基底颜色对陶瓷层压贴面颜色的影响。

Effect of substrate shades on the color of ceramic laminate veneers.

机构信息

Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, Ohio 43210-1267, USA.

出版信息

J Prosthet Dent. 2011 Sep;106(3):179-83. doi: 10.1016/S0022-3913(11)60117-0.

DOI:10.1016/S0022-3913(11)60117-0

PMID:21889004

Abstract

STATEMENT OF PROBLEM

Ceramic laminate veneers are generally fabricated with varying thicknesses ranging from 0.3 to 1 mm, depending on the need to mask discolored teeth or slightly correct the contour of malpositioned teeth. Clinical color reproduction poses a challenge because of color interaction with the underlying substrate, whether tooth structure or esthetic restorative material.

PURPOSE

The purpose of this in vitro investigation was to measure the effect of color change resulting from applying 2 shades of ceramic material, translucent (T1) and opaque (O2), to 2 shades of composite resin substrate material, light (A3) and dark (C4), on the overall color of ceramic laminates.

MATERIAL AND METHODS

Forty disks were fabricated. Twenty disks (15 × 0.5 mm) were cut from pressed ceramic, 10 disks for each shade (translucent and opaque). Additionally, 20 disks (15 × 4.0 mm) were fabricated from light-polymerized composite resin material, 10 disks for each shade (light and dark). The ceramic disks were bonded to the composite resin disks with clear resin cement. The specimen combinations were divided into 4 groups (n=5). Color measurements were done with a colorimeter (Minolta Chroma Meter CR-200b) configured with diffuse illumination/0-degree viewing geometry. Mean CIE lightness (L*), chroma (C*(ab)), and hue angle (h(ab)) values were obtained. A 2-way analysis of variance (ANOVA) was used to compare the means and standard deviations between the different color combinations (α=.05), followed by Tukey's HSD post hoc test for significant interactions.

RESULTS

The 2-way ANOVA showed significant differences (P<.001) in L*, C*(ab), and h(ab) for a change in the composite resin substrate, regardless of the ceramic material shade. There was significant color change from dark to light substrate (P=.044). The mean h(ab) (SD) of dark substrate/opaque veneer was 89.62 (1.5), while the mean h(ab) of light substrate/translucent veneer was 81.23 (1.7).

CONCLUSIONS

Within the limitations of this study, the selected color of a 0.5 mm ceramic laminate veneer was significantly affected by the change in color of the supporting substrate.

摘要

问题陈述

陶瓷层压贴面通常根据需要制作不同厚度，范围从 0.3 到 1 毫米，以掩饰变色的牙齿或稍微修正错位的牙齿的轮廓。临床颜色再现是一个挑战，因为颜色与底层基底（无论是牙齿结构还是美学修复材料）相互作用。

目的

本体外研究的目的是测量将两种陶瓷材料（半透明（T1）和不透明（O2））应用于两种复合树脂基底材料（浅（A3）和深（C4））的颜色变化对陶瓷层压板整体颜色的影响。

材料和方法

制作了 40 个圆盘。从压制陶瓷中切出 20 个圆盘（15×0.5 毫米），每个色调（半透明和不透明）各 10 个圆盘。此外，还从光聚合复合树脂材料中制作了 20 个圆盘（15×4.0 毫米），每个色调（浅和深）各 10 个圆盘。陶瓷圆盘用透明树脂水泥粘接到复合树脂圆盘上。将标本组合分为 4 组（n=5）。使用分光光度计（Minolta Chroma Meter CR-200b）进行颜色测量，配置漫射照明/0 度观察几何形状。获得平均 CIE 明度（L*）、彩度（C*（ab））和色调角（h*（ab））值。使用双向方差分析（ANOVA）比较不同颜色组合之间的平均值和标准差（α=0.05），然后使用 Tukey 的 HSD 事后检验进行显著交互作用检验。

结果

双向 ANOVA 显示，无论陶瓷材料色调如何，复合树脂基底的变化都会导致 L*、C*（ab）和 h*（ab）显著差异（P<.001）。从深基底到浅基底的颜色变化有显著差异（P=.044）。深基底/不透明贴面的平均 h*（ab）（SD）为 89.62（1.5），而浅基底/半透明贴面的平均 h*（ab）为 81.23（1.7）。