华西口腔医学杂志

• 临床研究 • 上一篇    下一篇

Vitapan3D-Master比色板与南京地区人群天然牙色度空间的比较

周小陆 骆小平 刘侠   

  1. 南京大学医学院附属口腔医院修复科, 江苏南京210008
  • 收稿日期:2009-04-25 修回日期:2009-04-25 出版日期:2009-04-20 发布日期:2009-04-20
  • 通讯作者: 周小陆,Tel:025-83620262
  • 作者简介:周小陆(1966-),男,江苏人,副主任医师,硕士

A comparison of color space of Vitapan 3D-Master shade guides to nature teeth from Nanjing population

ZHOU Xiao-lu, LUO Xiao-ping, LIU Xia   

  1. Dept. of Prosthodontics, Stomatological Hospital Affiliated School of Medicine, Nanjing University, Nanjing 210008, China
  • Received:2009-04-25 Revised:2009-04-25 Online:2009-04-20 Published:2009-04-20
  • Contact: ZHOU Xiao-lu,Tel:025-83620262

摘要:

目的研究Vitapan 3D-Master比色板与天然牙在色度空间上的适合性。方法采用CIE L*a*b*色度系统,用ShadeEye NCC测色仪对南京地区居民271人的2 159颗天然牙和Vitapan 3D-Master比色板进行色度值测定,分析天然牙和比色板的色度空间分布,比较二者的适合性。结果1)天然牙比Vitapan 3D-Master比色板色度空间分布区域广,切牙组与比色板的适合性较差,尖牙-前磨牙组适合性较好。2)在色度空间上,切牙色度a*值偏向绿色方向(-a*),比色板色度a*值偏向红色方向(+a*);切牙比色时缺乏L*值为71~78、a*值为-1.5~-0.2色度空间范围内的比色片。3)按照可感知色差阈值△E*ab<1.4的标准,天然牙与Vitapan 3D-Master比色板相比,理论符合率为:切牙组33%,尖牙-前磨牙组50%。结论Vitapan 3D-Master比色板不能满足南京地区居民牙齿临床比色要求。

关键词: 比色板, 颜色, 天然牙

Abstract:

 [ Abstract] Objective To study the fitness of color dimension between Vitapan 3D-Master shade guides and nature teeth. Methods 2 159 nature teeth from Nanjing population and Vitapan 3D -Master shade guides were analyzed by dental chromameter ShadeEye NCC on CIE L*a*b* color system. Results 1)The color dimension of natural teeth displayed a broader range than those from Vitapan 3D-Master shade guides. Comparing with incisor group, canine -premolar group had better fitness with Vitapan 3D-Master shade guides. 2)In color space, incisor values a* shifted toward green(-a*), while the shade guide values a* located toward red(+a*). The shade guide lacked tabs of values L* 71—78 and a* -1.5—-0.2 for natural incisor. 3)According to the perceptibility threshold △E*ab<1.4, the match rates with Vitapan 3D-Master shade guides was 33% in incisor group and 50% in caninepremolar group. Conclusion Vitapan 3D-Master shade guides had inferior match with nature teeth from Nanjing population, especially in incisor.

Key words: shade guide, color, nature teeth