|
KMID : 0362419950330040634
|
|
Journal of Korean Academy of Prosthodontics
1995 Volume.33 No. 4 p.634 ~ p.644
|
|
|
Color differnce of in-cerm by the various postcore materials and coping thickness
|
|
Shim Jig-Hyeon
Vang Mong-Sook
|
|
|
Abstract
|
|
|
|
The purpose of this study is to evaluate the color differences in the In-Ceram according to coping thickness and various abutment core materials ; amalgam, precious alloy, composite resin, non-precious alloy. After the porcelain was built up on the In-Ceram coping at the thickness of 0.3mm and 0.5mm then it was cemented with glass ionomer cement to the post & core materials. The color was measured with a spectrophotometer. @ES The following results were obtained. 1. There were significant differences in the L* values a* and b* values in the cementation of different cores, to the In-Ceram(P<0.01). L* values were not significantly different between the composite resin to the In-Ceram and the a*, b* values were not significantly different between the amalgam and the non-precious alloy. 2. All of cementations of In-Ceram tot the core materisal had color difference(△E*ab) compared to the In-Ceram. In the 0.3mm thickness of the In-Ceram copping non-precious alloy indicated the greatest value, while the composite resin core showed the lowest value with a thickness of 0.5mm In-Ceram copping. 3. By controlloing the In-Ceram coping thickness L* value was significatly different(P<0.01), but not in a* and b* values. 4. In an amalgam, precious & non-pecious alloys there was a 1,74 to 3.06 range color difference in the controlled thickness of In-Ceram coping at the thickness of 0.3mm and 0.5mm. The above results suggest that the requirement of the sufficient thickness of In-Ceram coping and the suitable core material in order to get an estheti restoration by In-Ceram and also to intercept the original core color.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
 
|
|
|
Listed journal information
|
|
 
|