抛光及上釉对氧化锆全冠与釉质间磨耗性能的影响
Effect of polishing and glazing techniques on the wearing of zirconia crown against enamel

摘要： 目的 研究抛光、上釉和抛光后上釉对氧化锆全冠与釉质间表面粗糙度和磨耗性能的影响。方法 将氧化锆全冠试件分为抛光组、上釉组和抛光后上釉组，每组各8个试件。釉质组为对照组。将新鲜拔除的上颌第三磨牙近中颊尖作为对颌牙。用表面粗糙度分析这三种处理方法对氧化锆全冠表面粗糙度的影响。通过磨耗试验观察这三种方法处理后的氧化锆全冠表面对釉质的磨耗。结果 表面粗糙度从小到大为抛光氧化锆全冠、抛光后上釉氧化锆全冠、上釉氧化锆全冠和釉质。对于瓷面而言，抛光氧化锆全冠磨耗最少；对于对颌釉质而言，抛光组釉质磨耗最少。结论 抛光组氧化锆全冠对釉质磨耗最小，氧化锆全冠表面粗糙度可帮助诊断其对对颌釉质的磨耗量。
Abstract: Objective This in vitro study aimed to measure the roughness and wearing of polished, glazed, and polished and then reglazed zirconia against human enamel antagonists. Methods Zirconia specimens were divided into the polished, glazed, and polished and then reglazed groups(n=8). Enamel was used as a control. The mesiobuccal cusps of extracted maxillary third molars were standardized and used as antagonists. The surface roughness of all pretest specimens was measured, and the effects of treated zirconia on the wear property of the enamel were evaluated by a wear test. Results Surface roughness increased in the following order: polished zirconia
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