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首页> 外文会议>Conference on Lasers in Dentistry IX Jan 26-27, 2003 San Jose, California, USA >Translucency measurements in teeth and dental materials
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Translucency measurements in teeth and dental materials

机译：牙齿和牙科材料的透明度测量

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摘要

Exact color matching of dental restorative materials to vital teeth is a difficult task for several reasons. These problems will be elaborated upon in the presentation. One of the most important difficulties is that teeth, as well as dental restorative materials, are translucent, and thus the color impression is a product of light scattering, back scattering, transmission, and spectral modifications inside these objects. Classic colorimetry is insufficient to provide an exact color match. Additional information about the translucency factor of the considered object is necessary to provide full reproducibility. In this article, we describe the TransluDent~(TM), a complementary product to ColorDent~(TM), which measures the translucency of teeth and dental materials. TransluDent? determines the translucency by measuring the light transmitted through an object and the light scattered inside of the object. The translucency measurements were performed on two groups of subjects. One group consisted of people in their twenties, and the second group of subjects was in their fifties. For comparison, several sets of dental shade-guides were also tested. The great discrepancy in the translucency factor between human teeth and shade guides available on the market may explain the difficulty in color matching of dental restorative materials to teeth.
机译：出于多种原因，将牙齿修复材料与重要牙齿进行精确的颜色匹配是一项艰巨的任务。这些问题将在演示中进行阐述。最重要的困难之一是牙齿以及牙齿修复材料都是半透明的，因此颜色印象是这些对象内部光散射，反向散射，透射和光谱修改的产物。经典比色法不足以提供精确的颜色匹配。有关所考虑对象的半透明系数的其他信息对于提供完全可重复性是必需的。在本文中，我们介绍了TransluDent〜（TM），它是ColorDent〜（TM）的补充产品，该产品可测量牙齿和牙科材料的透明度。半透明？通过测量透过物体的光和散射在物体内部的光来确定透明度。对两组受试者进行半透明测量。一组是二十多岁的人，第二组是五十多岁的人。为了进行比较，还测试了几套牙科遮光器。人牙齿与市场上出售的阴影导板之间的透明度差异很大，这可能解释了牙齿修复材料与牙齿颜色匹配的困难。

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