摘要
目的探讨应用口外弓或微种植体支抗矫治成年女性安氏Ⅱ类1分错畸形的临床效果。方法20例成年女性安氏Ⅱ类1分类错畸形患者,采用微种植体支抗(种植支抗组)或口外弓支抗(口外支抗组)结合直丝弓技术矫治,每组10例,采用Pancherz分析法进行治疗前后头影测量指标分析。结果矫治后2组上颌基骨位置没有明显变化,下颌均略微前调,差异没有统计学意义;种植支抗组上颌磨牙前移(1.91±0.69)mm,口外支抗组为(2.38±1.08)mm,差异无统计学意义(P>0.05);种植支抗组上颌磨牙压低(0.70±0.71)mm,口外支抗组上颌磨牙伸长(0.88±0.74)mm,差异有统计学意义(P<0.001);种植支抗组下面高减少(1.13±0.93)mm,口外支抗组增加(0.37±1.93)mm(P<0.05);口外支抗组下颌平面角增加(2.18±1.74)°,种植支抗组减小(1.51±2.76)°(P<0.01),种植支抗组上颌磨牙压低后带来了下颌向前向上旋转的改变。两组上颌中切牙都得到内收,并均有压低,差异无统计学意义(P>0.05)。结论种植支抗或传统口外弓支抗均可取得良好的支抗效果,内收上颌前牙,改善磨牙咬合关系,种植支抗在磨牙垂直向控制上更有优势。
Objective To evaluate the efficacy of female adults treated with micro-implant anchorage （MIA） and headgear anchorage （HGA）, both combined with straight wire appliance, in the treatment of class 11 division 1 maloc-clusion patients. Methods The study was performed on 20 selected female adults making use of straight wire appliance with MIA or with HGA. The cephalometric indices were examined before and after treatment using Pancherz analysis method. Results After treatment, there were no significant difference between two groups, such as the position of the maxillary, and tile slightly forward movement of the mandible. The maxillary first mola in MIA group were moved for- ward （ 1.91± 0.69 ） mm, and in the HGA group moved forward （2.38 ± 1.08 ） ram, there were no significant difference （P 〉 0.05）. In the vertical direction, in the MIA group the maxillary first molars wez intruded （0.70 ± 0.71 ） ram, while in the HGA group the maxillary first molars were extruded （0.88 ± 0.74） mm. These differences had statistical significance （ P 〈 0. 001 ）. In M1A group the lower anterior face height reduced（ 1.13 ± 0.93 ） mm, but in the HGA group increased （0.37± 1.93） mm （P 〈0.05）. At the same time, in HGA group mandibular plane angle increased （2.18 ±1. 74）, while in the M1A group mandibular plane angle reduced （1.51 ± 2.76） （P 〈 0.01 ）. The incisors in two groups were retracted and intruded, and these diffeinces had no statistical signifcance （P 〉 0.05 ）. Conclusion Both methods can achieve satisfactory results. Micro-implant anchorage is more effective in controlling Ihe vertical movement of upper molar.
出处
《广东牙病防治》
2013年第4期203-207,共5页
Journal of Dental Prevention and Treatment
