Clinical ResearchEvaluation of Root Canal Configuration of Mandibular Molars in a Brazilian Population by Using Cone-beam Computed Tomography: An In Vivo Study
Section snippets
Materials and Methods
CBCT images of 234 mandibular first molars and 226 second mandibular molars from 154 Brazilian individuals (70 men and 84 women) were identified in the database of the Oral Radiology Department. These individuals were referred to this department between 2010 and 2011 and required tomography examination by CBCT as part of their dental examination, diagnosis, and treatment planning. Written and verbal consent of each patient was obtained and approved by the University Institutional Review Board.
Results
Of the 234 mandibular first molars included in the study, only variants 1, 3, 4, and 9 were observed. The presence of 2 canals in the mesial root and 1 canal in the distal root of teeth with 2 separate roots (variant 3) represented the most common morphology (74%). The next most common morphology was the presence of 2 separate roots with 2 canals in the mesial root and 2 canals in the distal root (variant 4) (12%). The presence of teeth with 2 separate roots with 1 canal in the mesial root and
Discussion
The study of root canal anatomy is important for clinical dental practice and has immense anthropological significance. Different in vitro techniques have been described to evaluate root canal morphology, the most popular of which are demineralization and staining of extracted teeth (8). Clinically, however, CBCT provides an excellent, nondestructive, noninvasive imaging option with the potential to detect most anatomic variations, while creating an accurate representation of the external and
Conclusion
A higher prevalence of 2 separate roots with 2 canals in the mesial root and 1 canal in the distal root was observed in mandibular first and second molars (74% and 54%, respectively). In addition, a lower incidence of C-shaped canals and 3-rooted teeth was observed in a Brazilian population. CBCT is a clinically useful tool for endodontic diagnosis and treatment.
Acknowledgments
The authors deny any conflicts of interest related to this study.
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