This case report provided the non-retentive telescopic denture treatment for severe attritted dentition due to parafunctional habits of bruxism and loss of posterior teeth support.

• 本病例讨论对于因磨牙与后牙丧失而造成之严重磨耗齿列，以双重冠义齿的治疗方式提高咬合高度并恢复齿列外观。