改良“T”型卡腭侧固位修复上颌单侧牙列缺损的临床效果观察

The clinical observation of maxillary unilateral dentition defect by improved “T” clasp of palatal retainer

目的:通过上颌单侧牙列缺损使用改良"T"型卡腭侧固位修复的临床效果观察,探讨上颌单侧牙列缺损可摘局部义齿修复固位的方法。方法:选择上颌单侧牙列缺损的患者28例,其中16例使用改良"T"型卡,即余留上颌双尖牙和磨牙腭侧分别使用独立"T"型卡双臂进倒凹固位;12例使用常规设计,即余留牙颊侧使用三臂卡或连续卡。经2年的随诊观察,对余留基牙和修复体固位情况以及临床效果进行综合评价。结果:28例上颌单侧牙列缺损患者,经2年的随诊观察,改良设计者有1例出现修复体松动;常规设者有4例出现修复体松动。两者差异有统计学意义(P<0.05)。结论:使用改良腭侧"T"型卡,能较好解决上颌单侧牙列缺损修复中出现的固位困难、稳定性差等问题。

Objective：Through the maxillary unilateral dentition defect by using improved T clasp palatal retention for prosthetics of clinical results observation,to explore the method of maxillary unilateral dentition defect with the removable partial denture.Methods：Selecting 28 patients that fitting maxillary unilateral dentition defect,16 patients use improved T clasp,for retention of the maxillary remaining premolar and molar＇s lingual surface,with casting stents of the removable partial denture.Twelve patients use normal design,remaining teeth buccal using three arms clasp or continuous clasp.After two years following observations,to evaluate the clinical results of the remaining abutment and restoration retetion.Results：After two years of following observations,28 patients of maxillary unilateral dentition defect,using improved T clasp with loose retention of one patient＇s restoration,and using normal design with loose retention of 4 patients＇ restoration.Conclusion：Using improved form of palatal T clasp,can better solve the retainer difficult and poor stability problems of maxillary unilateral dentition defect.