Abstract
Porcelain laminate veneer restoration method is to restore the tooth color and form attached with porcelain shell. There are many researches for color matching; however, there is no cement research for attachment due to the color change and condition of cement after restored.
The purpose of this experiment is to examine and find the way of color change after laminate veneer restored. Porcelain fused-to-metal crown( VINTGE Hallo : Shofu) A1B, A2B and A3B are used as Crown Porcelain, A3B, A4B, B4B, C3B, D4B are used as Abutment Porcelain in this experiment. Dual cure resin cement( ResiCem: Shofu) was used as in this study. We used three types of color cement( transparent, ivory and opaque), and two conditions( air and water) were control point. After adhesion thickness of cement was 50μm
First examination was evaluate, the influence of the thickness specimen on the color.Second examination was the color and chronological change for resin cement. Final examination was influence of the color of resin on the laminate veneer restoration color between veneer porcelain( 0.6mm thickness) and abutment( 3.0mm thickness).
The followings are the conclusions from this experiment:
1.The color is effected by the thickness of specimen.
2.When the thickness of cement is 1mm, b* has been increased, 7 more days after restored. When the thickness of cement is 50μm , the color is not changed.
3.Two types of cements with color difference 3 have no significant color difference after restored.
4.Since the difference of the color is significant decreased with water between adhesive testing specimens, the color can be predictable before setting.
