Department of Prosthetic Dentistry, University School of Dental Medicine, Martin-Luther-University Halle-Wittenberg, Magdeburger Str. 16, 06112, Halle, Germany.
Department of Prosthetic Dentistry, University Hospital Heidelberg, University of Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.
Clin Oral Investig. 2023 Aug;27(8):4411-4423. doi: 10.1007/s00784-023-05060-9. Epub 2023 May 22.
This 120-month follow-up study aimed to investigate the complication rate of abutment teeth after endodontic pretreatment with base metal alloy double crowns with friction pins.
A total of 158 participants (n = 71, 44.9% women) aged 62.5 ± 12.7 years with 182 prostheses on 520 abutment teeth (n = 459, 88.3% vital) were retrospectively analyzed between 2006 and 2022. Of the endodontically treated abutment teeth, 6.9% (n = 36) were additionally treated with post and core reconstructions. Cumulative complication rates were calculated using the Kaplan-Meier estimator and log-rank test. In addition, Cox regression analysis was performed.
The cumulative complication rate at 120 months for the entire set of abutment teeth was 39.6% (confidence interval [CI]: 33.0-46.2). Endodontically treated abutment teeth (33.8%; CI: 19.6-48.0) were found to have a significantly higher cumulative fracture rate than vital teeth (19.9%; CI: 13.9-25.9, p < 0.001). Endodontically treated teeth restored with post and core reconstructions (30.4%; CI: 13.2-47.6) showed a nonsignificant lower cumulative fracture rate than that of teeth with root fillings only (41.6%; CI: 16.4-66.8, p = 0.463).
Higher 120-month cumulative fracture rates were observed in endodontically treated teeth. Comparable performance was observed in teeth with post and core reconstructions compared to teeth with root fillings only.
If endodontically treated teeth are used as abutments for double crowns, the risk of complications from these teeth should be considered when planning treatment and communicating with the patient.
本为期 120 个月的随访研究旨在探讨使用带摩擦钉的贱金属合金双冠对根管预处理后的基牙的并发症发生率。
回顾性分析 2006 年至 2022 年间 520 颗基牙（459 颗基牙有活力，占 88.3%）上 182 个修复体的 158 名患者（71 名，44.9%为女性）的资料，这些患者的年龄为 62.5±12.7 岁。对于根管治疗的基牙，有 6.9%（n=36）进行了桩核修复。使用 Kaplan-Meier 估计器和对数秩检验计算累积并发症发生率。此外，还进行了 Cox 回归分析。
整个基牙组在 120 个月时的累积并发症发生率为 39.6%（置信区间 [CI]：33.0-46.2）。与有活力的牙齿（19.9%，CI：13.9-25.9，p<0.001）相比，根管治疗的基牙（33.8%，CI：19.6-48.0）的累积折裂率明显更高。进行桩核修复的根管治疗牙（30.4%，CI：13.2-47.6）的累积折裂率与仅进行根管充填的牙齿（41.6%，CI：16.4-66.8，p=0.463）相比无显著差异。
在根管治疗的牙齿中观察到更高的 120 个月累积折裂率。与仅进行根管充填的牙齿相比，进行桩核修复的牙齿具有相似的性能。
如果将根管治疗的牙齿用作双冠的基牙，在治疗计划和与患者沟通时应考虑这些牙齿发生并发症的风险。
