作者
Reza Goharian, Jalil Ghanbarzadeh, Foozhan Ghorbanian Fard
发表日期
2006/9/23
期刊
Journal of Mashhad Dental School
卷号
30
期号
3, 4
页码范围
301-308
出版商
Mashhad University of Medical Sciences, School of Dentistry
简介
Introduction
Color stability is crucial for the success of any restorative material. Despite composites, color stability of ceromers has not been studied widely. The purpose of this study was evaluation of color stability of one type of ceromers and comparing it with porcelain and composite.
Materials & Methods
In this invitro experimental study, one type of ceromers (targis), a light cured direct composite (tetric ceram) and a porcelain (vita) were chosen. The samples were evaluated in CIELAB color order system by a colorimeter in 3 stages: before UV exposure, after 100 hours UV exposure and after 200 hours UV exposures. l*, a* and b* peculiarities and their changes in examination steps were calculated. The results were analyzed by ANOVA and LSD statistical tests.
Results
The results revealed the porcelain and targis had the highest and lowest color stability after 100 (P=0.05) and 200 (P=0.014) hours periods …
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R Goharian, J Ghanbarzadeh, F Ghorbanian Fard - Journal of Mashhad Dental School, 2006