Salvi G E, Siegrist Guldener B E, Amstad T, Joss A, Lang N P
Department of Periodontology and Fixed Prosthodontics, School of Dental Medicine, University of Berne, Berne, Switzerland.
Int Endod J. 2007 Mar;40(3):209-15. doi: 10.1111/j.1365-2591.2007.01218.x.
To assess survival rates and complications of root-filled teeth restored with or without post-and-core systems over a mean observation period of >or=4 years.
A total of 325 single- and multirooted teeth in 183 subjects treated in a private practice were root filled and restored with either a cast post-and-core or with a prefabricated titanium post and composite core. Root-filled teeth without post-retained restorations served as controls. The restored teeth served as abutments for single unit metal-ceramic or composite crowns or fixed bridges. Teeth supporting cantilever bridges, overdentures or telescopic crowns were excluded.
Seventeen teeth in 17 subjects were lost to follow-up (17/325: 5.2%). The mean observation period was 5.2 +/- 1.8 (SD) years for restorations with titanium posts, 6.2 +/- 2.0 (SD) years for cast post-and-cores and 4.4 +/- 1.7 (SD) years for teeth without posts. Overall, 54% of build-ups included the incorporation of a titanium post and 26.5% the cementation of a cast post-and-core. The remaining 19.5% of the teeth were restored without intraradicular retention. The adjusted 5-year tooth survival rate amounted to 92.5% for teeth restored with titanium posts, to 97.1% for teeth restored with cast post-and-cores and to 94.3% for teeth without post restorations, respectively. The most frequent complications included root fracture (6.2%), recurrent caries (1.9%), post-treatment periradicular disease (1.6%) and loss of retention (1.3%).
Provided that high-quality root canal treatment and restorative protocols are implemented, high survival and low complication rates of single- and multirooted root-filled teeth used as abutments for fixed restorations can be expected after a mean observation period of >or=4 years.
评估在平均观察期≥4年的情况下，有或没有桩核系统修复的根管充填牙的生存率和并发症。
在一家私人诊所治疗的183名受试者中，共有325颗单根和多根牙进行了根管充填，并用铸造桩核或预制钛桩及复合核进行修复。没有桩固位修复的根管充填牙作为对照。修复后的牙齿作为单单位金属烤瓷或复合冠或固定桥的基牙。支持悬臂桥、覆盖义齿或套筒冠的牙齿被排除。
17名受试者的17颗牙齿失访（17/325：5.2%）。钛桩修复的平均观察期为5.2±1.8（标准差）年，铸造桩核修复的为6.2±2.0（标准差）年，无桩牙齿的为4.4±1.7（标准差）年。总体而言，54%的修复包括使用钛桩，26.5%为铸造桩核的粘结。其余19.5%的牙齿修复时没有根管内固位。钛桩修复牙齿的调整后5年牙齿生存率为92.5%，铸造桩核修复牙齿的为97.1%，无桩修复牙齿的为94.3%。最常见的并发症包括牙根折断（6.2%）、继发龋（1.9%）、治疗后根尖周病（1.6%）和固位丧失（1.3%）。
如果实施高质量的根管治疗和修复方案，在平均观察期≥4年后，用作固定修复基牙的单根和多根根管充填牙有望获得高生存率和低并发症率。
