摘要
目的:比较生理性支抗控制(PASS)矫治器与MBT自锁矫治器用于治疗中度拥挤的安氏Ⅰ类拔牙病例的临床效果。方法:选择53例牙列中度拥挤需拔牙矫治的安氏Ⅰ类病例。随机分成两组,PASS组使用PASS矫治器进行治疗,MBT自锁组使用MBT自锁矫治器进行治疗。治疗前后均拍摄头颅侧位片,通过头影测量分析评价疗效差异。结果:与MBT自锁组比,PASS组平均治疗时间、前颅底平面-上齿槽座点角(SNA),前颅底平面-下齿槽座点角(SNB),上齿槽座点-鼻根点-下齿槽座点角(ANB),下颌平面-前颅底平面角(MP-SN)间差异均无统计学意义(P>0.05);PASS组上中切牙长轴与蝶鞍点-鼻根点连线交角(U1-SN)、下中切牙长轴与下颌平面的交角(L1-MP)、上中切牙长轴与上齿槽座点-鼻根点连线交角(U1-NA)、下中切牙长轴与下齿槽座点-鼻根点连线交角(L1-NA)和U1-NA、L1-NA距离均显著降低(P<0.05);鼻唇角明显增大,上唇突点至E线距离(UL-E line),下唇突点至E线距离(LL-E line)显著缩小(P<0.05)。结论:在安氏Ⅰ类中度拥挤病例的拔牙矫治中,PASS矫治器可获得更好支抗控制,实现更多的前牙内收和侧貌改善。
Objective:To compare the clinical effects of physiological anchorage control(PASS)appliance and MBT self-locking appliance in the treatment of moderately crowded class I extraction cases.Methods:53 cases of Angle I with moderate crowded dentition requiring extraction were selected.PASS group was treated with PASS appliance and MBT self-locking appliance was treated with MBT self-locking appliance.Lateral cephalometric films were taken before and after treatment,and the difference of curative effect was evaluated by cephalometric analysis.Results:Compared with the MBT self-locking group,the average treatment time of the PASS group,the anterior skull base plane-upper sulcus seat angle(SNA),the anterior skull base plane-lower sulcus seat angle(SNB),the upper coronal seat point-nose root point-lower alveolar seat angle(ANB),mandibular plane-anterior skull base plane angle(MP-SN)of the PASS group showed no significant change(P>0.05);the long axis of the upper central incisor and the angle of the saddle point-nasal root point(U1-SN),the angle of the long central incisor with the mandibular plane(L1-MP),upper middle incisor Long axis and upper coronal seat-nose root point line intersection angle(U1-NA),lower middle incisor long axis and lower alveolar seat point-nose root point line intersection angle(L1-NA)and U1-NA,L1-NA distance of the PASS group was significantly lower(P<0.05);the anterior lower angle of the longitudinal axis of the maxillary first molar and the vertical plane of the PM plane(U6/PM),and the anterior lower angle of the longitudinal axis of the maxillary first molar and the PP plane(U6/PP)increased,the distance from the mid-abdominal first molar to the PM plane(U6-PM),and the distance from the mesial apical apex of the maxillary first molar to the PM plane(U6R-PM)reduced(P<0.05);the nasolabial angle increased,the upper lip point to the E-line distance(UL-E line),and the lower lip point to the E-line distance(LL-E line)reduced(P<0.05).Conclusion:PASS appliance can achieve better anchorage control and m
作者
徐琛
王斌
吴建华
XU Chen;WANG Bin;WU Jianhua(Hefei Dental Clinical College,Anhui Medical University,Anhui Hefei 230001,China)
出处
《河北医学》
CAS
2019年第9期1535-1539,共5页
Hebei Medicine
基金
合肥市自主创新政策“借转补”资金项目,(编号:YW201710120006)
