Department of Restorative Dentistry, School of Medicine Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK.
Int Endod J. 2018 Apr;51 Suppl 3:e197-e203. doi: 10.1111/iej.12803. Epub 2017 Aug 24.
To evaluate radiographically the technical quality of root fillings performed by undergraduate dental students and to assess whether students were exposed to an appropriate endodontic case mix during their clinical training.
A retrospective audit was undertaken evaluating the clinical records of patients who underwent endodontic procedures during the period from September 2015 to June 2016 in the Dental School at Queen's University Belfast, UK. Two final-year dental students were trained and calibrated to evaluate postoperative intra-oral periapical radiographs of completed root canal treatments using specific assessment criteria. Data were presented as frequencies, percentage and mean ± standard deviation (SD). Comparisons of treatment outcomes between groups (posterior and anterior teeth) were calculated using Fisher's exact test, and the level of significance was set at P < 0.05. Intra- and interexaminer reproducibility was assessed by Kappa statistics.
A total of 222 teeth and 381 canals were assessed, and of those, 253 (66%) of the root fillings were found to be acceptable in all the assessment parameters, namely taper, length and lateral adaptation of the root filling. Subanalysis of individual root filling parameters revealed that 372 canals (97%) exhibited good taper, and 275 canals (72%) were considered to be of an appropriate length, with 89 canals (23%) found to be underfilled and 17 canals (5%) overfilled. Overall 346 (91%) of canals had good lateral condensation. Students treated both single and multirooted teeth, and there was no significant association between tooth type and the quality of root filling provided (P > 0.05).
In the majority of the teeth treated by undergraduate students at Queen's University Belfast, the technical quality of the root filling was acceptable and students were exposed to an appropriate case mix for endodontic training.
评估本科生进行根管充填的技术质量，并评估学生在临床培训期间是否接触到适当的牙髓病例组合。
回顾性审核了 2015 年 9 月至 2016 年 6 月期间在英国贝尔法斯特女王大学牙科学院接受牙髓治疗的患者的临床记录。对两名牙科学四年级学生进行了培训和校准，以使用特定的评估标准评估完成根管治疗后的口腔内根尖周放射影像。数据以频率、百分比和平均值±标准差（SD）表示。使用 Fisher 确切检验比较组间（后牙和前牙）的治疗效果，显著性水平设置为 P<0.05。采用 Kappa 统计评估内部和外部观察者的可重复性。
共评估了 222 颗牙和 381 个根管，其中 253 颗（66%）的根管充填在所有评估参数中均被认为是可接受的，即根管充填的锥度、长度和侧向适应性。对个别根管充填参数的亚分析显示，372 个根管（97%）具有良好的锥度，275 个根管（72%）被认为长度适当，89 个根管（23%）存在欠填，17 个根管（5%）存在超填。总体而言，346 个根管（91%）具有良好的侧向压缩。学生治疗单根和多根牙，牙齿类型与提供的根管充填质量之间没有显著关联（P>0.05）。
在贝尔法斯特女王大学的本科生治疗的大多数牙齿中，根管充填的技术质量是可接受的，学生接触到了适当的牙髓病例组合进行牙髓培训。
