Abstracts of the ESE Wladimir Adlivankine Research Prize and Original Scientific Posters

withdrawn. R7 C. Giampietro Brand~ao*, M.M. Almeida, M.H. Villas Bôas, P.A. Amoroso Silva, B.M. Guimar~aes, R. Ordinola-Zapata, I.G. Moraes & M.A.H. Duarte Department of Endodontics, Cascavel Dental School, University of State of West of Paran a (Unioeste), Cascavel, Paran a & Department of Endodontics, Bauru Dental School, University of S~ao Paulo, Bauru, S~ao Paulo, Brazil Micro–CT evaluation of mandibular incisors root canals: anatomic, linear and volume analysis Aim To describe the anatomy of mandibular incisors using micro-computed tomography analysis, including configuration, linear and volume aspects. Methodology Three hundred and forty extracted mandibular incisors were scanned at 18 lm voxel resolution (SkyScan 1076). The canal morfology were classified according to Vertucci criteria and the major and minor diameters and three-dimensional analysis of the apical third was performed (CTan-CTvol softwares). Data was presented in terms of median and range for each anatomical classification. Results Ninety-one percent of the teeth were classified as Vertucci’s Type I (256) and Type III (56). The medians of major diameter at 1, 2 and 3 mm level of these most prevalent anatomies were 0.36 (type I)-0.41 mm (type III), 0.39–0.51 mm and 0.47–0.66 mm, respectively. Apical volume appears to be constant amongst the main anatomies (0.59 and 0.63 mm). Oval canals were found at the 1 mm apical level in 16.7% of Vertucci’s type I anatomy and 37.3% for type III. The presence of oval canals increased at the 3 mm apical level to 32.4% and 75.9% for Vertucci’s type I and III classifications, respectively. Conclusions Oval shaped canals were common among Vertucci’s types I and III mandibular incisors, which comprised 91% of the analyzed teeth. Moreover, the anatomy of mandibular incisors may vary widely and should be known and identified for a correct root canal treatment. R8