8.Results show that outer enamel of corona dentis has an excellent tribological resistance, and mixed layer between enamel and dentine zone has better abrasive resistance than dentine zone.

• 结果表明牙冠外层的釉质具有优良的摩擦学特性,牙釉质/牙本质交界面的耐磨性稍逊于外层釉质,但明显高于牙本质。