Prosthetic Dental Science Department, College of Dentistry, King Saud University, Riyadh 60169, Saudi Arabia.
Medicina (Kaunas). 2022 Sep 25;58(10):1347. doi: 10.3390/medicina58101347.
The aim of the study was to systematically review the overall outcomes of studies comparing the misfit of yttria-stabilized zirconia (Y-TZP) CAD-CAM implant-supported frameworks with frameworks fabricated with other materials and techniques. An electronic literature search of English literature was performed using Google Scholar, Scopus, Web of Science, MEDLINE (OVID), EMBASE, and PubMed, using predetermined inclusion criteria. Specific terms were utilized in conducting a search from the inception of the respective database up to May 2022. After the search strategy was applied, the data were extracted and the results were analyzed. The focused question was: Is the misfit of the implant-supported zirconia CAD-CAM framework lower than that of non-Y-TZP implant-supported fixed restorations? Eleven articles were included for qualitative assessment and critical appraisal in this review. In the included studies, Y-TZP CAD-CAM implant-supported frameworks were compared to Titanium (Ti), Ni-Cr, Co-Cr, PEEK and high-density polymer, and cast and CAD-CAM frameworks. The studies used scanning electron microscopy, one-screw tests, digital or optical microscopy, 3D virtual assessment, and replica techniques for analyzing the misfit of frameworks. Six studies showed comparable misfits among the Y-TZP CAD-CAM frameworks and the controls. Three studies showed higher misfits for the Y-TZP CAD-CAM frameworks, whereas two studies reported lower misfits for Y-TZP CAD-CAM implant frameworks compared to controls. Y-TZP CAD-CAM implant-supported frameworks have comparable misfits to other implant-supported frameworks. However, due to heterogeneity in the methodologies of the included studies, the overall numerical misfit of the frameworks assessed in the reviewed studies is debatable.
本研究旨在系统地综述比较氧化钇稳定四方氧化锆（Y-TZP）CAD-CAM 种植体支持的修复体与其他材料和技术制作的修复体的不匹配整体结果。使用 Google Scholar、Scopus、Web of Science、MEDLINE（OVID）、EMBASE 和 PubMed 进行了英文文献的电子检索，使用了预定的纳入标准。在各自数据库的创建之初至 2022 年 5 月，使用特定术语进行了搜索。在应用搜索策略后，提取数据并分析结果。聚焦问题是：种植体支持的氧化锆 CAD-CAM 修复体的不匹配是否低于非 Y-TZP 种植体支持的固定修复体？本综述纳入了 11 篇文章进行定性评估和批判性评价。在纳入的研究中，将 Y-TZP CAD-CAM 种植体支持的修复体与钛（Ti）、镍铬合金、钴铬合金、PEEK 和高密度聚合物以及铸造和 CAD-CAM 修复体进行了比较。这些研究使用扫描电子显微镜、单螺钉测试、数字或光学显微镜、3D 虚拟评估和复制技术来分析修复体的不匹配。有 6 项研究显示 Y-TZP CAD-CAM 修复体与对照组之间的不匹配相似。有 3 项研究显示 Y-TZP CAD-CAM 修复体的不匹配较高，而有 2 项研究报告 Y-TZP CAD-CAM 种植体支持的修复体与对照组相比不匹配较低。Y-TZP CAD-CAM 种植体支持的修复体与其他种植体支持的修复体具有相似的不匹配。然而，由于纳入研究的方法学存在异质性，因此在综述研究中评估的框架的整体数值不匹配仍存在争议。
