改良牙冠延长术与正畸牵引加牙冠延长术对上前牙复杂根折治疗效果的比较

目的 比较改良牙冠延长术与正畸牵引+牙冠延长术对上前牙复杂根折的治疗效果.方法 选取60颗牙体缺损达龈下4.Omm以上的具有保留价值的上颌前牙,随机均分为两组,每组30颗患牙,分别采用改良牙冠延长术和正畸牵引+牙冠延长术,分别记录术前、术后一周及修复后6个月的牙周探诊深度(PD)、龈沟出血指数(SBI)、牙齿松动度(T...

Comparison of treatment effects of modified crown lengthening surgery and orthodontic traction with crown lengthening surgery on the maxillary anterior teeth complex root fracture

Objective To compare the effects of modified crown lengthening surgery and orthodontic traction with crown lengthening surgery on the maxillary anterior teeth complex root fracture.Methods Sixty maxillary anterior complicated root fracture teeth with from the lowest site tooth defect to the gingival margin >4.0mm, which can be preserved, were selected and respectively divided into two groups, and each group have 30 tooth. The modified crown lengthening surgery and orthodontics traction with crown lengthening surgery was used in the two groups respectively. The probing depth (PD), sulcus bleeding index (SBI), tooth mobility (TM) were recorded before operation, at 7 day after operation and on six month after restoration of tooth.Results PD, SBI were decreased significantly at 7 day after operation and on six month after restoration in the two groups (P<0.05). There was no significant difference in comparison between groups (P>0.05).Conclusion Good effect was obtained in using the both two methods on the maxillary anterior teeth complex root fracture.