- 作者：Marcela Milanezi de Almeida ; DDS ; MSc ; Norberti Bernardineli ; DDS ; PhD ; Ronald Ordinola-Zapata ; DDS ; PhD ; ronaldordinola@usp.br" class="auth_mail" title="E-mail the corresponding author ; Marcelo Haas Villas-Bô ; as ; DDS ; MSc ; Pablo André ; s Amoroso-Silva ; DDS ; MSc ; Christian Giampietro Brandã ; o ; DDS ; PhD ; Bruno Martini Guimarã ; es ; DDS ; MSc ; Ivaldo Gomes de Moraes ; DDS ; PhD ; Marco Antonio Hú ; ngaro-Duarte ; DDS ; PhD
- 关键词：Dental anatomy ; mandibular incisor ; microcomputed tomography ; oval canals
- 刊名：Journal of Endodontics
- 出版年：2013
- 出版时间：December 2013
- 年：2013
- 卷：39
- 期：12
- 页码：1529-1533
- 全文大小：708 K
Methods
Mandibular incisors (n = 340) were scanned at 19-μm voxel size resolution, and the numbers of canals were classified according to Vertucci classification, as well as the major and minor diameters of the root and root canals, presence of oval canals, and three-dimensional analysis of the apical third were also measured. Data were presented in terms of median and range for each anatomic classification.
Results
Overall, the specimens had 1 root canal (N = 257). The second most prevalent anatomy was Vertucci type III (N = 56). These anatomies represent 92% of the sample. The medians of the major diameter at the 1-, 2-, and 3-mm level of the most prevalent anatomies were 0.36, 0.39, and 0.47 mm for type I and 0.41, 0.51, and 0.66 mm for type III, respectively. The apical volume appears to be constant among these anatomies (0.63 and 0.59 mm3). Oval canals were found at the 1-mm apical level, with a prevalence of 16.7% for Vertucci type I and 37.5% for Vertucci type III. The presence of oval canals increased at the 3-mm apical level to 32.4% and 76.2% for Vertucci type I and III classifications, respectively.
Conclusions
Type I and III configurations represent 92% of the mandibular incisors studied. Within these anatomic configurations, oval-shaped canals in the apical third were not uncommon and more prevalent in the type III anatomy.