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首页> 外文期刊>The Journal of Prosthetic Dentistry >Wear evaluation of porcelain opposing gold, composite resin, and enamel.
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Wear evaluation of porcelain opposing gold, composite resin, and enamel.

机译：与金，复合树脂和搪瓷相对的瓷器的磨损评估。

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STATEMENT OF PROBLEM: When porcelain surfaces oppose gold and composite resin restorations as well as enamel, wear resistance and abrasiveness of the porcelain are clinical concerns to maintain the occlusal relationship. However, there is limited information on comparison of mutual wear rates when these materials oppose in 2-body and 3-body conditions. PURPOSE: The purpose of this study was to evaluate mutual wear rates of dental porcelain and opposing materials, including a gold alloy, a composite resin, and human enamel, using an in vitro wear test. MATERIAL AND METHODS: Mutual wear between high-fusing dental porcelain (Ceramco II) disks (9 x 5-mm thick) with a rough or smooth surface and opposing styli made of gold alloy, composite resin, or human enamel was evaluated in 2-body and 3-body conditions using a wear simulator (n=8). Wear depths (microm) of porcelain disks were determined using a profilometer. Wear depths (microm) of the opposing materials were obtained by converting the worn surface areas into wear depths using image-analysis software. All data were statistically analyzed by 3-way analysis of variance and Bonferroni-Dunn test (alpha=.05). The worn surfaces were observed by scanning electron microscope (SEM). RESULTS: The wear values for porcelain opposing composite resin or enamel in the 2-body condition were significantly greater than those in the 3-body condition, regardless of the surface condition of the porcelain (P<.001). For stylus specimens, all values in the 2-body condition were significantly greater than those in the 3-body condition, regardless of the surface condition of the opposing porcelain (P<.001). These results are supported by SEM observations of worn surfaces. CONCLUSION: The results of this study suggest that mutual wear rates, when porcelain opposes gold, composite resin, and enamel, are influenced by 2-body and 3-body wear conditions.
机译：问题陈述：当瓷器表面与金和复合树脂修复体以及珐琅质相反时，瓷器的耐磨性和磨蚀性是维持咬合关系的临床考虑因素。但是，当这些材料在2体和3体条件下相对时，相互磨损率比较的信息有限。目的：本研究的目的是使用体外磨损测试评估牙科瓷器和对立材料（包括金合金，复合树脂和人体珐琅质）的相互磨损率。材料与方法：用2-合金评估了表面粗糙或光滑的高熔点牙科瓷（Ceramco II）圆盘（9 x 5毫米厚）与相对的测针之间的相互磨损，该针由金合金，复合树脂或人类瓷釉制成使用磨损模拟器（n = 8）调整身体和三体状况。瓷盘的磨损深度（微米）使用轮廓仪确定。相对材料的磨损深度（微米）是通过使用图像分析软件将磨损的表面积转换为磨损深度而获得的。通过方差的三向分析和Bonferroni-Dunn检验（alpha = .05）对所有数据进行统计分析。通过扫描电子显微镜（SEM）观察磨损的表面。结果：与陶瓷相反的复合树脂或搪瓷在2体状态下的磨损值显着大于3体状态下的磨损值，而不论瓷器的表面状态如何（P <.001）。对于手写笔标本，无论相对瓷器的表面状况如何，在2体状态下的所有值均显着大于3体状态下的值（P <.001）。这些结果得到磨损表面的SEM观察的支持。结论：这项研究的结果表明，当瓷器与金，复合树脂和搪瓷相对时，相互磨损率受2体和3体磨损条件的影响。

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