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Study of Development of Haze Scale for Tooth Crown

牙冠雾度量表的研制研究

基本信息

批准号：
63570922
负责人：
IBUSUKI Masumi
金额：
$ 1.15万
依托单位：
Showa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1989
项目状态：
已结题

项目摘要

The esthetic acceptance of a restoration, fabricated to replace or restore a missing or diseased tooth, is Influenced by a great many factors, I. e., color and Its elements of hue, value and chroma ; translucency and opacity ; light transmission and scattering ; gloss ; deep components ; surface texture ; metamerism ; and fluorescence.There have been many attempts to reproduce the optical properties of natural teeth. One of the optical properties is luminous transmittance of tooth crown, that is also called translucency or transmission haze. This property can be accurately and meaningfully described, and even more important, it can be analyzed, and the differences between it and another translucency can be understood and specified.There is not yet an acceptable translucent measurement system for teeth. The discrimination of translucency means perception of the difference between two translucent properties. Before the manufacture of a set of the available dental standard translucent guides, the results of the experiments on the discrimination threshold for translucency of tooth crown and individual variation are reported in this study.The subjects were a total of 20 male and female students, oral hygienists and dentists. They were from 18 to 30 years old and had no trichromat. The ability to discriminate haze difference was examined according to the principle of haze comparison by the paired difference test.The following results were obtained :1. Reading average for the actual least perceptible haze difference of subjects was 0.76%. And the greatest and least value were 1.4% and 0.3%.2. In general, the larger the haze difference is, the more easily it can be discriminated, but this was found to be not always the case.

为替换或修复缺失或患病牙齿而制作的修复体的审美接受度受到许多因素的影响，即颜色及其色调、值和色度元素；半透明和不透明；光的传输和散射；光泽;深层成分；表面纹理；条件等色;和荧光。人们曾多次尝试重现天然牙齿的光学特性。光学性质之一是牙冠的透光率，也称为半透明或透光雾。这种特性可以被准确而有意义地描述，更重要的是，它可以被分析，并且它与另一种半透明之间的区别可以被理解和指定。目前还没有一种可接受的牙齿半透明测量系统。对半透明的辨别是指对两种半透明性质之间差异的感知。在制作一套可用的牙科标准半透明导轨之前，本研究报告了牙冠半透明判别阈值和个体差异的实验结果。研究对象包括20名男女学生、口腔保健师和牙医。他们年龄在18到30岁之间，没有三色视。根据雾霾比较原理，采用配对差异检验检验雾霾差异的判别能力。得到了以下结果：1。受试者实际最小可察觉雾霾差异的读数平均值为0.76%。最大值为1.4%，最小值为0.3%。一般来说，雾霾差异越大，越容易被区分，但我们发现情况并非总是如此。