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  • 1.
    Abdul Jabbar, Mashahel
    et al.
    Kristianstad University, School of Health and Society.
    Elshebani, Noor
    Kristianstad University, School of Health and Society.
    Metoder för tobaksavvänjning2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Patients with tobacco habits visit the dental care regularly, therefore it is well placed to carry out tobacco cessation for those who smoke or use snuff. The purpose of this study was to highlight methods available for tobacco cessation and results of these methods. The authors searched in the database PubMed and was limited to articles published during the last ten years and performed in the dental care. The framework was limited to eight studies which were performed in the dental care. The results showed that there are several different combination methods for tobacco cessation. In three articles, the 5A method was used in combination with nicotine replacement therapy. In other articles five different combination methods with different follow-up times were used. In one of those with

    combined approach two methods are described. In addition a method was used for snuff cessation. The result showed differences in frequency of success to tobacco stop. The best result was shown after twelve months tobacco cessation and a follow up in two of the combination methods and the method for snuff cessation (36%, 25% and 30%). The lowest success rate was 7% after twelve months follow up with one of the 5A methods. The conclusion of the study is that there are few published studies regarding tobacco cessation in the dental care, which are based on evaluation of methods performed among patients. Follow up, counselling and support have essential effects on the result.

  • 2.
    Abdullahi Ossoble, Rage
    Örebro University, School of Health Sciences.
    Use of and patient satisfaction with removable partial dentures and the impact on oral health related quality of life; a cross-sectional survey study2017Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Introduction: Removable partial dentures (PRD) are among the treatment options available for partially edentulous patients. The usage of RPD and patient satisfaction with the prosthesis relates to Oral health related quality of life (OHRQoL).

    Aim: The aim of this study was to evaluate the use of RPDs, satisfaction with the prostheses as well as OHRQoL in patients provided with a RPD in general practice. A further aim was to identify possible factors related to RPD usage, patient satisfaction and OHRQoL.

    Material and method: A cross-sectional survey study, utilizing a questionnaire regarding patient satisfaction with different aspects of the participants RPD, the Swedish version of OHIP-14 questionnaire and the usage of the prosthesis.

    Results: A majority of respondents, (83.6%) reported that they used their prosthesis daily or often. The overall satisfaction rate among respondents was 83.0% with 39.3% stating that they were highly satisfied with the prosthesis and the mean OHIP- 14 score was 8.5, SD 10.2. The chewing ability was reported to be improved by 58.9% but impairment in chewing was reported by 26.8%. Pain from supporting teeth and soft tissue, sociodemographic factors and dissatisfaction with pre-treatment information and personal treatment were associated with not using the RPD.

    Conclusions: In the present study, treatment with RPD was in most patients associated with improvement in chewing and appearance. Insufficient pretreatment information, perception of treatment and pain from supporting tissue was associated with reduced use of and satisfaction with the RPD.

  • 3.
    Aboulaich, Nabila
    Linköping University, Department of Clinical and Experimental Medicine, Cell Biology. Linköping University, Faculty of Health Sciences.
    Expanding role of caveolae in control of adipocyte metabolism: proteomics of caveolae2006Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The primary function of adipose tissue is to store energy in the form of triacylglycerol, which is hydrolyzed to fatty acids to supply other tissues with energy. While insulin promotes the storage of triacylglycerol, catecholamines stimulate its hydrolysis. The development of type II diabetes is strongly associated with obesity, indicating a role of triacylglycerol metabolism in the pathogenesis of diabetes. Caveolae are plasma membrane invaginations found in most cells but are highly abundant in adipocytes. Insulin receptors are localized in caveolae and their function depends on intact caveolae structures. In the present thesis work, mass spectrometry-based methodology allowed identification of a number of new proteins and their posttranslational modifications in caveolae of human adipocytes. Variable N-terminal acetylation and phosphorylation of caveolin-1α and caveolin-1β were identified, which might regulate the function of caveolae. The transcription regulator protein PTRF was identified as the major caveolae associated protein. Specific proteolytic modifications of PTRF at the cytosolic surface of caveolae and phosphorylation on nine serine and one threonine residues were identified. Moreover, insulin induced translocation of PTRF from the plasma membrane to the nucleus. PTRF was previously shown to regulate the activity of both RNA polymerase I and polymerase II, thus a role of PTRF in mediating the anabolic action of insulin on protein synthesis and gene transcription is proposed.

    PTRF was also involved in an extranuclear function in the hormonal regulation of triacylglycerol metabolism in caveolae. PTRF was colocalized with the triacylglycerol regulator proteins perilipin and hormone-sensitive lipase (HSL) in the triacylglycerol-synthesizing caveolae subclass. We showed that, while perilipin was translocated to the plasma membrane, both PTRF and HSL were translocated from the plasma membrane to the cytosol as a complex in response to insulin. The perilipin recruited to the plasma membrane was highly threonine phosphorylated. By mass spectrometry, three phosphorylated threonine residues were identified and were located in an acidic domain in the lipid droplet targeting domain of perilipin. The insulin-induced recruitment of perilipin to the plasma membrane might, therefore be phosphorylation-dependent. Isoproterenol, which stimulates hydrolysis of triacylglycerol, induced a complete depletion of perilipin B from the plasma membrane, suggesting a function of perilipin B to protect newly synthesized triacylglycerol in caveolae from being hydrolyzed by HSL. The location of PTRF and HSL was not affected by isoproterenol, indicating that insulin is acting against a default presence of PTRF and HSL in caveolae.

    Taken together, this thesis expands our knowledge about caveolae and provided valuable information about their involvement in novel roles, particularly in the hormonal regulation of triacylglycerol metabolism.

  • 4. Abrahamsson, Kajsa
    et al.
    Öhrn, Kerstin
    Dalarna University, School of Education, Health and Social Studies, Health and Caring Sciences/Oral Health Science.
    Hakeberg, Magnus
    Dental beliefs: factor structure of the revised dental beliefs survey in a group of regular dental patients2009In: European Journal of Oral Sciences, ISSN 0909-8836, E-ISSN 1600-0722, Vol. 117, no 6, 720-727 p.Article in journal (Refereed)
    Abstract [en]

    The aim of this study was to investigate the factor structure of the revised dental beliefs survey (DBS-R) in a group of regular dental patients. The study group consisted of 278 patients (mean age 54 yr), 61% of whom were women. The DBS-R item mean value was 1.6. Principal component analysis (PCA) and confirmatory factor analysis (CFA) were performed. The initial PCA among the 28 DBS-R items showed four factors with eigenvalues of > 1 explaining 67% of the total variance. Five different CFA models were tested. The final model revealed a four-factor solution with one second-order factor (i.e. a hierarchical CFA). Thus, the latent second-order variable, 'dental beliefs', explains the variance from all DBS-R items through the four first-order factors labeled 'ethics', 'belittlement', 'communication and empathy', and 'control and anxiety'. The results suggest a somewhat different factor structure of DBS-R than previously reported for dental-fear patients. Hence, the underlying factor structure of the DBS-R may differ between different patient groups. The results point towards the use of the original 28-item DBS-R and interpreting the scale as measuring an overall construct of 'dental beliefs' and thus patients' attitudes and feelings related to dentists and dentistry.

  • 5.
    Abtahi, Jahan
    et al.
    Linköping University, Department of Clinical and Experimental Medicine, Division of Clinical Sciences. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Anaesthetics, Operations and Specialty Surgery Center, Maxillofacial Unit.
    Henefalk, G.
    Region Östergötland, Anaesthetics, Operations and Specialty Surgery Center, Maxillofacial Unit.
    Aspenberg, Per
    Linköping University, Department of Clinical and Experimental Medicine, Division of Clinical Sciences. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center for Surgery, Orthopaedics and Cancer Treatment, Department of Orthopaedics in Linköping.
    Randomised trial of bisphosphonate-coated dental implants: Radiographic follow-up after five years of loading2016In: International Journal of Oral and Maxillofacial Surgery, ISSN 0901-5027, E-ISSN 1399-0020, Vol. 45, no 12, 1564-1569 p.Article in journal (Refereed)
    Abstract [en]

    The results of a randomised trial with bisphosphonate-coated dental implants have been reported previously. Each patient received one coated and one uncoated implant in a double-blind split-mouth design study. After 6 months of osseointegration, resonance frequency analysis indicated better fixation of the coated implants. Reduced marginal bone resorption was also shown. However, it was not known whether the advantage of the bisphosphonate coating would persist over time. The radiographic results at 5 years after implant installation are reported herein. A blinded investigator measured marginal resorption on fresh radiographs obtained for 14 of the 16 patients (two had died) and compared these with the post-implantation images. Non-parametric statistics were used. All implants functioned well. The median marginal bone loss for control implants was found to be 0.70 mm, which is less than usually reported in the literature. The bisphosphonate-coated implants showed even less resorption (median 0.20 mm). The median difference within each pair of implants after 5 years of use was 0.34 mm (95% confidence interval 0.00-0.75 mm; P = 0.04). The present data suggest that bisphosphonate-coated implants enable prolonged preservation of the marginal bone.

