摘要
目的对比肌激动器和FRⅡ型功能矫治器对青少年高角骨性Ⅱ类错牙合畸形的影响,为临床选择合适治疗方法提供参考。方法选择2013年8月—2015年12月在湖北医药学院附属东风医院口腔正畸科进行治疗的青少年高角骨性Ⅱ类错牙合畸形患者52例,根据随机抽签原则分为观察组与对照组各26例,对照组采用FRⅡ型功能矫治器进行治疗,观察组采用肌激动器进行治疗,矫治观察时间为3个月,观察2组畸形预后情况,统计与计算上下颌骨关系和软组织侧貌改善的定量指标。结果 2组患者经过矫治后,患者的牙齿排列整齐,开口度、开口型正常,无咬合干扰,磨牙和尖牙建立中性关系,上下唇均得到明显回收,侧貌得到明显改善。2组患者矫治后的下牙弓总长度明显高于矫治前(P<0.05),同时观察组矫治后的下牙弓总长度明显高于对照组(P<0.05),2组患者矫治前后的上牙弓总长度组间与组内对比差异均无统计学意义(均P>0.05)。除SNA角无明显改变外(P>0.05),2组患者矫治后的SNB角明显增大,ANB角明显减小,组内与组间对比差异均有统计学意义(均P<0.05)。结论肌激动器和FRⅡ型功能矫治器对青少年高角骨性Ⅱ类错牙合畸形都有很好的矫治效果,特别是肌激动器更加有利于改善上下颌骨关系,促进软组织侧貌改善,有很好的应用价值。
Objective To compare the effects of muscular activator and FR Ⅱ type of functional activator for teenagers＇ high angle skeletal class Ⅱ malocclusion, thus to provide proper reference for clinical choices. Methods Fifty-two teen- agers with high angle skeletal class Ⅱ malocclusion registered in our hospital from August,2013 to December,2015 were selected and randomly divided into observation group and control group, with 26 patients in each group. And the control group was given the FR Ⅱ functional activator treatment, and the observation group was given the activator treatment. After three months of treatment, to observe the prognosis of deformity and to count and calculate the quantitative index of mandi- ble and maxillary positions as well as the soft tissue profiles. Results After the treatment, the teeth arrangement in two groups were in neat rows, meanwhile the opening degree and open type were normal. The molar and the cuspid builds proper relations. The upper and lower lips returned to normal and the facial profiles were improved prominently. The total length of the lower dental arch in the two groups were significantly higher after the treatment （ P 〈 0.05 ） , while the total length of the lower dental arch in the observation group after treatment were significantly higher （ P 〈 0.05 ）. The total length of the upper dental arch compared before and after treatment and within groups were all not statistically significant （P 〉0.05）. Apart from no significant change of SNA angle（P 〉0.05 ） ,the SNB angle of the two groups after treatment were significantly increased, and the ANB angle were significantly reduced. There were statistical significance both within and between the two groups （ P 〈 0.05 ）. Conclusion Muscular activator and FR Ⅱ type of functional activator for teen- agers＇ high angle skeletal class Ⅱ malocclusion have good treatment effects, especially the activator which is more condu- cive to improve relations and promote soft tissue profile improvement. Therefore, it has great application value.
作者
马艳
李金超
施优灵
杨磊
鲍玮玮
曲幸辉
庞光明
MA Yan LI Jin-chao Sill You-ling et al(Department of Orthodontics, Dongfeng Hospital Affiliated to Hubei University of Medicine, Shiyan, Hubei 442000, Chin)
出处
《中华全科医学》
2017年第1期42-44,共3页
Chinese Journal of General Practice
基金
2011年湖北省教育厅基金科研项目(B20112104)
