Department of Head and Neck and Sensory Organs, Division of Oral Surgery and Implantology, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy.
Department of Head and Neck and Sensory Organs, Division of Oral and Maxillo-Facial Surgery, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy.
Biomed Res Int. 2021 Jul 6;2021:5581435. doi: 10.1155/2021/5581435. eCollection 2021.
The introduction of CAD/CAM and the development of zirconia-based restorations have allowed clinicians to use less expensive materials and faster manufacturing procedures. The purpose of the study was to analyze the differences, in terms of mechanical and biological complication, in multiunit zirconia fixed dental prosthesis (FPDs) on posterior implants produced using a digital workflow. . This study was a retrospective investigation, and patients treated with screw-retained monolithic or partial veneer FPDs on dental implants were selected. Periapical radiographs were taken at baseline and at the 3-year follow-up. Complications were recorded and classified as technical and biological ones.
The study population included 25 patients. The occlusal and interproximal corrections were not clinically significant. In the study sample, the survival rate and success rate of the FPDs after 3 years were 100% and 96%, respectively. One implant failed immediately after placement.
Monolithic zirconia FPDs and partial veneer FPDs showed a 100% survival rate, presenting an interesting alternative to metal ceramic restorations. The partial veneer FPDs had a higher technical complication rate than the monolithic FPDs; however, no statistically significant difference was found.
CAD/CAM 的引入和氧化锆基修复体的发展使得临床医生能够使用更便宜的材料和更快的制造工艺。本研究的目的是分析在后牙种植体上使用数字化工作流程制作的多单位氧化锆固定义齿（FPD）在机械和生物并发症方面的差异。这是一项回顾性研究，选择了接受螺丝固位整体式或部分贴面 FPD 修复的患者。在基线和 3 年随访时拍摄根尖片。记录并发症并分为技术和生物学并发症。
研究人群包括 25 名患者。在研究样本中，FPD 的 3 年生存率和成功率分别为 100%和 96%。有一个种植体在植入后立即失败。
整体氧化锆 FPD 和部分贴面 FPD 的存活率为 100%，为金属陶瓷修复体提供了一种有趣的替代方案。部分贴面 FPD 的技术并发症发生率高于整体 FPD，但无统计学差异。