  • 6.
    Abushahba, Faleh
    et al.
    School of Dental Science, Trinity College, Dublin.
    Renvert, Stefan
    Kristianstad University, Department of Health Sciences.
    Polyzois, Ioannis
    School of Dental Science, Trinity College, Dublin.
    Claffey, Noel
    School of Dental Science, Trinity College, Dublin.
    Effect of grafting materials on osseointegration of dental implants surrounded by circumferential bone defects: an experimental study in the dog2008In: Clinical Oral Implants Research, ISSN 0905-7161, E-ISSN 1600-0501, Vol. 19, no 4, 329-334 p.Article in journal (Refereed)
    Abstract [en]

    AIMS: This study was designed to evaluate the effect of gap width and graft placement on bone healing around implants placed into simulated extraction sockets in the mandibles of four beagle dogs. MATERIALS AND METHODS: Four Ti-Unite implants (13 mm x 3.3 mm) were placed on each side of the mandible. Three implants were surrounded by a 1.35 mm circumferential and a 5 mm deep gap around the coronal portion of the implants. A fourth implant was inserted conventionally into both sides of the mandibles as a positive control. The gaps were filled with either Bio-Oss, autogenous bone or with a blood clot alone. The study design was balanced for animal, side and modality. Ground sections were prepared from biopsies taken at 3 months, and computer-aided histometric measurements of bone/implant contact and area of bone within threads were made for the coronal 5 mm. Data were analysed using analysis of variance. RESULTS: The mean bone/implant contact was 9.8 mm for the control and ranged from 9.3 to 11.3 mm for the three test modalities. The corresponding values for area within threads were 1 mm(2) and 1-1.2 mm(2). Modality had a significant effect on both bone/implant contact (F=16.9; P<0.0001) and area within threads (F=16.7; P<0.0001). CONCLUSION: The results of this study suggest that both autogenous bone graft and Bio-Oss played an important role in the amount of hard tissue fill and osseointegration occurring within marginal bone defects around implants.

  • 7.
    Adekunle, Kayode
    et al.
    University of Borås, School of Engineering.
    Åkesson, Dan
    University of Borås, School of Engineering.
    Skrifvars, Mikael
    University of Borås, School of Engineering.
    Biobased Composites Prepared by Compression Moulding using a Novel Thermoset Resin from Soybean oil and a Natural Fibre Reinforcement2009Conference paper (Other academic)
    Abstract [en]

    Biobased composites were manufactured by using a compression moulding technique. Novel thermoset resins from soybean oil were used as matrix while flax fibres were used as reinforcement. The airlaid fibres were stacked randomly while woven fabrics were stacked crosswisely (90°) and impregnation was done manually. The fibre/ resin ratio was 60% to 40%.

  • 8.
    Ademovski, S. Erovic
    et al.
    Kristianstad Univ, Sect Hlth & Soc, S-29188 Kristianstad, Sweden..
    Lingstrom, P.
    Univ Gothenburg, Sahlgrenska Acad, Inst Odontol, Dept Cariol, Gothenburg, Sweden..
    Renvert, Stefan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    The effect of different mouth rinse products on intra-oral halitosis2016In: International Journal of Dental Hygiene, ISSN 1601-5029, E-ISSN 1601-5037, Vol. 14, no 2, 117-123 p.Article in journal (Refereed)
    Abstract [en]

    Aim: To evaluate the effect of different mouth rinses 12 h after rinsing on genuine intra-oral halitosis. Materials and Methods: Twenty-four adults with halitosis were included in a double-blind, crossover, randomized clinical trial. Halitosis was evaluated 12 h after rinsing with placebo and five mouth rinse products containing zinc acetate and chlorhexidine diacetate; zinc lactate, chlorhexidine and cetylpyridinium chloride; zinc acetate and chlorhexidine diacetate with reduced amounts of mint and menthol; zinc chloride and essential oil; and chlorine dioxide using the organoleptic method and a gas chromatograph. Test periods were separated by 1 week. Results: Hydrogen sulphide (H2S), methyl mercaptan (MM) and the organoleptic scores (OLS) were significantly reduced 12 h following rinsing with all substances compared to placebo (P < 0.05). H2S was more effectively reduced after rinsing with zinc acetate and chlorhexidine diacetate and zinc acetate and chlorhexidine diacetate with reduced amounts of mint and menthol compared to rinsing with zinc chloride and essential oil (P < 0.05), and significantly lower values of MM were obtained after rinsing with zinc acetate and chlorhexidine diacetate compared to zinc lactate, chlorhexidine and cetylpyridinium chloride (P < 0.05). The percentage effectively treated individuals (H2S (<112 ppb), MM (<26 ppb) and OLS score <2) varied from 58% percentage (zinc acetate and chlorhexidine diacetate) to 26% (zinc chloride and essential oil). Conclusion: All treatments resulted in reduction in halitosis 12 h after rinsing compared to placebo. H2S and MM were most effectively reduced by zinc acetate and chlorhexidine diacetate.

  • 9.
    Ademovski, Seida Erovic
    et al.
    Kristianstad Univ, Sch Hlth & Soc, S-29188 Kristianstad, Sweden..
    Martensson, Carina
    Kristianstad Univ, Sch Hlth & Soc, S-29188 Kristianstad, Sweden..
    Persson, G. Rutger
    Kristianstad Univ, Sch Hlth & Soc, S-29188 Kristianstad, Sweden.;Univ Washington, Sch Dent, Dept Periodont, Seattle, WA 98195 USA..
    Renvert, Stefan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    The effect of periodontal therapy on intra-oral halitosis: a case series2016In: Journal of Clinical Periodontology, ISSN 0303-6979, E-ISSN 1600-051X, Vol. 43, no 5, 445-452 p.Article in journal (Refereed)
    Abstract [en]

    Aim: The aim of this study was to evaluate the effects of non-surgical periodontal therapy on intra-oral halitosis 3months after therapy. Material and methods: Sixty-eight adults with intra-oral halitosis were included in a case series. Intra-oral halitosis was evaluated at baseline, and at 3months after treatment using the organoleptic scores (OLS), Halimeter (R), and a gas chromatograph. Results: Significant reductions for OLS (p<0.01), total sum of volatile sulphur compounds (T-VSC) (p<0.01) and methyl mercaptan (MM) (p<0.05) values were found after treatment. Hydrogen sulphide (H2S) levels were not significantly reduced. The numbers of probing pockets 4mm, 5mm and 6mm were significantly reduced as a result of therapy (p<0.001). Bleeding on probing (BOP) and plaque indices were also significantly reduced (p<0.001). For the 34 individuals with successful periodontal treatment (BOP<20% and a 50% reduction of total pocket depth) reductions in OLS (p<0.01) and T-VSC scores (p<0.01) were found. Eleven individuals were considered effectively treated for intra-oral halitosis presenting with a T-VSC value <160ppb, a H2S value <112ppb and a MM value <26ppb. Conclusion: Non-surgical periodontal therapy resulted in reduction of OLS, MM and T-VSC values 3months after therapy. Few individuals were considered as effectively treated for intra-oral halitosis.

  • 10.
    Ademovski, Seida Erovic
    et al.
    Kristianstad University, School of Health and Society, Avdelningen för Oral hälsa och folkhälsovetenskap. Kristianstad University, Research environment Oral Health - Public Health - Quality of Life (OHAL).
    Mårtensson, Carina
    Kristianstad University, Research environment Oral Health - Public Health - Quality of Life (OHAL). Kristianstad University, School of Health and Society, Avdelningen för Oral hälsa och folkhälsovetenskap.
    Persson, G. Rutger
    Kristianstad University, School of Health and Society, Avdelningen för Oral hälsa och folkhälsovetenskap. Kristianstad University, Research environment Oral Health - Public Health - Quality of Life (OHAL).
    Renvert, Stefan
    Kristianstad University, School of Health and Society, Avdelningen för Oral hälsa och folkhälsovetenskap. Kristianstad University, Research environment Oral Health - Public Health - Quality of Life (OHAL).
    The effect of periodontal therapy on intra-oral halitosis: a case series2016In: Journal of Clinical Periodontology, ISSN 0303-6979, E-ISSN 1600-051X, Vol. 43, no 5, 445-452 p.Article in journal (Refereed)
    Abstract [en]

    Aim: The aim of this study was to evaluate the effects of non-surgical periodontal therapy on intra-oral halitosis 3months after therapy. Material and methods: Sixty-eight adults with intra-oral halitosis were included in a case series. Intra-oral halitosis was evaluated at baseline, and at 3months after treatment using the organoleptic scores (OLS), Halimeter (R), and a gas chromatograph. Results: Significant reductions for OLS (p<0.01), total sum of volatile sulphur compounds (T-VSC) (p<0.01) and methyl mercaptan (MM) (p<0.05) values were found after treatment. Hydrogen sulphide (H2S) levels were not significantly reduced. The numbers of probing pockets 4mm, 5mm and 6mm were significantly reduced as a result of therapy (p<0.001). Bleeding on probing (BOP) and plaque indices were also significantly reduced (p<0.001). For the 34 individuals with successful periodontal treatment (BOP<20% and a 50% reduction of total pocket depth) reductions in OLS (p<0.01) and T-VSC scores (p<0.01) were found. Eleven individuals were considered effectively treated for intra-oral halitosis presenting with a T-VSC value <160ppb, a H2S value <112ppb and a MM value <26ppb. Conclusion: Non-surgical periodontal therapy resulted in reduction of OLS, MM and T-VSC values 3months after therapy. Few individuals were considered as effectively treated for intra-oral halitosis.

