Faculty of Dentistry, The University of Hong Kong, Hong Kong special administrative region, China.
Clin Implant Dent Relat Res. 2021 Apr;23(2):244-258. doi: 10.1111/cid.12968. Epub 2020 Dec 16.
The fit of implant-supported prostheses is of prime importance for the long-term success of implant therapy.
This systematic review aimed to evaluate recent evidence on current techniques for assessing implant-framework misfit, its associated strain/stress, and whether these misfits are related to mechanical, biological, and clinical consequences.
An electronic search for publications from January 2010 to October 2020 was performed using the Pubmed, Embase, Web of Science, and Cochrane Library databases with combined keywords on implant-framework misfit assessments and related clinical complications. Inclusion and exclusion criteria were applied. After full-text analyses, data extraction was implemented on current techniques of misfit assessment and the relationship between the misfit and the induced strain/stress.
A total of 3 in vivo and 92 in vitro studies were selected, including 47 studies on quantifying the degree of implant-framework misfit with dimensional techniques, 24 studies measuring misfit-induced strain/stress with modeling techniques, and 24 studies using both methods. The technical details, advantages, and limitations of each technique were illustrated. The correlation between the implant-framework misfit and the induced strain/stress has been revealed in vitro, while that with the biological complications and implant/prostheses failure was weak in clinical studies.
Dimensional and modeling techniques are available to measure the implant-framework misfit. The passivity of implant-supported fixed prostheses appeared related to the induced strain/stress, but not the clinical complications. Further studies combining three-dimensional (3D) assessments using dimensional and modeling techniques was needed.
种植体支持的修复体的适配性对于种植体治疗的长期成功至关重要。
本系统评价旨在评估当前评估种植体-基台不匹配及其相关应变/应力的技术的最新证据，以及这些不匹配是否与机械、生物和临床后果有关。
使用 Pubmed、Embase、Web of Science 和 Cochrane Library 数据库进行电子搜索，使用与种植体-基台不匹配评估和相关临床并发症相关的组合关键字，检索 2010 年 1 月至 2020 年 10 月的文献。应用纳入和排除标准。在全文分析后，对不匹配评估的当前技术和不匹配与诱导应变/应力之间的关系进行了数据提取。
共选择了 3 项体内研究和 92 项体外研究，其中 47 项研究使用尺寸技术量化种植体-基台不匹配的程度，24 项研究使用建模技术测量不匹配引起的应变/应力，24 项研究同时使用两种方法。说明了每种技术的技术细节、优点和局限性。体外已经揭示了种植体-基台不匹配与诱导应变/应力之间的相关性，而在临床研究中，与生物并发症和种植体/修复体失败之间的相关性较弱。
尺寸和建模技术可用于测量种植体-基台不匹配。种植体支持的固定修复体的被动性似乎与诱导的应变/应力有关，而与临床并发症无关。需要进一步研究结合使用尺寸和建模技术的三维（3D）评估。
