Int J Prosthodont. 2023 May-June;36(3):253–261. doi: 10.11607/ijp.7765. Epub 2022 Oct 21.
To analyze the clinical performance of two-wing–retained resin-bonded fixed dental prostheses (RBFDPs) after 5 years of clinical use with respect to technical and biologic complications, as well as survival and success rates.
RBFDPs were fabricated from 3Y-TZP zirconia layered by hand (Lava Frame veneered with Lava Ceram; 3M ESPE) or metal (Remanium Star, Dentaurum; layered with Reflex, Wieland). The primary endpoints were debonding and fracture. The secondary endpoints (marginal integrity, marginal discoloration, abrasion of antagonist dentition, patient satisfaction, Gingival Index, and side effects) were evaluated at baseline and after 5 years. Survival and success rates were calculated using the Kaplan-Meier method. Log-rank test was used to compare the survival and success rates of the different materials.
The mean observation time was 6 years and 10 months. The estimated cumulative success rate after 5 years was 88.9% ± 10% for metal-supported and 33% ± 16% for all-ceramic two-wing RBFDPs. After conversion into one-wing RBFDPs, the survival rate was 100% in both groups. Debonding of one of the two wings was the major complication. One zirconia framework fracture occurred. Metal-based two-wing RBFDPs showed a significantly higher success rate, but lower esthetic evaluation.
Due to a reduction in technical complication rate and less invasiveness, one-wing RBFDPs should be preferred over two-wing RBFDPs whenever possible.
分析经过 5 年临床使用后，双翼保留树脂粘结固定义齿（RBFDP）在技术和生物学并发症方面的临床性能，以及生存率和成功率。
RBFDP 由 3Y-TZP 氧化锆手工分层（Lava Frame 用 Lava Ceram 贴面；3M ESPE）或金属（Remanium Star，登特伦；用 Reflex， Wieland 分层）制成。主要终点是脱粘和断裂。次要终点（边缘完整性、边缘变色、对颌牙磨损、患者满意度、牙龈指数和副作用）在基线和 5 年后进行评估。生存和成功率使用 Kaplan-Meier 方法计算。对数秩检验用于比较不同材料的生存和成功率。
平均观察时间为 6 年 10 个月。5 年后估计的累积成功率为金属支持的 RBFDP 为 88.9%±10%，全陶瓷双翼 RBFDP 为 33%±16%。转换为单翼 RBFDP 后，两组的生存率均为 100%。双翼之一脱粘是主要并发症。发生了一例氧化锆框架断裂。金属基双翼 RBFDP 显示出更高的成功率，但美观评价较低。
由于技术并发症发生率降低和侵入性较小，只要可能，单翼 RBFDP 应优先于双翼 RBFDP。