  • 11. Adern, Bengt
    et al.
    Stenvinkel, Christer
    Sahlqvist, Lotta
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Centrum för klinisk forskning i Sörmland (CKFD).
    Tegelberg, Ake
    Prevalence of temporomandibular dysfunction and pain in adult general practice patients2014In: Acta Odontologica Scandinavica, ISSN 0001-6357, E-ISSN 1502-3850, Vol. 72, no 8, 585-590 p.Article in journal (Refereed)
    Abstract [en]

    Objective. To analyse the prevalence of temporomandibular disorders and related pain (TMD-pain) among adult recall patients in general dental practice. Materials and methods. From November 2006 to September 2008, all adults attending a Swedish Public Dental Service (PDS) clinic for recall examination were asked two standardized questions about temporomandibular pain and dysfunction. Mouth-opening capacity was measured. The responses to the questions and mouth-opening capacity were combined to give a TMD-pain score, on a scale of 0-3. The patients' acceptance of their TMD condition was also noted. Results. The subjects comprised 2837 adults (53% females, 47% men). Of the total sample, 4.9% reported a TMD-pain score of 1-3. The gender difference was significant: women predominated (p < 0.003). Forty-three per cent of those with TMD-pain scores of 1-3 (36% men, 47% women) considered that the condition warranted treatment, especially those registering a pain score (significant difference between pain and dysfunction groups, p < 0.000). Conclusions. The TMD-pain score shows promise as a useful instrument for detecting and recording TMD-pain. The prevalence of TMD disclosed in the study is high enough to be considered a public health concern. Most of the subjects with lower scores on the TMD-pain scale accepted their condition as not severe enough to require treatment.

  • 12.
    Adriaens, Laurence M
    et al.
    University of Bern, Bern, Switzerland.
    Alessandri, Regina
    University of Bern, Bern, Switzerland.
    Spörri, Stefan
    State Hospital of Fribourg, Fribourg, Switzerland.
    Lang, Niklaus P
    University of Bern, Bern, Switzerland.
    Persson, G. Rutger
    University of Bern, Bern, Switzerland & University of Washington.
    Does pregnancy have an impact on the subgingival microbiota?2009In: Journal of Periodontology, ISSN 0022-3492, Vol. 80, no 1, 72-81 p.Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: We investigated clinical and subgingival microbiologic changes during pregnancy in 20 consecutive pregnant women > or =18 years not receiving dental care.

    METHODS: Bacterial samples from weeks 12, 28, and 36 of pregnancy and at 4 to 6 weeks postpartum were processed for 37 species by checkerboard DNA-DNA hybridization. Clinical periodontal data were collected at week 12 and at 4 to 6 weeks postpartum, and bleeding on probing (BOP) was recorded at sites sampled at the four time points.

    RESULTS: The mean BOP at week 12 and postpartum was 40.1% +/- 18.2% and 27.4% +/- 12.5%, respectively. The corresponding mean BOP at microbiologic test sites was 15% (week 12) and 21% (postpartum; not statistically significant). Total bacterial counts decreased between week 12 and postpartum (P <0.01). Increased bacterial counts over time were found for Neisseria mucosa (P <0.001). Lower counts (P <0.001) were found for Capnocytophaga ochracea, Capnocytophaga sputigena, Eubacterium saburreum, Fusobacterium nucleatum naviforme, Fusobacterium nucleatum polymorphum, Leptotrichia buccalis, Parvimonas micra (previously Peptostreptococcus micros or Micromonas micros), Prevotella intermedia, Prevotella melaninogenica, Staphylococcus aureus, Streptococcus anginosus, Streptococcus intermedius, Streptococcus mutans, Streptococcus oralis, Streptococcus sanguinis, Selenomonas noxia, and Veillonella parvula. No changes occurred between weeks 12 and 28 of pregnancy. Counts of Aggregatibacter actinomycetemcomitans (previously Actinobacillus actinomycetemcomitans), Porphyromonas gingivalis, Tannerella forsythia (previously T. forsythensis), and Treponema denticola did not change. Counts of P. gingivalis and T. forsythia at week 12 were associated with gingivitis (P <0.001).

    CONCLUSIONS: Subgingival levels of bacteria associated with periodontitis did not change. P. gingivalis and T. forsythia counts were associated with BOP at week 12. A decrease was found in 17 of 37 species from week 12 to postpartum. Only counts of N. mucosa increased.

  • 13. Agdal, Maren Lillehaug
    et al.
    Raadal, Magne
    Öst, Lars-Göran
    Stockholm University, Faculty of Social Sciences, Department of Psychology.
    Skaret, Erik
    Quality-of-life before and after cognitive behavioral therapy (CBT) in patients with intra-oral injection phobia2012In: Acta Odontologica Scandinavica, ISSN 0001-6357, Vol. 70, no 6, 463-470 p.Article in journal (Refereed)
    Abstract [en]

    Objective. To evaluate quality-of-life (QoL), before and after cognitive behavioral therapy (CBT) in patients diagnosed with intra-oral injection phobia according to DSM-IV and to compare with the general population. This study also aimed to evaluate if QoL was associated with self-reported injection anxiety, dental anxiety, time since last dental treatment and oral health. Materials and methods. Subjects were 55 patients (mean age 35.5 +/- 12.2, 78.2% women) who participated in a treatment study in which 89% managed an intra-oral injection at 1 year follow-up. The patients completed a set of questionnaires including Quality of Life Inventory (QOLI), Injection Phobia Scale-Anxiety, Dental Anxiety Scale and a single-item question assessing self-perceived oral health. Objective measures of oral health and treatment needs were based on clinical examination. QOLI-scores from a non-clinical sample were used for comparison. Results. Before treatment the general and health specific QoL were lower among intra-oral injection phobics than in the non-clinical sample. At 1 year follow-up the QoL in general had improved significantly and was similar to that of the non-clinical sample. Poor self-reported oral health and long-term avoidance of dental treatment were associated with lower general and health-specific QoL. Self-reported injection anxiety and dental anxiety were not associated with QoL. Conclusions. Patients with intra-oral injection phobia report lower QoL compared with a general population. Phobia treatment seems to increase QoL to normative levels. Self-perceived poor oral health is associated with reduced QoL in these patients.

  • 14.
    Agerbaek, Mette R
    et al.
    University of Bern, Bern, Switzerland.
    Lang, Niklaus P
    University of Bern, Bern, Switzerland.
    Persson, G. Rutger
    University of Bern, Bern, Switzerland & University of Washington, Seattle, WA, USA.
    Comparisons of bacterial patterns present at implant and tooth sites in subjects on supportive periodontal therapy. I. Impact of clinical variables, gender and smoking.2006In: Clinical Oral Implants Research, ISSN 0905-7161, E-ISSN 1600-0501, Vol. 17, no 1, 18-24 p.Article in journal (Refereed)
    Abstract [en]

    OBJECTIVE: (I) To compare the oral microflora at implant and tooth sites in subjects participating in a periodontal recall program, (II) to test whether the microflora at implant and tooth sites differ as an effect of gingival bleeding (bleeding on probing (BOP)), or pocket probing depth (PPD), and (III) to test whether smoking and gender had an impact on the microflora.

    MATERIAL AND METHODS: Data were collected from 127 implants and all teeth in 56 subjects. Microbiological data were identified by the DNA-DNA checkerboard hybridization.

    RESULTS: PPD> or =4 mm were found in 16.9% of tooth, and at 26.6% of implant sites (P<0.01). Tooth sites with PPD> or =4 mm had a 3.1-fold higher bacterial load than implant sites (mean difference: 66%, 95% confidence interval (CI): 40.7-91.3, P<0.001). No differences were found for the red, orange, green, and yellow complexes. A higher total bacterial load was found at implant sites with PPD> or =4 mm (mean difference 35.7 x 10(5), 95% CI: 5.2 (10(5)) to 66.1 (10(5)), P<0.02 with equal variance not assumed). At implant sites, BOP had no impact on bacterial load but influenced the load at tooth sites (P<0.01).

    CONCLUSION: BOP, and smoking had no impact on bacteria at implant sites but influenced the bacterial load at tooth sites. Tooth sites harbored more bacteria than implant sites with comparable PPD. The 4 mm PPD cutoff level influenced the distribution and amounts of bacterial loads. The subject factor is explanatory to bacterial load at both tooth and implant sites.

  • 15. Agerbaek, Mette R
    et al.
    Lang, Niklaus P
    Persson, G. Rutger
    University of Bern, Bern, Switzerland & University of Washington, Seattle, WA, USA.
    Microbiological composition associated with interleukin-1 gene polymorphism in subjects undergoing supportive periodontal therapy.2006In: Journal of Periodontology, ISSN 0022-3492, Vol. 77, no 8, 1397-1402 p.Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Interleukin-1 gene polymorphism (IL-1 gene) has been associated with periodontitis. The present study examined the subgingival microbiota by IL-1 gene status in subjects undergoing supportive periodontal therapy (SPT).

    METHODS: A total of 151 subjects with known IL-1 gene status (IL-1A +4845/IL-1B -3954) (IL-1 gene) were included in this study. Clinical data and subgingival plaque samples (40 taxa) were collected. These taxa were determined by the checkerboard DNA-DNA hybridization method.

