Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
Vol. 11, No. 3, 2012, pp. 411-415
Bioline Code: os12043
Full paper language: English
Document type: Research Article
Document available free of charge
Brazilian Journal of Oral Sciences, Vol. 11, No. 3, 2012, pp. 411-415
© Copyright 2012 - Braz J Oral Sci.
Topographic relationship of impacted third molars and mandibular canal: correlation of panoramic radiograph signs and CBCT images|
Delamare, Eduardo Luiz; Liedke, Gabriela Salatino; Vizzotto, Mariana Boessio; da Silveira, Heraldo Luis Dias; de Azambuja, Tais Weber Furlanetto & da Silveira, Heloisa Emilia Dias
Aim: This study evaluated the proximity and relation of impacted lower third molars and mandibular
canal on panoramic radiography. Methods: Radiographic signals associated with proximity of
structures and Pell & Gregory and Winter classifications of 78 impacted teeth were analyzed and
compared with CBCT images (gold standard). The associations between the findings were tested
with Pearson’s chi-square. Results: Direct contact between structures was observed in 85% of
cases of radiolucent band over roots. Conclusions: Radiolucent band over roots is the image
more associated with direct contact between structures and the one that indicates lingual positioning
of the canal more consistently. Some categories of Pell & Gregory and Winter classifications
suggested signs of the topographic location of the mandibular canal.
radiography, tomography, third molar.
Alternative site location: http://www.fop.unicamp.br/brjorals