基牙颜色与粘接剂类型对超薄瓷贴面修复体颜色的影响

目的:研究基牙颜色和粘接剂类型对超薄瓷贴面修复体颜色的影响。方法:使用2类6种粘接剂进行研究,酸蚀-冲洗型3种:Ivoclar Syntac? heliobond(SH)、3M Adper^TM Single Bond 2(SB2)、Bisco One-Step Plus(OSP);通用型3种:Ivoclar Tetric? N Bond Universal(TN)、3M Single Bond Universal(SBU)、Bisco ALL-Bond Univeral(ABU)。制备厚度分别为0.3 mm、0.1mm、和2 mm的瓷贴面、水门汀和基牙代型薄片,利用薄片制作超薄瓷贴面修复体试件,模拟临床超薄瓷贴面修复的复合体。树脂代型选择IPS Natural die,颜色为ND1~ND4以模拟不同颜色基牙。使用Vita Easy Shade分光光度计测定各组超薄瓷贴面修复体的颜色并计算色差值。结果:粘接剂种类、基牙代型颜色以及它们的交互作用对超薄瓷贴面修复体颜色变化的ΔE值有显著性影响(P<0.001)。当基牙颜色相同时,OSP与ABU间色差不显著,其余4组间的色差有统计学意义:TN>SH,SBU>SB2(P<0.05);当粘接剂种类相同时,TN组和SBU组不同基牙代型颜色的超薄瓷贴面修复体色差间有显著性差异:TN组:ND2>ND3>ND1>ND4(P<0.05);SBU组:ND1>ND2>ND3>ND4(P<0.05)。结论:粘接剂种类和基牙颜色对超薄瓷贴面修复体的颜色有影响,临床工作中进行超薄瓷贴面修复时,应根据基牙颜色选择适宜的粘接剂进行粘接修复。

Effects of the abutment color and adhesive types on the color of ultra-thin porcelainlaminate veneers

Objective: To evaluate the effects of the abutment color and adhesive types on the color of restorations using ultra-thin porcelain laminate veneers. Methods: Six dental adhesives of two types were selected: 3 of Etch&rinse systems: Ivoclar Syntac? heliobond(SH),3 M Adper^TMSingle Bond 2(SB2),Bisco One-Step Plus(OSP),3 of Universal system: Ivoclar Tetric? N Bond Universal(TN),3 M Single Bond Universal(SBU),and Bisco ALL-Bond Univeral(ABU). The specimens of ultra-thin porcelain laminate veneers with the slices of veneer,cement,adhesive and resin replacement(thickness of 0.3 mm,0.1 mm,0.1 mm,and 2 mm respectively)were prepared. Resin replacements of IPS Natural die from ND1 to ND4 were used to imitate different color of the abutments. The color differences of different ultra-thin porcelain laminate veneers were measured using Vita Easy Shade spectrophotometer and the values of color differences(ΔE)were calculated. Results: The type of adhesives,the abutment colors and their interaction all showed a significant effect on the ΔE values of the specimens of ultra-thin porcelain laminate veneers(P<0.001). When the abutment color was the same,the color differences between OSP and ABU was not significant and there was a significant difference within groups of TN,SH,SBU and SB2: TN > SH,SBU > SB2(P<0.05). When the type of adhesives was the same,the abutment colors of TN and SBU groups showed a significant effect on the color differences of ultra-thin porcelain laminate veneers: ND2 > ND3 > ND1 > ND4 in TN group(P<0.05);and ND1 > ND2 > ND3 > ND4 in SBU group(P<0.05). Conclusions: Both the type of adhesives and the abutment color showed an effect on the color of ultra-thin porcelain laminate veneers. Therefore,dentists should pay attention to the color of abutment and select an optimal dental adhesive when bonding an ultra-thin porcelain laminate veneer in clinic.