    RESULTS: Gender, smoking habits (n-par tests), age, and clinical periodontal conditions did not differ by IL-1 gene status. IL-1 gene-negative subjects had a higher total bacterial load (mean difference, 480.4 x 10(5); 95% confidence interval [CI], 77 to 884 x 10(5); P <0.02). The levels of Actinobacillus actinomycetemcomitans (mean difference, 30.7 x 10(5); 95% CI, 2.2 to 59.5 x 10(5); P <0.05), Eubacterium nodatum (mean difference, 4.2 x 10(5); 95% CI, 0.6 to 7.8 x 10(5); P <0.02), Porphyromonas gingivalis (mean difference, 17.9 x 10(5); 95% CI, 1.2 to 34.5 x 10(5); P <0.05), and Streptococcus anginosus (mean difference, 4.0 x 10(5); 95% CI, 0.2 to 7.2 x 10(5); P <0.05) were higher in IL-1 gene-negative subjects, an observation specifically found at sites with probing depths <5.0 mm.

    CONCLUSIONS: Bleeding on probing did not differ by IL gene status, reflecting clinical SPT efficacy. IL-1 gene-negative subjects had higher levels of periodontal pathogens. This may suggest that among subjects undergoing SPT, a lower bacterial load is required in IL-1 gene-positive subjects to develop the same level of periodontitis as in IL-1 gene-negative subjects.

  • 16.
    Aghazadeh, Ahmad
    et al.
    Uppsala Käkkirurgiska Centrum.
    Persson, G. Rutger
    Kristianstad University, School of Health and Society.
    Renvert, Stefan
    Kristianstad University, School of Health and Society.
    A single-center randomized controlled clinical trial on the adjunct treatment of intra-bony defects with autogenous bone or a xenograft: results after 12 months2012In: Journal of Clinical Periodontology, ISSN 0303-6979, E-ISSN 1600-051X, Vol. 39, no 7, 666-673 p.Article in journal (Refereed)
    Abstract [en]

    Background Limited evidence exists on the efficacy of regenerative treatment of peri-implantitis Materials and methods Subjects receiving antibiotics and surgical debridement were randomly assigned to placement of autogenous bone (AB) or bovine derived xenograft (BDX) with placement of a collagen membrane. The primary outcome was: evidence of radiographic bone fill and the secondary outcomes included reductions of probing depth (PD) bleeding on probing (BOP) and suppuration. Results 22 subjects were included in the AB and 23 subjects in the BDX group. Statistical analysis failed to demonstrate differences for 38/39 variables assessed at baseline. At 12 months, significant better results were obtained in the BDX group for bone levels (p < 0.001), BOP (p = 0.004), PI (p = 0.003), and suppuration (p < 0.01). When adjusting for number of implants treated per subject, a successful treatment outcome PD≤ 5.0 mm, no pus, no bone loss and BOP at 1/4 sites the likelihood of defect fill was higher in the BDX group (LR: 3.2, 95 % CI: 1.0 to 10.6, p < 0.05). Conclusions Bovine xenograft provided more radiographic bone fill than autogenous bone. The success for both surgical regenerative procedures was limited. Decreases in PD, BOP, and suppuration were observed.

  • 17. Ahlgren, Camilla
    et al.
    Molin, Margareta
    Umeå University, Faculty of Medicine, Odontology, Prosthetic Dentistry. Umeå University, Faculty of Medicine, Odontology.
    Lundh, Thomas
    Nilner, Krister
    Levels of gold in plasma after dental gold inlay insertion.2007In: Acta odontologica Scandinavica, ISSN 1502-3850, Vol. 65, no 6, 331-4 p.Article in journal (Refereed)
    Abstract [en]

    OBJECTIVE: Several studies have reported increased levels of gold (Au) in the blood of patients with dental gold restorations. This study analyzed gold levels in blood plasma before dental gold inlay insertion, 0-12 months after, and 15 years after. MATERIAL AND METHODS: Plasma samples from 9 patients were taken before and 0-10 months after gold inlay insertion. Fifteen years after gold inlay insertion, further blood samples taken from 8 of these patients were analyzed for gold using inductively coupled plasma mass spectrometry. An oral examination was also carried out before and 15 years after gold inlay insertion. RESULTS: Gold levels in plasma were significantly higher 0-12 months after gold inlay insertion than before treatment (p=0.008). No significant difference in gold plasma levels was found between 0-12 months after and 15 years after insertion (p=0.109), although there was a significant correlation between the number of gold alloy surfaces and the amount of gold in plasma 15 years after insertion (p=0.028). CONCLUSIONS: This study supports a dose-related release of gold into plasma from dental gold restorations, a release that appears to be stable over time.

  • 18.
    Ahlman, Helena
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Tandvårdspersonals engagemang i kliniskt arbete med hemlösa: En kvalitativ studie2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Introduktion: Hemlösa har ett stort tandvårdsbehov och behöver engagerad tandvårdspersonal som är beredda att arbeta kliniskt med denna grupp. Syfte: Syftet är att studera vad som engagerar tandvårdspersonal till att arbeta med hemlösa. Metod: En kvalitativ studie och kvalitativ innehållsanalys har använts. Urval: Studien baseras på intervjuer med en tandläkare och en tandsköterska. Resultat: Resultatet presenteras i två domäner. Domänen Fängslande speglar vad informanterna upplever spännande i kliniskt arbete med hemlösa. Tre kategorier finns under denna, Intresse, Ovillighet bland kollegor och Team-work. Under domänen Medkänsla finns två kategorier Nytta och Välvilja. Där speglas känslor som informanterna upplevde i arbetet med denna grupp. Kategorierna visar vad som engagerar informanterna i deras kliniska arbete med hemlösa. Konklusion: Känslorna som tandvårdspersonalen erhåller vid det kliniska arbetet med hemlösa utgör en grund för det engagemang som personalen känner för arbetet. Dock är det flera faktorer som samverkar till detta engagemang.

  • 19.
    Ahlqvist, Jan B
    et al.
    Umeå University, Faculty of Medicine, Department of Odontology.
    Nilsson, Tore A
    Umeå University, Faculty of Medicine, Department of Odontology.
    Hedman, Leif R
    Umeå University, Faculty of Social Sciences, Department of Psychology.
    Desser, Terry S
    Dev, Parvati
    Johansson, Magnus
    Umeå University, Faculty of Medicine, Department of Odontology.
    Youngblood, Patricia L
    Cheng, Robert P
    Gold, Garry E
    A randomized controlled trial on 2 simulation-based training methods in radiology: effects on radiologic technology student skill in assessing image quality.2013In: Simulation in Healthcare: The Journal of the Society for Simulation in Healthcare, ISSN 1559-2332, Vol. 8, no 6, 382-387 p.Article in journal (Refereed)
    Abstract [en]

    INTRODUCTION: A simulator for virtual radiographic examinations was developed. In the virtual environment, the user can perform and analyze radiographic examinations of patient models without the use of ionizing radiation. We investigated if this simulation technique could improve education of radiology technology students. We compared student performance in the assessment of radiographic image quality after training with a conventional manikin or with the virtual radiography simulator.

    METHODS: A randomized controlled experimental study involving 31 first-year radiology technology students was performed. It was organized in 4 phases as follows: (I) randomization to control or experimental group based on the results of an anatomy examination; (II) proficiency testing before training; (III) intervention (control group, exposure and analysis of radiographic images of the cervical spine of a manikin; experimental group, exposure and analysis of the cervical spine images in the virtual radiography simulator); and (IV) proficiency testing after training.

    RESULTS: The experimental group showed significantly higher scores after training compared with those before training (P < 0.01). A linear mixed-effect analysis revealed a significant difference between the control and experimental groups regarding proficiency change (P = 0.01).

    CONCLUSIONS: Virtual radiographic simulation is an effective tool for learning image quality assessment. Simulation can therefore be a valuable adjunct to traditional educational methods and reduce exposure to x-rays and tutoring time.

  • 20.
    Ahlqvist, Jan, Birger
    et al.
    Umeå University, Faculty of Medicine, Department of Odontology.
    Borg, Kennet
    Gunne, Johan
    Nilson, Hans
    Olsson, Morgan
    Åstrand, Per
    Osseointegrated implants in edentulous jaws: a 2-year longitudinal study.1990In: International Journal of Oral & Maxillofacial Implants, ISSN 0882-2786, E-ISSN 1942-4434, Vol. 5, no 2, 155-163 p.Article in journal (Refereed)
    Abstract [en]

    Osseointegrated implants in 50 edentulous jaws were studied during a 2-year observation period. The implant survival rate was 89% in the maxillae and 97% in the mandibles. The marginal bone loss averaged 1.7 mm in the maxillae and 1.1 mm in the mandibles. Most of this bone loss occurred during the first year. The bone loss was greater in jaws with a preoperatively minor resorption of the alveolar ridge than in those with moderate or advanced resorption. The bone loss was also greater at the medially positioned implants than at those more posterior.

