García-González Marta, Blasón-González Sergio, García-García Ismael, Lamela-Rey María Jesús, Fernández-Canteli Alfonso, Álvarez-Arenal Ángel
Department of Prosthodontics and Occlusion, School of Dentistry, University of Oviedo, C/. Catedratico Serrano s/n., 33006 Oviedo, Spain.
Department of Component Safety, Bundesanstalt für Materialforschung und -Prüfung (BAM), Unter den Eichen 87, Germany BAM, 12205 Berlin, Germany.
Biology (Basel). 2020 Oct 31;9(11):372. doi: 10.3390/biology9110372.
Mechanical complications in implant-supported fixed dental prostheses are often related to implant and prosthetic design. Although the current ISO 14801 provides a framework for the evaluation of dental implant mechanical reliability, strict adherence to it may be difficult to achieve due to the large number of test specimens which it requires as well as the fact that it does not offer any probabilistic reference for determining the endurance limit. In order to address these issues, a new software program called ProFatigue is presented as a potentially powerful tool to optimize fatigue testing of implant-supported prostheses. The present work provides a brief description of some concepts such as load, fatigue and stress-number of cycles to failure curves (S-N curves), before subsequently describing the current regulatory situation. After analyzing the two most recent versions of the ISO recommendation (from 2008 and 2016), some limitations inherent to the experimental methods which they propose are highlighted. Finally, the main advantages and instructions for the correct implementation of the ProFatigue free software are given. This software will contribute to improving the performance of fatigue testing in a more accurate and optimized way, helping researchers to gain a better understanding of the behavior of dental implants in this type of mechanical test.
种植体支持的固定义齿的机械并发症通常与种植体和修复体设计有关。尽管现行的ISO 14801为评估牙科种植体的机械可靠性提供了一个框架，但由于其需要大量的测试样本，以及它没有提供任何用于确定疲劳极限的概率参考，因此可能难以严格遵守该标准。为了解决这些问题，提出了一种名为ProFatigue的新软件程序，作为优化种植体支持的修复体疲劳测试的潜在有力工具。本文首先简要介绍了一些概念，如载荷、疲劳和应力-失效循环次数曲线（S-N曲线），随后描述了当前的监管情况。在分析了ISO建议的两个最新版本（2008年和2016年）之后，强调了它们所提出的实验方法固有的一些局限性。最后，给出了ProFatigue免费软件的主要优点和正确使用说明。该软件将有助于以更准确和优化的方式提高疲劳测试的性能，帮助研究人员更好地理解牙科种植体在这类机械测试中的行为。
