权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Development of new dental Ceramic corermy natural tooth Color

新型牙科陶瓷cordermy天然牙色的开发

基本信息

批准号：
10044315
负责人：
ISHIBASHI Kanji
金额：
$ 3.39万
依托单位：
Iwate Medical University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10044315/
关键词：
Natural Tooth Color Shade Guide CCM : Computer Color Matching CCS : Computer Color Searching Color Order 歯科用セラミック視感色濃度測色セラミック色調天然歯

项目摘要

Natural tooth color is affected by the ethnic background, age, gender and bleaching experience and indicates a huge color space. The purpose of this study to develop the new objective color order that is required for reproducing natural tooth color on the ceramic crown.First of all, we measured upper central incisors of 500 subjects including four ethnic backgrounds ; Caucasian, Hispanic, Afro-American and Asian using a spectrophotometer, and defined the color space of natural tooth. Second, we clarified the necessary shade tabs (CCS tab) out of 90 pieces of the conventional shade guides by two methods of visual evaluation and computerized evaluation (CCS : Computer Color Searching). Then, the color discrepancy between shade guides and natural tooth was indicated. CCM tabs were made for the tooth color that was not covered by the conventional shade guides. Color depth that is the single index representing the color was calculated for 52 kinds of shade tabs consisting of 36 kinds of CCS tabs and 16 kinds of CCM tabs, and these shade tabs were numbered according to the value of color depth. This color order consisting of 52 kinds of shade tabs covering natural tooth color is the newly developed color order that makes it possible to evaluate the natural tooth color objectively.Base on the results of this study, it could be said that methodology combined with three procedures of the tooth color measurement, CCS ; Computer Color Searching and CCM ; Computer Color Searching, is the new color reproducing methodology for the natural tooth color.

天然牙色受民族背景、年龄、性别和漂白经历的影响，显示出巨大的色彩空间。本研究的目的是开发一种新的客观色序，用于在陶瓷冠上再现牙齿的自然颜色。首先，我们测量了四个种族背景的500名受试者的上中门牙；白种人、西班牙人、非洲裔美国人和亚洲人使用分光光度计，并定义了天然牙齿的颜色空间。其次，我们通过视觉评价和计算机评价（CCS: Computer Color Searching）两种方法，明确了90条常规色度指南中需要的色度标签（CCS标签）。然后，指出阴影导线与自然牙的颜色差异。CCM标签是为传统的阴影指南没有覆盖的牙齿颜色制作的。计算了52种色度标签，其中36种CCS标签和16种CCM标签，颜色深度是代表颜色的单一指标，并根据颜色深度的值对这些色度标签进行编号。这是一种由52种覆盖牙齿自然颜色的色卡组成的新开发的颜色顺序，可以客观地评价牙齿的自然颜色。根据本研究的结果，可以说，方法结合三个程序的牙齿颜色测量，CCS；计算机颜色搜索与CCM；计算机颜色检索是一种新的牙齿自然颜色再现方法。