Results: The clinical observation showed that after 18 months the sandwich restoration was still fit on tooth surface with a perfectly surface and its glass-ionomer combined with the resin tightly.

• 结果:18个月后夹心板修复体表面形态完整无边缘缺损,玻璃离子复合体与复合树脂结合牢固无松动,牙龈组织状况明显优于对照组。