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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >A Comparison of the Microstructure and Properties of the IPS Empress?2 and the IPS Empress? Glass-Ceramics
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A Comparison of the Microstructure and Properties of the IPS Empress?2 and the IPS Empress? Glass-Ceramics

机译：IPS Empress？2和IPS Empress？的微观结构和性能比较玻璃陶瓷

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The aim of this report is to analyze the microstructures of glass-ceramics of the IPS Empress?2 and IPS Empress? systems by scanning electron microscopy. The main properties of the glass-ceramics were determined and compared to each other. The flexural strength of the pressed glass-ceramic (core material) was improved by a factor of more than three for IPS Empress? 2 (lithium disilicate glass-ceramic) in comparison with IPS Empress? (leucite glass-ceramic). For the fracture toughness, the K_(IC) value was measured as 3.3 +- 0.3 MPa centre dot m~(0.5)for IPS Empress?2 and 1.3 +- 0.1 MPa centre dot m~(0.5) for IPS Empress?. Abrasion behavior, chemical durability, and optical properties such as translucency of all glass-ceramics fulfill the dental standards. The authors concluded that IPS Empress?2 can be used to fabricate 3-unit bridges up to the second premolar.
机译：本报告的目的是分析IPS Empress？2和IPS Empress？的玻璃陶瓷的微观结构。系统通过扫描电子显微镜观察。确定了玻璃陶瓷的主要性能并进行了比较。对于IPS Empress ?，压制的玻璃陶瓷（芯材）的抗弯强度提高了三倍以上。 2（二硅酸锂玻璃陶瓷）与IPS Empress的比较？ （白晶玻璃陶瓷）。对于断裂韧性，对于IPS Empress？2而言，K_（IC）值为3.3±0.3 MPa中心点m〜（0.5），对于IPS Empress？而言，为1.3±0.1 MPa中心点m〜（0.5）。所有玻璃陶瓷的耐磨性，化学耐久性和光学特性（如半透明性）均符合牙科标准。作者得出的结论是，IPS Empress？2可用于制造直至第二颗前磨牙的3单元桥。

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