松风HALO比色板的色度分析

An analysis of the color of Shofu Halo shade guide

目的：研究松风ＨＡＬＯ比色板比色片的颈部、体部、切端部色度分布规律，以利提高临床医师对比色板颜色的判断能力。方法：采用数码摄影和计算机技术对松风ＨＡＬＯ比色板的牙颈部、牙体部、切端部进行测量，根据比色板体部、颈部、切端部的Ｌ＊、ａ＊、ｂ＊、Ｃ＊值分别绘制Ａ、Ｂ、Ｃ、Ｄ、Ｒ、ＶＲ各组色阶的Ｌ－Ｃ曲线及其ａ＊－ｂ＊散点分布图。结果：松风ＨＡＬＯ比色板各组颜色排列具有一定的规律性，随着Ａ、Ｂ、Ｃ、Ｄ、Ｒ、ＶＲ各组比色板色阶的增大，颈部、体部、切端部的Ｌ＊值呈递减趋势，ａ＊、ｂ＊值呈递增趋势。结论：比色板备组颜色排列的序列性，有助于临床医师对比色板颜色的判断。新增加三组根部色和两组偏红色，有利于对牙周病患者和具有偏红色牙齿的比色。

Objctive: The purpose of this study is to reveal the law of color range in Shofu Halo shade guide on part of cervical, body and incisor in beneficial of clinic dentists for analyze shade guide color. Methods: Applying digital-photo and computer to measure cervical, body and incisor of Shofu Halo shade guide, according to L*, a *,b* ,C* of cervical, body and incisor draw each group of A, B, C, D, R, VR color stage and a*-b* scattering-dot range picture. Results: The color range on each group of Shofu Halo shade guide has it's law. L* value of cervical, body and incisor become decrease and a*, b* value become increase generally with the increase of each group guide of color stage number. Conclusions: It is better for clinic dentists to analyze color of shade guide because of the logical arrangement of it. There are advantages in color shade for periodontal patients whose teeth have diffused red color, because of the increased three groups of root color and two groups of diffussed red color.