不透明牙本质瓷厚度对In-Ceram全瓷修复体颜色影响的实验研究

Study of color between opaque-dentine porcelain and In-Ceram glass/alumina composite

目的:研究不透明牙本质瓷厚度对In-Ceram全瓷修复体颜色的影响,探索In-Ceram全瓷修复体混色的规律,进一步丰富修复色彩学的理论,为临床选色、配色提供实验依据。方法:采用标准D65光源,使用MINOLTACR-321测色仪和DataColorSF300型分光光度仪,观测不透明牙本质瓷不同厚度In-Ceram全瓷修复体的明度、色相、彩度的变化。结果:不透明牙本质瓷厚度控制在0.2～0.4mm时,烧结1.0mm的牙本质瓷,修复体明度值随不透明牙本质瓷厚度的增加而下降,饱和度值和色相角随厚度的增加改变都不大。结论:本研究提示通过改变不透明牙本质瓷能够调节修复体最终的复合颜色。

Objective This study is mainly about the deferent thickness of Opaque-Dentine effects on the color of In-Ceram prosthetics,Helping Further rich the dental color theory、color selecting and color matching.Methods Using MINOLTA CR-321 colorimeter,Data Color SF300 Spectrophotometer and D65 light source to observe the deferent thickness of Opaque-Dentine effects on the color of In-Ceram prosthetics.Results Applied with 1.0mm Dentine,the L values of specimens decreased with the increase of Opaque Dentine from 0.2mm to 0.4mm.The C values and H values of specimens did the same.It can be concluded that the thickness of Dentine can influence the final color.Conclusion It can be concluded that In-Ceram prosthetics can meet the patients＇ color need by regulating the thickness of different kind of porcelain and substrates.