挪威公共牙科服务中牙医进行根管治疗的牙齿的技术质量和根尖状况的个体化培训课程效果：一项观察性干预研究。

Department of Endodontics, Faculty of Dentistry, University of Oslo, Oslo, Norway.

Center for Oral Health Services and Research, TkMidt, Trondheim, Norway.

Int Endod J. 2022 Mar;55(3):240-251. doi: 10.1111/iej.13669. Epub 2021 Dec 7.

AIM

To investigate the effect of a continuing education course on technical quality and treatment outcome for root filled permanent teeth in Møre and Romsdal County, Norway.

METHODOLOGY

Fifty-two dentists employed in the Public Dental Service in Møre and Romsdal county, Norway, completed a two-day continuing education course in root canal treatment. Periapical radiographs of root filled teeth treated before and after the course, with at least one-year follow-up were identified and scored for technical quality and periapical status. Technical root filling quality was assessed by density and length and the treatment outcome by PAI scores. Treatment information was achieved from the county's electronic dental record system. Information regarding the dental practitioners' background and treatment procedure routines was collected by a questionnaire. Descriptive statistics analyses and mixed-effect logistic regression analyses were performed to evaluate the effect of the course.

RESULTS

Radiographs were available for 224 teeth root filled before and for 221 teeth after the course. The proportion of teeth with adequate root filling quality was significantly lower after the course (p = .006), associated mainly with short root fillings (p < .001). No significant differences were observed in treatment outcome. There were, however, large differences in treatment outcome amongst subgroups of dentists. Further, there was evidence of effect modification by the continuing education course on periapical outcome by patient's age (p = .0023) suggesting that teeth in patients ≤18 years healed relatively better post-course compared to patients >18 years.

CONCLUSIONS

A two-day continuing education course in root canal treatment attended by Public Dental Service dentists in Norway did not improve the technical quality of root fillings or periapical status associated with root filled teeth.

目的

调查挪威摩尔达伦郡继续教育课程对牙髓治疗技术质量和治疗效果的影响。

方法

挪威摩尔达伦郡公共牙科服务的 52 名牙医参加了为期两天的根管治疗继续教育课程。确定并评估了课程前后至少随访一年的牙髓填充牙的根尖周放射照片的技术质量和根尖周状况。技术根充质量通过密度和长度进行评估，治疗效果通过 PAI 评分进行评估。治疗信息来自该县的电子牙科记录系统。通过问卷调查收集有关牙医背景和治疗程序常规的信息。采用描述性统计分析和混合效应逻辑回归分析评估课程的效果。

结果

课程前后分别有 224 颗和 221 颗牙齿的放射照片可用。课程后，具有足够根充质量的牙齿比例显著降低（p=0.006），主要与短根充有关（p<0.001）。治疗效果没有显著差异。然而，牙医亚组之间的治疗效果存在很大差异。此外，继续教育课程对根尖周结果的影响存在患者年龄的修饰效应（p=0.0023），表明≤18 岁患者的牙齿在课程后相对愈合得更好，而>18 岁患者的牙齿则相反。