Doctoral Student, Department of Prosthodontics, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR of China.
Clinical Resident, Department of Prosthodontics, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR of China.
Implant Dent. 2019 Aug;28(4):378-387. doi: 10.1097/ID.0000000000000900.
The purpose of this systematic review was to identify and summarize clinical studies related to the fracture of zirconia abutments in implant treatments.
Medline, Embase, and Cochrane library searches were performed and complemented by manual searches from database inception to February 11, 2018, for title and abstract analysis.
Initially, 645 articles were obtained through database searches. Fifty-three articles were selected for full-text analysis, and 15 studies met the inclusion criteria. The selected studies were analyzed regarding fracture rate, abutment-implant connection, time point of fracture, location of critical crack, causes, managements, and preventive measures with respect to zirconia abutment fracture.
Lower fracture rates were reported for internal connection with metal component (2-piece) zirconia abutments compared with external and internal full-zirconia connection (one-piece) zirconia abutments. Overpreparation and overload should be avoided in case of zirconia abutments.
本系统评价旨在识别和总结与种植体治疗中氧化锆基台骨折相关的临床研究。
对 Medline、Embase 和 Cochrane 图书馆进行了检索，并从数据库建立开始到 2018 年 2 月 11 日进行了手动检索，以分析标题和摘要。
最初通过数据库检索获得了 645 篇文章。选择了 53 篇文章进行全文分析，其中 15 项研究符合纳入标准。对选定的研究进行了分析，内容涉及骨折率、基台-种植体连接、骨折时间点、临界裂纹位置、原因、处理以及氧化锆基台骨折的预防措施。
与外部和内部全氧化锆连接（一体式）氧化锆基台相比，具有金属部件（两件式）氧化锆基台的内连接报告的骨折率较低。在使用氧化锆基台时，应避免过度预备和过载。
