反式twin-block治疗安氏Ⅲ类错牙合作用机理的研究
Mechanisms of Reverse Twin-block Appliance Therapy on Angle class Ⅲ Malocclusion
朱丽亚 1黄岩 1杨睿1
作者信息
- 1. 郑州市第二人民医院口腔科，河南 郑州 450052
- 折叠
摘要
目的：通过治疗前后X线头颅定位侧位片的头影测量分析，得到反式Twin-block对生长发育期安氏Ⅲ类错（牙合）的治疗原理。方法选择替牙期、恒牙早期安氏Ⅲ类错牙合患者20例（男10例，女10例），平均年龄10岁8个月，全天戴用反式Twin-block矫治器治疗4．5-11个月。分别对治疗前后头颅定位侧位片进行头影测量。结果①上牙弓位置前移，上颌向前发育；②下颌向下后方向旋转；③上下颌牙齿发生代偿性移动。结论反式Twin-block可以有效矫治生长发育期安氏Ⅲ类错牙合，在患者侧面Ⅲ类骨面形得到明显改善的同时，牙齿发生代偿性移动。
Abstract
Objective To assess the effect and mechanism of ClassⅢ malocclusions treatment with reverse Twin -block appliance.Methods Twenty subjects of ClassⅢ malocclusions were included in this study(10male,10 female).All patients were treated for all the day and for total of 4.5-11 months.The cephalometric re-cords of these subjects were examined before and after the treatments.The acquired data were processed with SPSS 10.0.Results①the reverse Twin-block could accel-erate the development of the maxillary bone .② the Mandibular showed a rotation of after the downward direction .③mandible teeth occurring compensatory move on . Conclusion Reverse Twin-block appliance could treat effectively angle classⅢ malocclusions.Patients had a significant improve in side of the form ,while the occur-rence of compensatory tooths movement .
关键词
反式Twin-block/安氏Ⅲ类错牙合/头影测量Key words
Reverse Twin-block/Angle ClassⅢ malocclusion/Cephalometric引用本文复制引用
出版年
2014
NETL
NSTL
万方数据