Change search
ReferencesLink to record
Permanent link

Direct link
Pre-operative radiographic evaluation of lower third molars with computed tomography
Department of Radiology, Sunderby Hospital, SE-971 80, Luleå, Sweden.ORCID iD: 0000-0001-8229-5428
2006 (English)In: Dento-Maxillo-Facial Radiology, ISSN 0250-832X, Vol. 35, no 1, 30-35 p.Article in journal (Refereed) Published
Abstract [en]

OBJECTIVES: To report radiographic findings of examinations with computed tomography (CT) of impacted lower third molars with an intimate relation to the mandibular canal and to investigate how findings of a dark band across the roots of the lower third molar on panoramic views correspond to the CT findings.

METHODS: CT images of 90 lower third molars (64 patients, mean age 34.6 years) in which plain radiography was insufficient to allow determination of the precise anatomical relations were reviewed retrospectively. Panoramic views of 88 teeth existed; these images were interpreted independent of the CT examinations with respect to presence of a dark band across the roots.

RESULTS: In 31% of the CT images, the course of the mandibular canal was buccal, in 33% lingual, in 26% inferior, and in 10% inter-radicular. The tooth was in contact with the mandibular canal in 94% and with the lingual cortex in 86%. In 23%, grooving of the root by the canal was judged to be present. In 63% of the cases where a dark band across the roots was observed on panoramic radiographs, CT revealed grooving of the root.

CONCLUSIONS: Pre-operative CT of lower third molars is motivated in selected cases when plain radiography is inconclusive. The finding of a dark band across the roots on panoramic radiographs is an indicator of grooving of the tooth by the canal and justifies a pre-operative CT examination. The absence of dark bands on panoramic views does not exclude grooving of the roots.

Place, publisher, year, edition, pages
British institute of radiology , 2006. Vol. 35, no 1, 30-35 p.
Keyword [en]
computed tomography; inferior alveolar nerve; radiography; third molar
National Category
Radiology, Nuclear Medicine and Medical Imaging
URN: urn:nbn:se:umu:diva-89544DOI: 10.1259/dmfr/58068337ISI: 000235275200006PubMedID: 16421261OAI: diva2:721484
Available from: 2014-06-04 Created: 2014-06-04 Last updated: 2014-06-18Bibliographically approved

Open Access in DiVA

fulltext(382 kB)220 downloads
File information
File name FULLTEXT01.pdfFile size 382 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Flygare, Lennart
In the same journal
Dento-Maxillo-Facial Radiology
Radiology, Nuclear Medicine and Medical Imaging

Search outside of DiVA

GoogleGoogle Scholar
Total: 220 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 24 hits
ReferencesLink to record
Permanent link

Direct link