Resumo

DELAMARE, Eduardo Luiz et al. Topographic relationship of impacted third molars and mandibular canal: correlation of panoramic radiograph signs and CBCT images. Braz. J. Oral Sci. [online]. 2012, vol.11, n.3, pp. 411-415. ISSN 1677-3225.

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.

Palavras-chave : radiography; tomography; third molar.