By acid etching, the enamel was changed into a highly mineralized alveolar coarse surface, which was the key factor for achieve stable and reliable adhesion to resin.

• 牙釉质经酸蚀处理后，形成高度矿化的蜂窝状的粗糙表面，依靠微机械嵌合力与树脂形成稳定可靠的粘结。