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牙瓷可用来制作全冠、固定桥和托牙的人工牙,具有美观、耐磨与不易染色的优点,但脆性大,容易折裂,制作上要求高技术与精密设备。普通牙瓷是一种玻璃状物,具有硅氧基本网状结构,主要成份是长石、石英和高岭土。长石是一种透明原料,可作基质;石英是耐高温物,构成骨架;高岭土具有粘性,起粘接作用。当这些原料加上助熔剂加热到高温时,长石、石英和高岭土熔化烧结成牙瓷坯料,随即投入冷水中裂成碎片,用球磨
Dental porcelain can be used to make full crown, fixed bridge and denture artificial teeth, with the advantages of beautiful, wear-resistant and not easy to stain, but brittle, easy to fracture, the production requires high-tech and precision equipment. Ordinary dental porcelain is a glassy material, with a basic silicon-based network structure, the main ingredient is feldspar, quartz and kaolin. Feldspar is a transparent raw material, can be used as matrix; quartz is high temperature objects, constitute the skeleton; kaolin has a sticky, bonding effect. When these raw materials plus flux heating to high temperatures, feldspar, quartz and kaolin melt sintered into a ceramic blanks, then put into cold water to split into pieces, with a ball mill