在齿科材料领域中,使用陶瓷材料作为人体假牙已有近百年的历史了,它无论在形态、色泽、机械性能、化学稳定性等方面都优于用其它材料做成的假牙,具有许多无可比拟的优点。但是和天然牙齿相比,目前我们制造的瓷牙还存在着某些不足的地方。如果把人体的自然牙齿和人工制造的陶瓷牙齿同时放在紫外光下,就会发现人体自然牙齿在紫外光线的激发下会发射白一黄色的光,而瓷牙则暗然无光。这说明瓷牙本身不具有发光的性能。这是现在我厂生产制造的瓷牙在光学性能上存在着的一个缺陷。由于这个原因。西德,美国、日本、列支敦士登公国等国家都相继研究和开发了瓷牙的荧光性能,使瓷牙与人体自然牙相比具有更好的逼真效果。所谓荧光,是指当紫外线光照射到某物时,这些物质各射出各种颜色和不同强度的可见光,而当紫外光停止照射时,这种光线也随之很快地消去,这种光 In the field of dental materials, ceramic materials have been used for human dentures for nearly a hundred years. They are superior to dentures made of other materials in terms of morphology, color, mechanical properties, chemical stability, etc., Comparable advantages. However, compared with natural teeth, there are still some shortcomings in the porcelain teeth we manufacture. If the human body's natural teeth and artificial ceramic teeth placed in the UV at the same time, you will find the natural human teeth under the excitation of ultraviolet light will emit a white-yellow light, while the porcelain teeth are dull. This shows that porcelain teeth do not have their own luminous performance. This is a flaw existing in the optical properties of porcelain teeth made in our factory. due to this reason. The fluorescent properties of porcelain teeth have been researched and developed successively by countries such as West Germany, the United States, Japan and the Principality of Liechtenstein, so that the porcelain teeth have a better realistic effect than the natural teeth of the human body. The so-called fluorescence, refers to when the UV light shines on something, these substances each emit a variety of colors and different intensities of visible light, and when the UV light irradiation, the light also will be quickly eliminated, the light