  • 21. Ahlqvist, Jan
    et al.
    Eliasson, S
    Welander, U
    The effect of projection errors on cephalometric length measurements1986In: European Journal of Orthodontics, ISSN 0141-5387, E-ISSN 1460-2210, Vol. 8, no 3, 141-148 p.Article in journal (Refereed)
    Abstract [en]

    The magnitude of projection errors, calculated theoretically on length measurements in cephalometry was studied. Rotation of the object by up to 5° from the proper position, resulted in errors in length measurements that were usually less than one percent. Rotations of more than 5° may increase the error but imply misalignments of the head that should be evident when positioning the patient. The advantage of extremely long focus film distances seems doubtful.

  • 22.
    Aili, Margareta
    Umeå University, Faculty of Medicine, Molecular Biology.
    Role of YopE and LcrH in effector translocation, HeLa cell cytotoxicity and virulence2005Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    In order to establish an extra-cellular infection the gram-negative bacteria Yersinia pseudotuberculosis uses a type III secretion system (T3SS) to translocate a set of anti-host effectors into eukaryotic cells. The toxins disrupt signalling pathways important for phagocytosis, cytokine production and cell survival. Secretion and translocation via this T3SS is strictly regulated on several levels. In this context, the function of YopE and LcrH during Yersinia infections has been analysed.

    YopE is an essential translocated effector that disrupts the actin cytoskeleton of infected eukaryotic cells, by inactivating small GTPases through its GTPase activating protein (GAP) activity. However, cytotoxicity can be uncoupled from in vitro GAP activity towards the RhoA, Rac1 and Cdc42 GTPases. Furthermore, in vivo studies of the YopE GAP activity revealed that only RhoA and Rac1 are targeted, but this is not a pre-requisite for Yersinia virulence. Hence, YopE must target one or more additional GTPases to cause disease in mice.

    YopE was the only Yersinia effector that blocks LDH release from infected cells. Moreover, translocated YopE could regulate the level of subsequent effector translocation by a mechanism that involved the YopE GAP function and another T3S component, YopK. Loss of translocation control elevated total T3S gene expression in the presence of eukaryotic cells. This indicated the existence of a regulatory loop for feedback control of T3S gene expression in the bacteria that originates from the interior of the eukaryotic cell after effector translocation is completed. This might represent the true virulence function of YopE.

    Exoenzyme S (ExoS) of Pseudomonas aeruginosa has a YopE-like GAP domain with similar activity towards RhoA, Rac1 and Cdc42. However, ExoS is unable to complement hyper-translocation resulting from loss of YopE. This indicates a unique function for YopE in translocation control in Yersinia that might be dependent on correct intracellular localisation. It follows that the Membrane Localisation Domain in YopE was important for translocation control, but dispensable for cytotoxicity and blockage of LDH release.

    YopD and its cognate chaperone LcrH are negative regulatory elements of the T3S regulon and together with YopB, are involved in the effector translocation process. Randomly generated point mutants in LcrH specifically effected stability and secretion of both the YopB and YopD substrates in vitro and prevented their apparent insertion as translocon pores in the membranes of infected cells. Yet, these mutants still produced stable substrates in the presence of eukaryotic cells and most could mediate at least partial effector translocation. Thus, only minimal amounts of the YopB and YopD translocator proteins are needed for translocation and the LcrH chaperone may regulate this process from inside the bacteria.

  • 23. Akimoto, K
    et al.
    Becker, W
    Persson, G. Rutger
    University of Washington, Seattle, Washington.
    Baker, D A
    Rohrer, M D
    O'Neal, R B
    Evaluation of titanium implants placed into simulated extraction sockets: a study in dogs1999In: International Journal of Oral & Maxillofacial Implants, ISSN 0882-2786, Vol. 14, no 3, 351-360 p.Article in journal (Refereed)
    Abstract [en]

    The purpose of this study was to evaluate the effect of gap width on bone healing around implants placed into simulated extraction socket defects of varying widths in 10 mongrel dogs. All premolars were removed and the alveolar ridges were reduced to a width of 7 mm. Nine weeks later, a total of 80 implants, 10 mm long by 3.3 mm wide, were placed into osteotomy sites prepared to 3 different diameters in the coronal half, simulating extraction sockets. Three experimental sites, with gap sizes of 0.5 mm, 1.0 mm, and 1.4 mm, were created; the control sites had no gap. The depth of each defect was measured at the time of implant placement. All implants were stable at the time of placement. The dogs were euthanized 12 weeks after implant placement, and blocks containing the implants and adjacent bone were submitted for histologic evaluation. Clinically, all control and test sites healed, with complete bone fill in the defect. Percentages of bone-to-implant contact were measured histologically. As the gap widened, the amount of bone-to-implant contact decreased, and the point of the highest bone-to-implant contact shifted apically. These changes were statistically significant (P < .001). No statistically significant differences in bone-to-implant contact were found between the sites when the apical 4 mm of implants were compared. Within the limits of this study, the simulated extraction socket defects healed clinically, with complete bone fill, regardless of the initial gap size. However, the width of the gap at the time of implant placement had a significant impact on the histologic percentage and the height of bone-to-implant contact.

  • 24.
    Albertsson, Katarina Wikén
    et al.
    Umeå University, Faculty of Medicine, Department of Odontology.
    van Dijken, Jan W V
    Umeå University, Faculty of Medicine, Department of Odontology.
    Awareness of toothbrushing and dentifrice habits in regularly dental care receiving adults2010In: Swedish Dental Journal, ISSN 0347-9994, Vol. 34, no 2, 71-78 p.Article in journal (Refereed)
    Abstract [en]

    The aim of this study was to investigate toothbrushing and dentifrice habits in a Swedish adult population with relatively high caries frequency, which received regularly dental care and to evaluate the awareness of their toothbrush technique. Sixty adult participants with high caries frequency, 29 woman and 31 men, answered a self-reporting questionnaire with 42 questions concerning their oral care, brushing technique and -habits.The responses were related to their clinical behaviour observed during a customary toothbrushing session. Fifty-three participants fulfilled both the questionnaire and the clinical observation. Half of these used toothpaste containing 1450-1500 ppm fluoride but only one of all participants was aware of the fluoride concentration used. The majority used a manual toothbrush and 95% brushed their teeth twice a day using 0.9 g toothpaste. A wide range of brushing methods and habits was observed. Sixty percent did not brush systematically. Spitting of toothpaste-saliva during brushing was performed by 60% and after brushing by 15%.The observed brushing times were significantly higher than the self reported. The observed brushing times were <1 min: 3.4%, 1-2 min: 36.7% and >2 min: 47.0%. There was a significant correlation between observed brushing time and caries activity. Rinsing with water after brushing was performed once (32%) or twice (44%) during the observations. Only 9% rinsed with toothpaste slurry after brushing. It can be concluded that the awareness of the individual toothbrushing, post-brushing behaviour and the use of fluoride toothpaste was non-optimal in the adult participants. Oral health promotion by optimalized use of fluoride toothpaste and improved post-brushing behaviour should be recommended.

  • 25. Aldasoki, Hanin
    et al.
    Jasseh, Awa
    Nyutexaminerade tandhygienisters upplevelse av introduktionsprogram2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 26. Alghadir, Ahmad
    et al.
    Aly, Farag
    Zafar, Hamayun
    Umeå University, Faculty of Medicine, Department of Odontology, Clinical Oral Physiology.
    Effect of face veil on ventilatory function among Saudi adult females2012In: Pakistan journal of medical sciences print, ISSN 1682-024X, Vol. 28, no 1, 71-74 p.Article in journal (Refereed)
    Abstract [en]

    Objective: The use of face veil called "niqab" by women to cover their faces at public places is a common practice in some Muslim communities. The long-term effect of niqab use on ventilatory function (VF) has not previously been reported. The aim of this cross-sectional study was to compare VF between niqab wearing and non-niqab wearing healthy Saudi females. Methodology: Thirty eight healthy adult Saudi females participated in this study. Nineteen subjects were regular niqab users and the other nineteen were either not using niqab at all or used it for less than one hour per day. Forced vital capacity (FVC), forced expiratory volume in one second (FEV1), FEV1/FVC (%), and maximal voluntary ventilation (MVV) were recorded using a digital spirometer. Results: Mean values of FVC, FEV1, FEV1/FVC (%) and MVV for niqab wearers were significantly lower than the corresponding values for non-niqab wearers. Significant negative correlation was found between the FVC and FEV1 values and the number of hours of the use of face veil per day. Conclusions: Long-term use of traditional niqab use can affect VF.

  • 27. Alghadir, Ahmad H.
    et al.
    Zafar, Hamayun
    Umeå University, Faculty of Medicine, Department of Odontology.
    Iqbal, Zaheen A.
    Effect of three different jaw positions on postural stability during standing2015In: Functional Neurology, ISSN 0393-5264, E-ISSN 1971-3274, Vol. 30, no 1, 53-57 p.Article in journal (Refereed)
    Abstract [en]

    Studies in the literature show that jaw and neck regions are linked anatomically, biomechanically and neurologically. Voluntary clenching has been shown to improve muscle strength and performance of various motor tasks. Information from the neck sensory-motor system is reported to be important for posture. Hence it is reasonable to believe that activation of the jaw sensory-motor system has the potential to modulate posture. In a sample of 116 healthy subjects, we compared center of gravity (COG) velocity during quiet standing on a foam surface during three test positions: i) resting jaw, ii) open jaw, and iii) clenching; these were tested in two conditions: with eyes open and with eyes closed. The COG velocity decreased significantly during clenching in comparison to both open and resting jaw positions (p<0.0001). This suggests that the jaw sensory-motor system can modulate postural mechanisms. We conclude that jaw clenching can enhance postural stability during standing on an unstable surface in both the presence and absence of visual input in healthy adults and suggest that this should be taken into consideration in treatment and rehabilitation planning for patients with postural instability.

