用扫描电镜直接观察及硅橡胶一环氧树脂扫描电镜复型技术观察银汞合金、ＥＢ复合树脂、玻璃离子粘固粉体外充填与釉质、牙骨／本质壁的边缘密合度。结果表明，与牙体组织呈化学性结合的玻璃离子粘固粉与釉质、牙骨／本质壁的密合度好，两壁之间无差别；ＥＢ复合树脂与釉质壁的边缘密合度与玻璃离子粘固粉相似，其缝隙明显小于牙骨／本质壁；银汞合金与釉质壁、牙骨／本质壁的边缘密合度差，且两壁之间无明显差别。 The edge adhesion of the amalgam, EB composite resin and glass ionomer cement to enamel and the bone / essential wall were observed by scanning electron microscopy and silicone rubber-epoxy scanning electron microscopy. The results showed that the adhesiveness between glass ionomer cement and enamel and dental cement / essential wall was good and there was no difference between the two walls. The edge adhesion between EB composite resin and enamel wall was similar to that of glass ion Cement powder is similar, the gap is significantly less than the bone / essential wall; silver amalgam and enamel wall, the edge of the bone / essential wall adhesion is poor, and no significant difference between the two walls.