Document Detail

Correlation of panoramic radiography and cone beam CT findings in the assessment of the relationship between impacted mandibular third molars and the mandibular canal.
MedLine Citation:
PMID:  22282507     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: The aim of this study was to assess the reliability of four panoramic radiographic findings, both individually and in association, in predicting the absence of corticalization between the mandibular canal and the third molar on cone beam CT (CBCT) images.
METHODS: The sample consisted of 72 individuals (142 mandibular third molars) who underwent pre-operative radiographic evaluation before extraction of impacted mandibular third molars. On panoramic radiographs, the most common signs of corticalization (darkening of roots, diversion of mandibular canal, narrowing of mandibular canal and interruption of white line) and the presence or absence of corticalization between the mandibular third molar and the mandibular canal on CBCT images were evaluated.
RESULTS: Darkening of roots and interruption of white line associated with the absence of corticalization between the mandibular third molar and the mandibular canal on CBCT images were statistically significant, both as isolated findings (p = 0.0001 and p = 0.0006, respectively) and in association (p = 0.002). No statistically significant association was observed for the other panoramic radiographic findings, either individually or in association (p > 0.05).
CONCLUSION: Darkening of roots and interruption of white line observed on panoramic radiographs, both as isolated findings and in association, were effective in determining the risk relationship between the tooth roots and the mandibular canal, requiring three-dimensional evaluation of the case.
F S Neves; T C Souza; S M Almeida; F Haiter-Neto; D Q Freitas; F N Bóscolo
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Publication Detail:
Type:  Comparative Study; Journal Article; Validation Studies     Date:  2012-01-26
Journal Detail:
Title:  Dento maxillo facial radiology     Volume:  41     ISSN:  0250-832X     ISO Abbreviation:  Dentomaxillofac Radiol     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-09-18     Completed Date:  2012-12-04     Revised Date:  2013-10-14    
Medline Journal Info:
Nlm Unique ID:  7609576     Medline TA:  Dentomaxillofac Radiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  553-7     Citation Subset:  D    
State University of Campinas, Department of Oral Diagnosis, Piracicaba, Sao Paulo, Brazil.
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MeSH Terms
Case-Control Studies
Cone-Beam Computed Tomography / statistics & numerical data*
Image Processing, Computer-Assisted / statistics & numerical data
Imaging, Three-Dimensional / statistics & numerical data
Mandible / radiography*
Molar, Third / radiography*
Observer Variation
Radiography, Panoramic / statistics & numerical data*
Retrospective Studies
Risk Assessment
Tooth Root / radiography
Tooth, Impacted / radiography*
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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