  • 28. Alghadir, Ahmad H.
    et al.
    Zafar, Hamayun
    Umeå University, Faculty of Medicine, Department of Odontology. Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh.
    Iqbal, Zaheen A.
    Effect of tongue position on postural stability during quiet standing in healthy young males2015In: Somatosensory & motor research, ISSN 0899-0220, E-ISSN 1369-1651, Vol. 32, no 3, 183-186 p.Article in journal (Refereed)
    Abstract [en]

    Background and aims: Role of the neck and jaw sensory motor system in control of body balance has been established. Tongue is an integral part of jaw sensory motor system and helps in execution of purposeful and precise motor tasks like eating, drinking and speaking. The purpose of this study was to evaluate the possible effects of tongue position on the postural control system. Materials and method: We compared the mean center of gravity (COG) velocity during quiet standing on an unstable surface with eyes closed during two test conditions: (i) with habitual jaw resting position and (ii) with instructed tongue positioned against the upper incisors. One hundred and sixteen normal healthy male subjects (average age 31.56 +/- 8.51 years and height 170.86 +/- 7.26 cm) participated in the study. Their COG velocity (deg/s) was measured using the NeuroCom (R) Balance Master version 8.5.0 (Clackamas, OR, USA). Results and conclusions: The results show that COG velocity decreased significantly while tongue was positioned against upper incisors in comparison to the habitual jaw resting position. Our findings suggest that the tongue positioning can modulate postural control mechanisms. Tongue positioning against the upper incisors can enhance the postural stability during upright standing on an unstable surface and in the absence of vision in healthy young adults. Our findings can be of value for evaluation and rehabilitation protocols for postural control dysfunction.

  • 29. Alghadir, Ahmad
    et al.
    Zafar, Hamayun
    Umeå University, Faculty of Medicine, Department of Odontology. King Saud Univ, Coll Appl Med Sci, Rehabil Res Chair, Riyadh, Saudi Arabia.
    Iqbal, Zaheen A.
    Al-Eisa, Einas
    Work-Related Low Back Pain Among Physical Therapists in Riyadh, Saudi Arabia2017In: Workplace Health & Safety, ISSN 2165-0799, Vol. 65, no 8, 337-345 p.Article in journal (Refereed)
    Abstract [en]

    Low back pain (LBP) is a common health problem. Professions like physical therapy (PT), involving frequent lifting, bending, or standing, are at risk for developing LBP. The objective of this study was to determine the prevalence of work-related LBP and factors associated with and consequences of work-related LBP among physical therapists in Riyadh, Saudi Arabia. A self-administered online questionnaire (i.e., demographic data, history of LBP before and after working as a physical therapist, work setting, and effect on daily activities) was sent to 600 members of the Saudi PT association. Data were analyzed using the Pearson chi-square test and Mann-Whitney U test. Eighty-eight percent of potential respondents completed the questionnaire. Of these, 89.65% of the therapists reported LBP after beginning their PT practice, and 35.6% reported LBP at the time of this survey. Gender, PT specialty, and duration of contact with patients were all found to be related to LBP. The prevalence of work-related LBP among physical therapist in Riyadh was high, affecting patient care and daily activities of the therapists. Both primary and secondary prevention strategies (e.g., introduce ergonomics into PT curricula, reduce therapist stress, and promote teamwork) are needed to decrease LBP among therapists, so they can effectively care for patients.

  • 30. Alghadir, Ahmad
    et al.
    Zafar, Hamayun
    Umeå University, Faculty of Medicine, Department of Odontology. Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
    Whitney, S. L.
    Iqbal, Zaheen
    Effect of chewing on postural stability during quiet standing in healthy young males2015In: Somatosensory & motor research, ISSN 0899-0220, E-ISSN 1369-1651, Vol. 32, no 2, 72-76 p.Article in journal (Refereed)
    Abstract [en]

    Background and aims: There is an important role of the neck sensory motor system in control of body posture and balance, and it is reasonable to believe that the jaw sensory motor system can directly and indirectly influence the modulation of the postural control system. The purpose of this study was to evaluate possible effects of dynamic jaw position while chewing on the postural control system. Materials and methods: We compared the mean center of gravity (COG) velocity during quite standing on a foam surface with eyes closed during three test conditions: (i) with resting jaw position, (ii) with open jaw position, and (iii) while chewing standard bolus of chewing gum. One hundred and sixteen normal healthy male subjects (average age 31.56 +/- 8.51 years; height 170.86 +/- 7.26 cm) were recruited for the study. Their COG velocity (deg/s) was measured using the NeuroCom (R) Balance Master Version 8.5.0 (Clackamas, OR, USA). Statistical analysis: Data was tested by the Friedman test. Results and conclusions. The results show that COG velocity decreased significantly while chewing in comparison to both open and resting jaw position (p < 0.0001). Our finding corroborates previous studies and suggests that the jaw sensory motor system can modulate postural control mechanisms. Gum chewing activity can enhance the postural stability during upright standing on an unstable surface and in the absence of visual input in healthy young adults. Our results should be taken into consideration in treatment and rehabilitation planning for patients with postural instability.

  • 31.
    Alhag, Mohamed
    et al.
    School of Dental Science, Trinity College, Dublin.
    Renvert, Stefan
    Kristianstad University, Department of Health Sciences.
    Polyzois, Ioannis
    School of Dental Science, Trinity College, Dublin.
    Claffey, Noel
    School of Dental Science, Trinity College, Dublin.
    Re-osseointegration on rough implant surfaces previously coated with bacterial biofilm: an experimental study in the dog2008In: Clinical Oral Implants Research, ISSN 0905-7161, E-ISSN 1600-0501, Vol. 19, no 2, 182-7 p.Article in journal (Refereed)
    Abstract [en]

    OBJECTIVE: The purpose of the study was to investigate whether osseointegration can occur on rough implant surfaces that previously had been coated with bacterial biofilm. MATERIALS AND METHODS: The premolars on both sides of the mandible in four beagle dogs were extracted. Following 3 months healing, three titanium implants Ti-Unite, Nobel Biocare were partially inserted in the left side of each mandible. Some threads protruded from the tissues into the oral cavity. Plaque accumulated on the exposed part of the implant. Following a 5-week healing period, the contaminated parts of each implant were treated using three different techniques: (1) swabbing with citric acid for 30 s followed by rinsing with physiological saline, (2) cleansing with a toothbrush and physiological saline for 1 min, and (3) swabbing with 10% hydrogen peroxide for 1 min followed by rinsing with physiological saline. The treated implants and one pristine implant (control) were installed to the full implant length on the contralateral sides of the mandibles. Following 11 weeks of healing, the dogs were sacrificed and biopsies were obtained. Ground sections were prepared for histomorphometric analysis. RESULTS: All treatment modalities were associated with direct bone-to-implant contact on the portion of implant surface previously exposed to the oral environment. CONCLUSIONS: The results demonstrate that rough surfaces, which were plaque contaminated and cleaned by different methods, can re-osseointegrate.

  • 32.
    Alm, A.
    et al.
    Kärnsjukhuset, Specialistklinken Pedodonti, Dept Paediat Dent, SE-54185 Skövde, Sweden.
    Wendt, Lill-Kari
    Jönköping University, School of Health Science, HHJ. Oral health.
    Koch, G.
    Inst Postgrad Dent Educ, Dept Paediat Dent, Jönköping, Sweden.
    Birkhed, D.
    Gothenburg Univ, Dept Cardiol, Sahlgrenska Acad, Gothenburg, Sweden.
    Nilsson, M.
    Cty Hosp, Futurum Acad Healthcare, Jönköping, Sweden.
    Caries in adolescence - influence from early childhood2012In: Community Dentistry and Oral Epidemiology, ISSN 0301-5661, E-ISSN 1600-0528, Vol. 40, no 2, 125-133 p.Article in journal (Refereed)
    Abstract [en]

    Objective: To analyse the relationship between caries determinants in early childhood and caries prevalence in proximal surfaces in adolescents at the age of 15 years. Methods: The present longitudinal study is part of a series of surveys of oral health in 671 children followed from 1 to 15 years of age. Data were selected from examinations, interviews and questionnaires at 1, 3 and 6 years and bitewing radiographs at 15 years of age. Uni- and multivariable logistic regression analyses were performed to identify caries-related determinants. The outcome variable was carious lesions and fillings (DFa) in approximal tooth surfaces at 15 years of age. Statistical comparisons were made between caries-free teenagers, DFa = 0 and teenagers with DFa > 0, DFa 4 and DFa 8, respectively. Results: In the final logistic regression analyses, caries experience at 6 years and mother's self-estimation of her oral health care as being less good to poor remained statistically significant and were related to caries in all three caries groups (i.e. DF > 0, 4 and 8) at 15 years of age. The consumption of sweets at 1 year remained statistically significant, with a caries experience of DF 4 and 8. The variables 'parents born abroad' and female gender were statistically significantly associated with DFa 4 and DFa 8, respectively. Furthermore, infrequent toothbrushing habits at 3 years of age and failure to attend the examination at 1 year were statistically significantly associated with caries at 15 years in the univariable analyses. Conclusion: Early caries experience, consumption of sweets at an early age and mother's self-estimation of her oral health care as being less good to poor are associated with approximal caries in adolescents. The study indicates that caries determinants identified during early childhood have a strong impact on approximal caries in adolescence.

