An Analysis of the Post-Crown Restoration of Upper Central Incisor with Surgical Crown Lengthening and Forced Eruption by Three Dimensional Finite Element Method 冠延长术和牙根牵拉术处理上中切牙残根桩冠修复后三维有限元比较分析
Methods: Nine cases of dentigerous cysts with impacted teeth were treated with fixed appliances, surgical exposure, scrape of cyst and orthodontic traction to assist eruption of impacted teeth. 方法:对9颗含牙囊肿内埋伏牙以固定矫治器结合外科开窗、囊肿刮除,正畸牵引导萌进行治疗。
Compared with root extraction, the direct restoration, and the crown lengthening by surgical procedure, the forced eruption is a simple, economical and practical method in clinical. 同拔出残根、直接修复和冠延长术相比,正畸(牙合)向牵引是一种简单、经济、实用的方法,值得在临床上推广。