Avaliação topográfica do canal mandibular em relação aos dentes posteriores inferiores em tomografias computadorizadas de feixe cônico

Abstract

The incidence of permanent injury from mandibular nerve is related like result of molar narrow proximity of mandibular canal, due to this reason, the lower alveolar nerve can be damaged during the dental extraction. This can cause temporary or permanent dormancy. Objective: Evaluate the topography of mandibular canal and its relation with root tips from lower posterior in cone beam computed tomography. Methodology: It have been used 103 cone beam computed tomography selected and accomplished from 3D K9000 Kodak tomography (Carestream Dental, Rochester, NY, USA) and analysed using 3.2.9 image 3D CS (Carestream Dental, Rochester, NY, USA). Results: From all of computed tomography researched, the majority was from feminine sex (70%), and the distal roots from the third lower has 9,8 (Odds ratio) times more channel. To be intimacy associated with the roof of mandibular channel, by now the mesial roots offer only 7,7 (Odds ratio) of distal roots from rights thirds molars and lefts demonstrate the low valves of media and standard deviation respectively (1.129 ± 1.855 and 1.085 ± 1.690). Conclusion: the chances of direction from mandibular canal were the type more present and is associated with more chances of intimacy relation with the mandibular channel. The type 5 is the distance between the root tip and the upper edge from channel, is bigger than 2 mm, it was the most prevalent in a coronal view, the most prevalence was to the type V, whose mandibular channel find below the periapex.