تقييم جودة الحشو القنوي للمعالجات اللبية المنجزة من قبل طلاب كلية طب الاسنان جامعة دمشق

Background& Objective: To evaluate the technical quality of root canal treatment performed by undergraduate students and to detect iatrogenic errors. Materials & Methods: The final sample consisted of 256 root-filled teeth with 459 root canals. For each root-filled tooth, at least three periapical radiographs were examined: preoperative, working length determination and postoperative. Two variables were examined: the length and the density of the fillings, categorized as acceptable and non-acceptable. The presence of ledges, perforation, and fractured instruments were also investigated. Chi-square tests were used for statistical analysis. Results: two hundred and nineteen out of 459 root canals (47,7 %) had a root filling that was classified as ‘acceptable’. The lowest percentage of adequate root fillings was found in molars (P < 0.05). unacceptable root filling recorded in 52,3%: density problem ( 39,6%), under filling (32,6%), overfilling (27,9%). Iatrogenic errors were detected in 17,9% of treated root canal . Ledges were noted in10,2 % of cases. The frequency of ledged root canals was significantly greater (P < 0.05) in molars than in other teeth. Conclusion: There is a need to improve the technical quality of root fillings performed by the undergraduate students, especially in molar teeth