Document Type : مقاله‌های پژوهشی

Abstract

Introduction: The aim of this study was to evaluate the frequency of procedural errors during root canal treatment on periapical radiographs of patients referred for the first time to the Oral Radiology Department of Afzal Dental Clinic in 2014‒2015.Materials and methods: In this cross-sectional study, periapical radiographs of 957 endodontically treated teeth of patients referred to the Oral Radiology Department of Afzal Dental Clinic from 2014 to 2015 were scanned and evaluated by a radiologist and an endodontist. The quality of endodontic treatment was evaluated in 3 steps of access cavity preparation, canal preparation and obturation. Data were analyzed with SPSS 20 using descriptive statistics, tables, figures and Pearson’s test (α=0.05). Results: Of 957 endodontically treated teeth only 286 (29.88%) were error-free, 194 (67.83%) of which were maxillary and 92 (32.17%) were mandibular teeth; 41.5% were incisors and canines, 31.1% were premolars and 23.5% were molars. Under-extension, inadequate preparation and single cone were the most frequent errors. Pearson’s correlation coefficient showed low correlation between single cone, strip perforation, gaps and under-extension on one hand and jaw type and tooth type on the other hand (p value < 0.05, r < 0.25). Conclusions: Errors were found in two-thirds of endodontically treated teeth and only 30% of the samples were error-free. Key words: Endodontic errors, Periapical radiography, Access cavity, Root canal obturation.