Resumo

FREITAS, George Borja de et al. Classification and prevalence of changes mandibular canal through examination of cone beam computed tomography. Rev. cir. traumatol. buco-maxilo-fac. [online]. 2016, vol.16, n.3, pp. 06-12. ISSN 1808-5210.

The dental surgery involving structures adjacent to the mandibular canal, require accurate knowledge of intraosseous course of this anatomical structure and its variations, reducing the risk of injuries to this site. This research aimed to determine the prevalence of mandibular bifidus channels through analysis (CBCT). The sample comprised 300 CT scans obtained in the database of Radiology and Imaging Department of the Faculty São LeopoldoMandic, Campinas- SP. Was drawn a cutting plane accompanying the bone edge of each patient to obtain the cross section. Of the 300 patients surveyed, 188 (62.7%) were female and 112 gender (37.3%) were male. The age range of patients was comprised of 13 to 87 years of age Changes in the mandibular canal were observed in 90 patients representing (30.0%) of the sample, this total met 51 women (56.7%) and 39 men (43.3%). Regarding side affected by the change, it was found the following percentages right sides 32.2%, left 24.5% and bilateral occurrence were found in 43.3% of cases. According to the results obtained in this study, we found a prevalence of 30% of bifid mandibular canals, bifid canal type most prevalent was class B mesial or earlier and the higher incidence of mandibular bifidus canals was bilateral.

Palavras-chave : Bífid canal; Anatomy; CT cone beam..