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

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中文摘要：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。

外文摘要：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 .

外文关键词：

Reverse Twin-blockAngle ClassⅢ malocclusionCephalometric

作者：

朱丽亚、黄岩、杨睿

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作者单位：

郑州市第二人民医院口腔科，河南郑州 450052

关键词：

反式Twin-block 安氏Ⅲ类错牙合头影测量

出版年：

2014

DOI：