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随着我国人口老龄化的增加,牙列缺损的患者越来越多,单侧或双侧游离端缺牙的患者,固定义齿修复已受到很大的限制;套筒冠义齿属于固定+活动联合修复形式的一种修复体,它结合了固定及活
With the increase of population aging in our country, there are more and more patients with dentition defect. The prosthesis fixation has been greatly restricted in patients with unilateral or bilateral free end missing teeth. The telescopic denture belongs to the fixed + active joint A form of prosthesis that combines fixation and vitality