摘要
目的研究不同厚度3种色调树脂试样与3种底色混色后颜色效果的变化。方法选用A1、A3、C2色调树脂分别制成2.0、1.8、1.6、1.4、1.2、1.0mm试样5个。测色仪测定试样与3种底色材料混色后的L a b值,分析色差。结果当厚度＞1.8mm时,试样在不同底色材料间的色差值△E ab＜1；当厚度≤1.4mm时,部分试样在金属底色与两种树脂底色之间的色差值△E ab＞2.72。结论金属底色对试样表面的混色效果影响较大。使用树脂制作非金属冠修复体时,建议材料厚度应＞1.8mm。
Objective To analyze the final color of Solidex in six thickness interacting with three different backgrounds. Methods Five specimens of Solidex in each shade A1, A3, and C2 were fabricated at thickness of 1.0, 1.2, 1.4, 1.6, 1.8, and 2.0 mm. The CIE L^＊a^＊b^＊ values of specimens were measured using a colorimeter （ShadeEye NCC） to determine the colorimetric difference, when the specimens overlaid on different backgrounds. Results When the thickness was more than 1.8 mm, the color difference （△E ^＊ ab 〈 1 ） was not perceived by human observers. When the thickness was 1.4 mm or less than 1.4 ram, the color difference （ △ E^＊ ab 〉 2.72 ） was considered clinically unacceptable between alloy background and two types of composite resin background. Conclusions Alloy background had more evident influence on the final color of Solidex than composite resin background. When making metal-free crown restoration using Solidex, it was advisable to make the composite resin more than 1.8 mm thick.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2006年第8期492-493,共2页
Chinese Journal of Stomatology
关键词
复合树脂类
牙修复体
颜色
厚度
Composite resins
Dental prosthesis
Color
Thickness
