中国医学创新Issue(22)：8-10,11,4.DOI:10.3969/j.issn.1674-4985.2014.22.003
快速扩弓结合上颌前方牵引治疗上颌骨发育不足的研究
The Research of Maxillary Protraction Combined with Rapid Maxillary Expansion in Treatment of Maxillary Deficiency
摘要
Abstract
To evaluate the curative effect of maxillary protraction combined with rapid maxillary expansion in treatment of skeletal anterior crossbite.Method:18 skeletal anterior crossbite patients caused by maxillary deficiency from department of orthodontics in our hospital from June 2006 to May 2012 were selected,8 cases were male, 10 cases were female in the late mixed dentition.The age ranged from 8.5 to 13.5 years.The mean age was 10.3 years. For each patient,a lateral cephalogram was taken before treatment(T1),immediately posttreatment(T2)and after an observation period(T3)averaging 6 months.The indices before and after treatment were compared using analysis of variance.Result:All patients were corrected by ClassⅢto ClassⅠ.It showed that immediately posttreatment,the maxilla moved anteriorly a mean of 2.03 mm(P<0.001)and A point increased 0.92 degree(P<0.01).The maxillary teeth moved anteriorly 2.75 mm(P<0.001)and changed 5.01 degree(P<0.01),while the mandible rotated in a downward and backward direction.Long-term,the anterior position of the maxilla was maintained,but some of the ClassⅢcorrection was lost because of mandibular growth.Conclusion:The ClassⅢmalocclusion with a negative overjet of 4 to 5 mm or smaller is close to the successful treatment range.The results show that the dental and skeletal changes are equal.This does not necessarily mean that treatment in children with a negative overjet greater than 5 mm is contraindicated.The effect of maxillary protraction basically stable.The relapse tendency of ClassⅢis mainly due to the further growth of the mandible.关键词
骨性反/头影测量分析/前方牵引/快速扩弓Key words
Skeletal crossbite/Cephalometric analysis/Maxillary protraction/Rapid maxillary expansion引用本文复制引用
乔义强,乔爱莉,李玉如..快速扩弓结合上颌前方牵引治疗上颌骨发育不足的研究[J].中国医学创新,2014,(22):8-10,11,4.基金项目
河南省科技厅攻关项目 （）
