|
KMID : 0362420070450020191
|
|
Journal of Korean Academy of Prosthodontics
2007 Volume.45 No. 2 p.191 ~ p.202
|
|
|
A STUDY ON THE COLOR STABILITY OF RESIN CEMENTS LUTED FOR PORCELAIN LAMINATE VENEER
|
|
Kim YOung-Woon
Park Sang-Won
Yang Hong-So
Vang Mong-Sook
Park Ha-Ok
|
|
|
Abstract
|
|
|
Statement of problems: Long-term success of esthetic restorations, depends on various factors, especially on color stability of the restorations. The color stability is affected by resin cements beneath the porcelain laminate veneers.
Purpose: The purpose of this study was to comprehend the color stability of resin cements by comparing with 4 different kinds of resin cements (Choice, Variolink II, Nexus 2, Rely-X).
Material and methods: Porcelain laminate disk samples were luted with resin cements. After thermocycling of each 1000, 2000 and 3000 cycle, specimens were measured by spectrophotometers and the color differences were.
Results: 1. After thermocycling of 1000, 2000 and 3000cycle, color difference, ({Delta}E^*) of all specimens were incresed, but were not statiscally significant differences. 2. In the Choice of A1 shade and the Nexus 2 of A3 shade, color difference({Delta}E^*) after thermocycling of 3000cycle was incre^*ased significantly than after thermocycling of 1000cycle. However, other groups did not show any statistically significant differences (P<0.05). 3. After thermocycling of 3000cycle, color difference({Delta}E^*)between A1 shade and A3 shade of Nexus 2 showed statistically significant difference. However no statistically significant differences were observed in other groups (P<0.05). 4. The mean of color difference({Delta}E^*) is 1.0-2.06 after 3000 thermocycling and the data were ranked in the ascending order of Variolink II, Nexus 2, Choice and Rely-X in A1 shade group and Choice, Rely-X, Variolink II and Nexus 2 in A3 shade group.
Conclusion: Above results revealed that, after 3000 thermocycing, the color difference ({Delta}E^*) of experimental resin cements was within clinically acceptable ranges. Color stability of 4 different resin cements was comparatively excellent.
|
|
|
KEYWORD
|
|
|
Color stability, Resin cement, Porcelain laminate veneer, Thermocycling
|
|
|
FullTexts / Linksout information
|
|
  
|
|
|
Listed journal information
|
|
 
|
|