上颌骨半切术后患者的赝复修复,通常采用甲基丙烯酸甲酯塑料制成的硬质中空修复体,其依靠设置于健侧余留牙上的卡环获得固位。在上颌骨半切术后的无牙颌患者,则无基牙可利用,且因可利用大气压力和吸附力产生固位力的上腭面积减小,使修复体很难达到满意 Prosthetic restoration of patients following maxillary hemisection is usually performed using a rigid, hollow prosthesis made of methyl methacrylate plastic that retains its retention by means of a snap ring provided on the contralateral residual tooth. There is no abutment available for edentulous patients after maxillary hemisection, and the reduction in the area of ​​the upper palate that produces retention by atmospheric pressure and adsorption forces makes it difficult to achieve satisfactory restoration