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复合树脂修复材料的进展对牙科临床起了很大作用。它与酸蚀技术协同使用,已成为修复折断切牙及后牙ⅠⅡ类洞型修补的普及材料。前后牙的修复都需要足够的耐磨性及边缘抗折强度。复合树脂的耐磨性的评价正日益受到人们的注意,然而目前尚未找到一种测定边缘抗折强度的有效办法。本文介绍了一种磨耗实验用于测定修复材料的边缘抗折强度。此实验的作法是先将每种实验材料制备五个标本(6×6×3mm),将其置于干燥器中,直至达到
Advances in composite resin repair materials have played a significant role in dental practice. It is used in conjunction with acid etching technology, has become the repair of broken incisors and posterior teeth Ⅰ Ⅱ-type hole-type repair of popular materials. Repair of anterior and posterior teeth require adequate wear resistance and edge strength. The evaluation of the wear resistance of composite resins is gaining more and more attention. However, no effective method for determining the edge flexural strength has been found yet. This article describes a wear test used to determine the edge of the repair material flexural strength. In this experiment, five specimens (6 × 6 × 3 mm) were prepared for each experimental material and placed in a desiccator until it reached