Topographic relationship of impacted third molars and mandibular canal: correlation of panoramic radiograph signs and CBCT images

• Autor(a) principal: Delamare, Eduardo Luiz
• Data de Publicação: 2015
• Outros Autores: Liedke, Gabriela Salatino, Vizzotto, Mariana Boessio, Silveira, Heraldo Luis Dias da, Azambuja, Tais Weber Furlanetto de, Silveira, Heloisa Emilia Dias da
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Brazilian journal of oral sciences (Online)
• Texto Completo: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641395
• topic: Radiography; Tomography; Third molar; Odontologia

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.