华西口腔医学杂志

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瓷层厚度对牙龈瓷颜色的影响

孙 俊,罗 云,巢永烈   

  1. 口腔生物医学工程教育部重点实验室,四川大学,四川 成都610041
  • 收稿日期:2005-06-25 修回日期:2005-06-25 出版日期:2005-06-20 发布日期:2005-06-20
  • 通讯作者: 巢永烈,Tel:028-85501441
  • 作者简介:孙 俊(1973-),女,浙江人,讲师,博士
  • 基金资助:

    教育部高等学校博士学科点专项科研基金资助项目 (20020610066)

Effect of Thickness and Shade of Porcelain of Ceramometal Restorations on Color of Gingival Porcelain

SUNJun,LUO Yun,CHAO Yong-lie   

  1. Key.Laboratory of Oral Biomedical Engineering Ministry ofEducation,Sichuan University,Chengdu 610041,China
  • Received:2005-06-25 Revised:2005-06-25 Online:2005-06-20 Published:2005-06-20

摘要: 目的 了解牙龈瓷的颜色再现受瓷层厚度影响的变化规律。方法 采用分光光度计(PR-650)测量不同厚 度Shofu vintage pink龈色瓷,不同厚度牙本质瓷及不同颜色的遮色瓷和牙本质瓷对金瓷试件颜色改变的影响。结果  当Shofu vintage pink龈色瓷厚度从0·3 mm增加到0·9 mm,金瓷试件的L*值不断降低,a*值不断升高;牙本质瓷 厚度的增加使试件颜色向亮度低,偏红方向变化;不同颜色遮色瓷、牙本质瓷层厚度会导致龈色瓷表面的颜色改 变。结论 瓷层厚度可以影响牙龈瓷的颜色再现。

关键词: 瓷, 固定修复体, 颜色

Abstract:

Objective The purpose of this study was to evaluate the color changes of gingival porcelain through varying thick- ness and shade of porcelain of ceramometal restorations.Methods In this study a spectrophotometer (PR-650) was used for col- or analysis. The color changes of dentin porcelain and gingival porcelain with three varied thickness (0·3 mm, 0·6 mm and 0·9 mm) were investigated. In addition, the color variances of Shofu vintage porcelain shade A2, A3and B2were tested.Results  The results showed that decreased L* value of ceramometal restorations and increased a* value were due to the increase of the gingival porcelain thickness, color measurements showed the same trend as the increased dentin porcelain thickness and the opaque and dentin porcelain with different color affected the appearance of gingival porcelain.Conclusion The color of gingival porcelain would be changed with the differences of thickness and shade of porcelain of ceramometal restorations.

Key words: porcelain, fixed restoration, color