粘接材料对渗透铝瓷全瓷修复体颜色的影响

目的 探讨不同粘接材料对渗透铝瓷全瓷修复体颜色的影响。方法 制作12个A2色直径12.5 mm、底层厚度0.5 mm的GI－Ⅱ渗透铝瓷试件，在其上烧结A2色1.0 mm厚的Vitadur α饰面瓷完成渗透铝全瓷试件，并制作12个直径12.5 mm、厚2 mm的铸造Ni-Cr合金背景试件。将全瓷试件和背景试件分别用树脂粘接剂、玻璃离子粘固粉、磷酸锌粘固粉粘接，根据粘接材料的不同分为3组，每组4个。用JY9800型白度色度计测量各组粘接前、后的L*、a*、b*颜色参数。结果 粘接材料对全瓷修复体的最终颜色有一定的影响，其中树脂对修复体的颜色影响最小，磷酸锌粘固粉的影响最大，其粘接前后的色差可肉眼分辨。结论 全瓷修复体的粘接推荐使用树脂粘接剂，以减小粘接材料对全瓷修复体最终颜色的影响。

Influence of Adhesion on the Color of Glass Infiltrated Alumina Ceramic Restorations

OBJECTIVE: To investigate the effects of luting agent on the final color of glass infiltrated alumina ceramic restorations. METHODS: 12 plate-shaped specimens with 12.5 mm in diameter and 0.5 mm thickness were fabricated from GI-II (color IG2). Vitadur alpha veneering porcelain (color A2) with 1.0 mm thickness was fired to GI- II glass/alumina composite. 12 plate-shaped background specimens simulating the metal alloy post-and-core 12.5 mm in diameter and 2 mm thickness were also made from Ni-Cr alloy. All-ceramic specimens were luted to the metal alloy by Zinc Phosphate cement, glass ionomer cement and composite resin. The color shifts of the specimens were measured by colorimeter. RESULTS: Luting agents had effect on the final color of restorations. The influence of composite resin was least, followed by glass ionomer cement and Zinc Phosphate cement. The color difference between with and without Zinc Phosphate cement could be identified by the eye. CONCLUSION: To reduce the effect of luting agents, composite resin is recommended to all-ceramic restorations' adhesion.