  • 33. Alm, Anita
    et al.
    Fåhraeus, Christina
    Wendt, Lill-Kari
    Jönköping University, School of Health Science, HHJ. Oral health.
    Koch, Göran
    Andersson-Gäre, Boel
    Jönköping University, School of Health Science, HHJ, Quality Improvement and Leadership in Health and Welfare.
    Birkhed, Dowen
    Body adiposity status in teenagers and snacking habits in early childhood in relation to approximal caries at 15 years of age2008In: International Journal of Paediatric Dentistry, ISSN 0960-7439, E-ISSN 1365-263X, Vol. 18, no 3, 189-196 p.Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: The prevalence of overweight and obesity in children is steadily increasing in many countries. Dental caries and obesity are both multifactorial diseases and are associated with dietary habits.

    OBJECTIVE: The purpose of this study was to investigate the relationship between body weight status in adolescents and snacking habits in early childhood to approximal caries prevalence at 15 years of age.

    METHODS: This study is part of a series of surveys of oral health in children followed from the ages of 1 year to 15 years. Body adiposity status was estimated at 13.5-16.4 years using the International Obesity Task Force cut-off values [age-specific body mass index (isoBMI)]. Information about snacking habits in early childhood was collected from interviews conducted at 1 year and 3 years. Approximal caries information was obtained from bitewing radiographs at 15 years. Data related to isoBMI and approximal caries were available in 402 teenagers.

    RESULT: Adolescents with isoBMI > or = 25 (n = 64) had an approximal caries prevalence that was a mean of 1.6 times higher than those with isoBMI < 25 (n = 338) (4.64 vs. 2.94; P = 0.014). Furthermore, children's snacking habits at an early age were associated with approximal caries at 15 years.

    CONCLUSION: Overweight and obese adolescents had more approximal caries than normal-weight individuals. Moreover, the frequent consumption of snacking products during early childhood appears to be a risk indicator for caries at 15 years. Future preventive programmes should therefore include, on a multidisciplinary level, strategies to prevent and reduce both obesity and dental caries at an early age.

  • 34. Alm, Anita
    et al.
    Isaksson, Helen
    Fåhraeus, Christina
    Jönköping University, School of Health Science, HHJ. Oral health.
    Koch, Göran
    Andersson-Gäre, Boel
    Jönköping University, School of Health Science, HHJ. Quality improvements, innovations and leadership in health care and social work. Jönköping University, The Jönköping Academy for Improvement of Health and Welfare.
    Nilsson, Mats
    Birkhed, Dowen
    Wendt, Lill-Kari
    Jönköping University, School of Health Science, HHJ. Oral health.
    BMI status in Swedish children and young adults in relation to caries prevalence: BMI and caries prevalence2011In: Swedish Dental Journal, ISSN 0347-9994, Vol. 35, no 1, 1-8 p.Article in journal (Refereed)
    Abstract [en]

    Overweight and obesity are increasing as health problems at global level. Dental caries and obesity are both multifactorial diseases and are associated with dietary habits. The aim of the present study was to investigate the relationship between body weight status and caries prevalence in an unselected population followed from pre-school years to young adulthood. The present investigation was designed as a longitudinal analysis of the association between overweight/obesity and dental caries in one population at 3, 6, 15 and 20 years of age. The result shows that adolescents (15 years) and young adults (20 years) who are overweight/obese had a statistically significantly higher caries prevalence than normal-weight young people. At 6 years of age, the odds (OR) of having caries among obese children are 2.5 times higher than the odds for caries among six-year-old children of normal weight (p = 0.04). At 3 years of age, no association between overweight/obesity and caries was found. To conclude, overweight and obese adolescents and young adults had more caries than normal-weight individuals. The present study emphasises the need for multidisciplinary approaches to change the lifestyle factors causing both overweight/obesity and dental caries.

  • 35.
    Al-Taai, Nameer
    et al.
    Umeå University, Faculty of Medicine, Department of Odontology.
    Alfatlawi, Fakhri
    Univ Baghdad, Coll Dent, Dept Orthodont, Baghdad, Iraq.
    Ransjö, Maria
    Univ Gothenburg, Sahlgrenska Acad, Dept Orthodont, Gothenburg, Sweden.
    Fakhry, Saad
    Univ Al Nahrain, Coll Med, Dept Endocrinol & Metab, Baghdad, Iraq.
    Effect of rapid maxillary expansion on monosymptomatic primary nocturnal enuresis2015In: Angle orthodontist, ISSN 0003-3219, Vol. 85, no 1, 102-108 p.Article in journal (Refereed)
    Abstract [en]

    Objective: To evaluate the effects of rapid maxillary expansion (RME) on nocturnal enuresis (NE) related to the nasal airway, nasal breathing, and plasma osmolality (as an indicator for antidiuretic hormone). Materials and Methods: Nineteen patients with monosymptomatic primary NE, aged 6-15 years, were treated with RME for 10-15 days. To exclude a placebo effect of the RME appliance, seven patients were first treated with a passive appliance. Computed tomography of nasal cavity, rhinomanometric, and plasma osmolality measurements were made 2-3 days before and 2-3 months after the RME period. RME effects on NE were followed for three more years. Results: Two to three months after the expansion there were significant improvements in the breathing function and a decrease in the plasma osmolality. NE decreased significantly in all patients after the RME period, and all patients showed full dryness after 3 years. Conclusions: This study demonstrates that RME causes complete dryness in all patients, with significant effects on pathophysiological mechanisms related to NE.

  • 36.
    Alubusi, Sara
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Munhygienvanor och kunskap om oral hälsa hos vuxna individer med utländsk bakgrund: En enkätstudie2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    En stor invandring innebär en ökad påfrestning på tandvården från individer med utländsk bakgrund. Hos individerna med utländsk bakgrund har man funnit en nedsatt oral hälsa. Att undersöka vad individer med utländsk bakgrund vet om orala sjukdomar samt vilka munhygiensvanor de har kan hjälpa till att hitta eventuella riskfaktorer till nedsatt oral hälsa. Detta hjälper tandvården att se inom vilket område man bör informera. och stärka denna grupp för att vid behålla deras orala hälsa. Syfte: Att undersöka munhygiensvanor och kunskaper kring oral hälsa hos vuxna individer med utländsk bakgrund. Frågeställning: Finns det någon skillnad mellan hur ofta män och kvinnor med borstar? Metod: Kvantitativ studie. Empirisk enkätstudie. Enkäten omfattar frågor om munhygienvanor, kunskap om karies och kunskap om parodontit. Urvalet bestod av vuxna män och kvinnor som har en utländsk bakgrund och är över 18 års ålder. Med utländsk bakgrund menas att individerna är födda utomlands och har utländska föräldrar. Studiedeltagarna befann sig på en SFI skola i Mellansverige. Resultat: Antal studiedeltagare som deltog i studien var 78, (n=36 män), (n=29 kvinnor), (n=13 som inte angav kön). Majoriteten av studiedeltagarna visade sig ha goda vanor med antalet gånger de borstar tänderna per dag, hur ofta de använder fluor och användning av orala munhygiensprodukter utöver tandborste. Studien visar även att en mindre del av studiedeltagarna känner de största riskfaktorerna för att få orala sjukdomar. Konklusion: Individer med utländsk bakgrund har goda munhygiensvanor men saknar till viss del kunskap kring orsaken till varför orala sjukdomar som karies och parodontit uppstår.

  • 37.
    Anastassaki, Alkisti
    et al.
    Jönköping University, School of Health Science, HHJ, Dep. of Behavioural Science and Social Work.
    Öster, Anders
    Helkimo, Martti
    Magnusson, Tomas
    Jönköping University, School of Health Science, HHJ. Oral health.
    Globus pharyngeus: Litteraturöversikt och jämförande studie av två patientgrupper1996In: Tandläkartidningen, ISSN 0039-6982, Vol. 88, no 7, 404-409 p.Article, review/survey (Other academic)
  • 38. Andersson, A
    et al.
    Sköld-Larsson, K
    Hallgren, A
    Pettersson, LG
    Twetman, Svante
    Umeå University, Faculty of Medicine, Odontology.
    White spot lesion regression with the CPP-ACP system assessed by a laser fluorescence device (DIAGNOdent).2006In: Oral Health Prev DentArticle in journal (Refereed)
    Abstract [en]

    Purpose: To investigate and compare the effects of a dental cream containing complexes of casein phosphoprotein-amorphous calcium phosphate (CPP-ACP) and fluoride mouth rinses on the regression of white spot lesions (WSL). Material and methods: The study group consisted of 26 healthy adolescents (mean age 14.6 yr) exhibiting 60 teeth with 152 visible WSL sites on incisors and canines immediately after debonding of fixed orthodontic appliances. After bracket removal, professional tooth cleaning and drying, a visual scoring (0-4) and laser fluorescence (LF) readings were carried out. The patients were randomly assigned to two different treatment protocols with the aim to remineralize the lesions: A) daily topical applications of a dental cream containing CPP-ACP (Topacal) for 3 months followed by a 3-month period of daily tooth brushing with fluoridated toothpaste, or B) daily 0.05% sodium fluoride rinses combined with fluoridated toothpaste for 6 months. The registrations were repeated after 1, 3, 6 and 12 months and follow-up data were compared with baseline with aid of chi-square and paired t-tests. Results: A significant improvement of the clinical WSL-scores was found over time in both groups but there was a statistically significant difference (p<0.01) concerning the number of sites that totally disappeared after 12 months in favor for the CPP-ACP regime, 63% vs. 25% respectively. The clinical registrations were mirrored by a statistically significant decrease (p<0.05) in the LF readings at the 6- and 12-month follow-ups compared to baseline. No significant differences were displayed between the groups. Conclusion: Clinical scoring and LF assessment suggested that both regimens could promote regression of WSL after debonding of fixed orthodontic appliances. The visual evaluation suggested an aesthetically more favourable outcome of the amorphous calcium phosphate treatments.

