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Abstract：
OBJECTIVE: The aims of the present longitudinal retrospective observational case series study were to investigate the survival and success rates of primary non-surgical endodontic therapy.
METHODS: Patients with at least one endodontically treated tooth (ETT), with 5 years of follow-up and in compliance with the recall programme of at least 1 time per year in a private practice setting, were recruited. Kaplan-Meier survival analyses were performed considering (a) tooth extraction/survival and (b) endodontic success as the outcome variables. A regression analysis was performed to evaluate prognostic factors associated with tooth survival.
RESULTS: Three hundred twelve patients and 598 teeth were included. The cumulative survival rates showed 97%, 81%, 76% and 68% after 10, 20, 30 and 37 years, respectively. The corresponding values for endodontic success were 93%, 85%, 81% and 81%, respectively.
CONCLUSIONS: The study demonstrated high longevity in symptomless function as well as high success rates of ETT. The most significant prognostic factors associated with tooth extraction were the presence of deep (> 6 mm) periodontal pockets, the presence of pre-operative apical radiolucency and the lack of occlusal protection (no use of a night guard).
CONCLUSIONS: The favourable long-term (> 30 years) prognosis of ETT must encourage clinicians to rely on primary root canal treatment when taking the decision regarding whether a tooth with pulpal and/or periapical diseases should be saved or be extracted and replaced with an implant.
METHODS: Patients with at least one endodontically treated tooth (ETT), with 5 years of follow-up and in compliance with the recall programme of at least 1 time per year in a private practice setting, were recruited. Kaplan-Meier survival analyses were performed considering (a) tooth extraction/survival and (b) endodontic success as the outcome variables. A regression analysis was performed to evaluate prognostic factors associated with tooth survival.
RESULTS: Three hundred twelve patients and 598 teeth were included. The cumulative survival rates showed 97%, 81%, 76% and 68% after 10, 20, 30 and 37 years, respectively. The corresponding values for endodontic success were 93%, 85%, 81% and 81%, respectively.
CONCLUSIONS: The study demonstrated high longevity in symptomless function as well as high success rates of ETT. The most significant prognostic factors associated with tooth extraction were the presence of deep (> 6 mm) periodontal pockets, the presence of pre-operative apical radiolucency and the lack of occlusal protection (no use of a night guard).
CONCLUSIONS: The favourable long-term (> 30 years) prognosis of ETT must encourage clinicians to rely on primary root canal treatment when taking the decision regarding whether a tooth with pulpal and/or periapical diseases should be saved or be extracted and replaced with an implant.
摘要：
目的：本纵向回顾性观察性病例系列研究的目的是调查原发性非手术牙髓治疗的生存率和成功率。
方法：患有至少一颗牙髓治疗牙齿（ETT）的患者，经过5年的随访，并在私人执业环境中遵守每年至少1次的召回计划，被招募。考虑到（a）拔牙/存活率和（b）牙髓成功作为结果变量，进行了Kaplan-Meier生存分析。进行回归分析以评估与牙齿存活相关的预后因素。
结果：纳入了112例患者和598颗牙齿。累计生存率为97%,81%,76%和68%在10年、20年、30年和37年后，分别。牙髓成功的相应值为93％，85%,81%和81%，分别。
结论：该研究证明了无症状功能的高寿命以及ETT的高成功率。与拔牙相关的最重要的预后因素是存在深（>6mm）牙周袋，术前心尖射线不透性的存在和缺乏咬合保护（不使用夜间警卫）。
结论：ETT的良好的长期（>30年）预后必须鼓励临床医生在决定是否应保存牙髓和/或根尖周病的牙齿时，依靠初级根管治疗。
方法：患有至少一颗牙髓治疗牙齿（ETT）的患者，经过5年的随访，并在私人执业环境中遵守每年至少1次的召回计划，被招募。考虑到（a）拔牙/存活率和（b）牙髓成功作为结果变量，进行了Kaplan-Meier生存分析。进行回归分析以评估与牙齿存活相关的预后因素。
结果：纳入了112例患者和598颗牙齿。累计生存率为97%,81%,76%和68%在10年、20年、30年和37年后，分别。牙髓成功的相应值为93％，85%,81%和81%，分别。
结论：该研究证明了无症状功能的高寿命以及ETT的高成功率。与拔牙相关的最重要的预后因素是存在深（>6mm）牙周袋，术前心尖射线不透性的存在和缺乏咬合保护（不使用夜间警卫）。
结论：ETT的良好的长期（>30年）预后必须鼓励临床医生在决定是否应保存牙髓和/或根尖周病的牙齿时，依靠初级根管治疗。
