Prevalence Of dehiscence in endodontically treated mandibular anteriorteeth

Uluslararası Bilimsel Kongre ve Sergisi (27. 2021: İzmir, Türkiye)Aim: Dehiscence is defined as the cervical root surface exposed more than 2 mm. The aim of this study was to evaluate the prevalence of dehiscence of endodontically treated teeth according to Yang’s classification using cone-beam computed tomography (CBCT). Materials and Methods: Images of 542 teeth belong to 96 patients who were referred to the clinic were retrospectively reviewed. Furcation lesion, periapical lesion, root resorption, teeth with post-core restoration, and periodontal loss were excluded from the study. For the study, 310 endodontically treated and 196 teeth without endodontic treatment were selected. Images were viewed on coronal, axial, and sagittal planes in CBCT to detect dehiscence. The prevalence of dehiscence was recorded in three-dimensional reconstruction images and categorized according to Yang’s classification. The statistical analyses were performed. Results: The prevalence of dehiscence of teeth with endodontic treatment was 13.26%, this rate was 4.5% in teeth without endodontic treatment. The dehiscence rate in endodontically treated central, lateral and canine teeth was 13.51%, 11.11%, and 15.25%, respectively. This rate was 14.44%, 11.21%, and 14.15% in teeth without endodontic treatment. All dehiscence (100%) was in the buccal aspect. According to Yang's classification, 60% of the total dehiscence was the class I division I type, which includes the coronal third of the root in the buccal part. Both buccal and lingual dehiscence was detected in 5% of the total dehiscence. No statistically significant difference in dehiscence between teeth with and without root canal treatment. There was no difference between central, lateral, and canine in the presence of dehiscence. Conclusion: It was shown that endodontic treatment did not affect the presence of dehiscence. Considering the presence of dehiscence in teeth with or without root canal treatment, it is recommended to use CBCT to evaluate the anatomical structure more accurately before periodontal or implant surgery.No sponso