上海口腔医学

上海口腔医学 ›› 2020, Vol. 29 ›› Issue (2): 133-137.doi: 10.19439/j.sjos.2020.02.005

• 论著 • 上一篇    下一篇

核饰瓷厚度和基底颜色对铸瓷贴面修复四环素牙光学性能的影响

钱慧芬1,2, 林佳儒1, 林云红2, 王维琦1, 李星星1,2   

  1. 1.云南省口腔医学研究所,云南 昆明 650100;
    2.昆明医科大学附属口腔医院 修复科,云南 昆明 650100
  • 收稿日期:2019-02-27 修回日期:2019-05-23 出版日期:2020-04-25 发布日期:2020-04-30
  • 通讯作者: 李星星,E-mail:xingxing2005099@163.com
  • 作者简介:钱慧芬(1993-),女,硕士,住院医师,E-mail:qian99846@sina.com
  • 基金资助:
    云南省医疗卫生单位内设机构科研项目(2016NS114);云南省卫生和计划生育委员会医学后备人才基金资助项目(H-201638)

Effect of porcelain thickness and substrate on optical properties of porcelain veneers for tetracycline stained teeth

QIAN Hui-fen1,2, LIN Jia-ru1, LIN Yun-hong2, WANG Wei-qi1, LI Xing-xing1,2   

  1. 1.Research Institute of Stomatology, Affiliated Stomatological Hospital of Kunming Medical University. Kunming 650100;
    2.Department of Prosthodontics, Affiliated Stomatological Hospital of Kunming Medical University. Kunming 650100, Yunnan Province, China
  • Received:2019-02-27 Revised:2019-05-23 Online:2020-04-25 Published:2020-04-30

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摘要： 目的 分析不同瓷层厚度和变色基底对IPS e.max铸瓷贴面修复四环素牙的色彩学性能和半透性的影响。方法 用热压铸造方法制作IPS e.max LT核瓷,在其表面堆塑体瓷,制作饰/核瓷厚度分别为0.25 mm/0.25 mm、0.50 mm/0.25 mm、0.25 mm/0.50 mm、0.50 mm/0.50 mm、0.25 mm/0.75 mm的铸瓷试件。利用分光光度计测量试件在模拟四环素牙背景及黑白背景下的L*、a*、b*值,计算试件置于模拟四环素牙背景上与背景本身色差ΔE001,及其与试件在白背景上色差ΔE002和半透性参数(TP值)。采用SPSS 17.0软件包对数据进行统计学分析。结果 ΔE001随着核饰瓷厚度增加而增加,但饰瓷厚度为0.50 mm时,核瓷从0.25 mm增加到0.50 mm,ΔE001间无统计学差异(P>0.01)。除浅灰背景外,其余背景下ΔE002随核饰瓷厚度增加而减小,但饰瓷厚度0.25 mm时,核瓷0.50 mm与0.75 mm组间无统计学差异(P>0.01)。不同四环素牙背景下铸瓷试件的ΔE001和ΔE002差异均有统计学意义(P<0.01)。随核饰瓷厚度增加,试件TP值均降低。不同核饰瓷厚度组TP值均有统计学差异(P<0.01)。结论 核饰瓷厚度和四环素牙颜色显著影响IPS e.max LT铸瓷贴面的遮色性能和色彩匹配性;IPS e.max LT铸瓷贴面修复偏黄四环素牙时色彩性能最优,修复浅灰四环素牙时色彩匹配性最差。核饰瓷厚度显著影响IPS e.max LT铸瓷贴面的半透性。

关键词: 瓷贴面, 四环素牙, 色彩, 半透性, 厚度

Abstract: PURPOSE: To analyze the effect of porcelain layer thicknesses and substrates on color properties and translucency of IPS e.max LT porcelain laminate veneers used to restore tetracycline stained teeth. METHODS: Porcelain specimens with different core and veneer thickness (veneer/core thickness: 0.25 mm/0.25 mm, 0.50 mm/0.25 mm, 0.25 mm/0.50 mm, 0.50 mm/0.50 mm, and 0.25 mm/0.75 mm) were fabricated by heat-press layering technique. CIE L*a*b* parameters were measured under simulated tetracycline backgrounds and black and white backgrounds by a spectrophotometer, color differences ΔE001 between specimens on simulated tetracycline backgrounds and backgrounds themselves and ΔE002 between specimens on simulated tetracycline backgrounds and white background were calculated. The translucent parameter(TP) was also calculated. The data were submitted to statistical analysis with SPSS 17.0 software package. RESULTS: ΔE001 increased with increase of thickness of the core and veneer layer, but there was no significant difference between 0.25 mm and 0.50 mm core thickness groups with 0.50 mm veneer in thickness (P>0.01). Except for light grey, ΔE002 decreased over other substrates with increase of thickness of the core and veneer layer, but there was no significant difference between 0.50 mm and 0.75 mm core thickness groups with 0.25 mm veneer in thickness (P>0.01). Both ΔE001 and ΔE002 were significantly different over different substrates(P<0.01). TP decreased as the increase of core and veneer thickness and TP was significantly different with different core and veneer thickness(P<0.01). CONCLUSIONS: Both the core/veneer thickness and the substrate have significant influence on color matching and masking ability of IPS e.max LT porcelain laminate veneers used to restore tetracycline stained teeth. As for IPS e.max LT porcelain veneers, the color property was the best when yellowish tetracycline stained teeth were restored, while the light grey was worst. The thickness of core and veneer has significant influence on the translucency of porcelain laminate veneers.

Key words: Porcelain laminate veneer, Tetracycline stained teeth, Color, Translucency, Thickness

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