全瓷材料可以提高前牙修复体的自然、逼真效果,它克服了金瓷修复体不透光、颈缘效果差的缺点。但全瓷材料的挠曲性能低,且不能承受过大的抬力,因此仅限于一个单位的修复。最近一种新的全瓷材料(IPS Empress2)由于强度高,可用于前牙多个单位桥的修复,它具有极好的美观性能,高度半透明,边缘完整,它的可蚀刻性增加了与牙齿的粘接, All-ceramic materials can improve the natural, lifelike effect of the anterior teeth prosthesis, which overcomes the shortcomings of opaque porcelain restorations and poor cervical margin. All-ceramic materials, however, have low flexural properties and can not withstand excessive lifting forces and are therefore limited to one unit of repair. Recently a new all-ceramic material (IPS Empress2) due to high strength, can be used for the repair of multiple unit bridges of the anterior teeth, it has excellent aesthetics, highly translucent, complete edges, its erodibility increases and Teeth bonding,