  • 39.
    Andersson, Annica
    et al.
    Karlstad University, Division for Health and Caring Sciences.
    Karlsson, Malin
    Karlstad University, Division for Health and Caring Sciences.
    Arbetstillfredsställelse inom tandhygienistprofessionen2007Independent thesis Basic level (degree of Bachelor), 10 points / 15 hpStudent thesis
    Abstract [sv]

    Tandhygienisters arbetstillfredsställelse och vad som påverkar denna är hittills relativt lite studerat. Det finns således ett stort behov av att undersöka detta område närmare. Syftet med studien var att undersöka vilka faktorer som påverkar arbetstillfredsställelse inom

    tandhygienistprofessionen, samt hur vanligt förekommande det är att yrkesverksamma tandhygienister upplever arbetstillfredsställelse. Metoden som användes var en systematisk litteraturstudie. Resultatet visade att flera faktorer av olika karaktär är av betydelse för

    tandhygienisters upplevelse av arbetstillfredsställelse. De huvudsakliga faktorerna innefattar fysisk arbetsmiljö, psykosociala faktorer samt olika bakgrundsfaktorer. Den fysiska arbetsmiljö som förekommer inom tandhygienistprofessionen innehåller flera moment som

    kan orsaka muskuloskeletala problem, vilket kan påverka upplevelsen av

    arbetstillfredsställelse. Faktorer av psykosocial karaktär såsom stress och arbetsorganisatoriska faktorer samt samarbete och kommunikation över yrkesgränserna framstår i studien ha en stor betydelse för upplevd tillfredsställelse i arbetet. Studien visade

    också att verksamma tandhygienister upplever arbetstillfredsställelse trots att flera av de inverkande faktorerna har en negativ karaktär. Konklusionen är att arbetstillfredsställelse inom tandhygienistyrket påverkas av såväl fysiska som psykosociala förhållanden med

    tonvikt på det senare.

  • 40.
    Andersson, Ida
    et al.
    Karlstad University, Faculty of Social and Life Sciences.
    Berger, Susanne
    Karlstad University, Faculty of Social and Life Sciences.
    Tandblekningens påverkan på tandsubstansen och den omkringliggande vävnaden: En litteraturstudie2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 41.
    Andersson, Linda
    et al.
    Kristianstad University, School of Health and Society.
    Paulsson, Lina
    Kristianstad University, School of Health and Society.
    Klinikchefens uppfattning om tandhygienistens kompetens2010Independent thesis Basic level (degree of Bachelor), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    The aim of the study was to examine the competence of dental hygienists among Clinic Director´s within the Public Dental Service and Private dentists in the county of Skåne . The study was quantitative and consisted of an electronic questionnaire sent out to all Clinic Directors in the county of Skåne. A total of five hundred and thirty eight questionnaires were sent out. The inclusion criteria were the Clinic directors who employed dental hygienists who had obtained their professional degree during the last four years. Twenty nine Clinic directors responded to the study.

    The results showed that in general clinic directors are pleased and feel that dental hygienists are proficient in periodontology and dental caries diagnostics. There were two clinic directors who felt that dental hygienists should have more knowledge in the fields of endodontics and pedodontics.

    The Clinic directors were asked if they wanted to add a certain skill or specialty to the competence of dental hygienists. Two of the clinic directors said that they would like to see dental hygienists be able to measure blood and sugar levels if needed.

    In conclusion, this study shows that most of the clinic directors thought that the dental hygienists had good knowledge and skills within their operating range. The result of this study must be interpreted with caution because of the low response rate.

  • 42.
    Andersson, Pia
    Kristianstad University, Department of Health Sciences.
    Användning av en munbedömningsguide på inneliggande sjukhuspatienter2003In: Svensk sjukhustandläkartidning, ISSN 0348-0011, Vol. 28, no 1, 23-25 p.Article in journal (Other (popular science, discussion, etc.))
  • 43.
    Andersson, Pia
    Kristianstad University, Department of Health Sciences.
    Assessments of oral health status in frail patients in hospital2004Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The general aims of this thesis were to evaluate the usefulness of an oral assess¬ment guide and to determine the oral health status among frail patients in hospital settings. A further aim was to analyze possible factors that may be associated with oral health status, with special focus on the relationship between oral health and nutritional status among elderly rehabilitation patients. The Oral Assessment Guide (OAG) was used in patients with haematological malignancies undergoing chemotherapy. In further studies a Revised Oral Assessment Guide (ROAG) was used among geriatric rehabilitation patients. The inter-rater reliability of the OAG between registered nurses at the ward and a dental hygienist (DH) was good, as well as between a registered nurse and a DH using ROAG. Problems in the oral cavity were detected in all patients with haematological malignancies undergoing chemotherapy. Problems related to mucous membranes, teeth and/or dentures were most frequent. Oral health problems were also a frequent finding among the geriatric rehabilitation patients. The frequency of oral health problems was significantly lower at discharge compared to admission. Oral health problems were more often found among patients that stayed for longer periods at the hospital, were more dependent on help with daily activities and suffered for dysphagia, than among the healthier patients. Oral health problems were more common among the patients being at risk of undernourishment, suspected to be or severely undernourished (UN), than among the well-nourished patients. Problems in oral health status were significantly associated with the occurrence of respiratory diseases, living in special accommodation, being UN and being a woman. The highest Odds Ratio (OR) was found in problems with gums in relation to the occurrence of respiratory diseases (OR 8.9; 95 % CI 2.8-27.8). OAG as well as ROAG were found to be useful for assessing oral health status in frail patients at hospital. Oral health problems were a frequent finding among the patients. The use of an oral assessment tool on a routine basis may facilitate the detection of problems which otherwise can be hidden, and can serve as a guide for initiating individualised oral health procedures.

  • 44.
    Andersson, Pia
    Kristianstad University, Department of Health Sciences.
    Bedömning av munstatus2006In: Munvård inom vård och omsorg / [ed] Öhrn, Kerstin, Andersson Pia, Lund: Studentlitteratur , 2006, 23-40 p.Chapter in book (Other (popular science, discussion, etc.))
  • 45.
    Andersson, Pia
    Kristianstad University, Department of Health Sciences.
    Evaluation of oral health status using an oral assessment guide in geriatric rehabilitation patients and in patients with haematological malignancies2002Licentiate thesis, comprehensive summary (Other academic)
  • 46.
    Andersson, Pia
    Kristianstad University, Department of Health Sciences.
    Evaluation of oral health status using an oral assessment guide on geriatric rehabilitation patients and in patients with haematological malignancies2003In: The first national conference on dental hygiene research in Sweden / [ed] Hovius, Marjolin, 2003, 180- p.Conference paper (Refereed)
  • 47.
    Andersson, Pia
    Kristianstad University, Department of Health Sciences.
    Implementering av en munbedömningsguide på äldre patienter inneliggande på sjukhus2004In: Tandläkartidningen, ISSN 0039-6982, Vol. 24, 25-27 p.Article in journal (Other academic)
  • 48.
    Andersson, Pia
    Kristianstad University, School of Health and Society, Avdelningen för Hälsovetenskap. Kristianstad University, Research environment Oral Health - Public Health - Quality of Life.
    Munhälsa2009In: Omvårdnadens grunder: hälsa och ohälsa / [ed] Edberg, Anna-Karin, Wijk, Helle, Lund: Studentlitteratur, 2009, 349-380 p.Chapter in book (Other academic)
  • 49.
    Andersson, Pia
    Kristianstad University, School of Health and Society, Avdelningen för Hälsovetenskap III. Kristianstad University, Research environment Oral Health - Public Health - Quality of Life.
    Munhälsa2014In: Omvårdnadens grunder: hälsa och ohälsa / [ed] Anna-Karin Edberg, Helle Wijk, Lund: Studentlitteratur AB, 2014, 2, 301-331 p.Chapter in book (Other academic)
  • 50.
    Andersson, Pia
    Kristianstad University, Department of Health Sciences.
    Munhälsa och ätandet2006In: Munvård inom vård och omsorg / [ed] Öhrn Kerstin, Andersson Pia, Lund: Studentlitteratur , 2006, 53-66 p.Chapter in book (Other (popular science, discussion, etc.))
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