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Tooth survival following root canal treatment by general dental practitioners in a Swedish county - a 10-year follow-up study of a historical cohort.
International Endodontic Journal ( IF 5.4 ) Pub Date : 2020-09-01 , DOI: 10.1111/iej.13392
S Kebke 1 , H Fransson 2, 3 , M Brundin 4 , F J Mota de Almeida 5
Affiliation  

AIM To evaluate the 10-year survival rate of root filled teeth treated by general dental practitioners (GDPs), and to identify possible prognostic factors. METHODOLOGY In 2006, 3 676 individuals had at least one tooth root filled by a GDP within the Norrbotten Public Dental Service, Sweden. Over the next 10 years, 331 individuals died and were excluded. A random sample of 302 of the remaining individuals were included in the study, of whom 280 (n=280 teeth) were included in the analysis. Dental records were reviewed retrospectively by a calibrated researcher to collect predetermined data regarding individual, preoperative, intra-operative, and postoperative factors. The outcome measure was tooth extraction over time, and cases with no events were censored, regardless of apical status or symptoms, until last known date of tooth survival. In case of missing data, individuals were recalled for a control visit. Kaplan-Meier survival tables, and Cox regression models were used for analysis. P<0.05 was considered statistically significant. RESULTS The cumulative 10-year survival was 81.7% (standard error: 2.6%), and the mean incidence of tooth extraction during the 10 years was 1.8% per year. The univariate analysis identified three possible prognostic factors (p<0.05) that were associated with extraction: molars, two or more emergency inter-appointment visits during the treatment, and root canal treatments consisting of five or more separate sessions. A multivariate regression analysis revealed no significant relationships for the variables gender, tooth type, number of contacts, any emergency visits during endodontic treatment, number of sessions to complete endodontic treatment, pulp diagnosis, or type of permanent restoration and extraction. CONCLUSIONS The mean incidence of tooth loss over the first 10 years after completion of root canal treatment performed by a GDP was approximately 2% per year. No prognostic factors could be identified.

中文翻译:

瑞典某县普通牙科医生对根管治疗后的牙齿存活-一项历史队列的10年随访研究。

目的评估普通牙科医生(GDPs)治疗的根部充填牙齿的10年生存率,并确定可能的预后因素。方法在2006年,瑞典Norrbotten公共牙科服务局的3676名个体的至少一个牙根由GDP填充。在接下来的10年中,有331人死亡,被排除在外。研究中随机抽取了302个剩余个体,其中分析中包括了280(n = 280颗)牙齿。由经过校准的研究人员回顾性地回顾牙科记录,以收集有关个体,术前,术中和术后因素的预定数据。结果指标是随着时间的推移拔牙,并且对没有任何事件的病例进行检查,无论其心尖状态或症状如何,直到牙齿存活的最后日期为止。如果缺少数据,则召回个人进行对照访问。使用Kaplan-Meier生存表和Cox回归模型进行分析。P <0.05被认为具有统计学意义。结果10年累积生存率为81.7%(标准误:2.6%),而10年的平均拔牙发生率为每年1.8%。单因素分析确定了与拔牙有关的三种可能的预后因素(p <0.05):磨牙,治疗期间两次或更多次紧急预约间就诊以及由五个或更多个单独疗程组成的根管治疗。多元回归分析显示,变量,性别,牙齿类型,接触次数,牙髓治疗期间的任何急诊就诊,完成牙髓治疗,牙髓诊断或永久性修复和摘除类型的疗程数。结论GDP完成的根管治疗完成后的前10年中,牙齿脱落的平均发生率约为每年2%。无法确定预后因素。
更新日期:2020-09-01
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