不同高度的牵引钩对前牙移动控制的临床研究

›› 2015, Vol. 35 ›› Issue (11): 964-966.

不同高度的牵引钩对前牙移动控制的临床研究

姚宁¹,高美琴²,顾永佳¹,陆剑锋¹,熊斌¹,王林³

1. 南通市口腔医院
2. 江苏省南通市口腔医院
3. 南京医科大学口腔疾病研究江苏省重点实验室

收稿日期:2015-03-06 修回日期:2015-04-30 出版日期:2015-11-28 发布日期:2015-11-28
通讯作者: 姚宁 E-mail:378477828@qq.com

Clinical study on the control of the anterior teeth movement using different heights of traction hook

Received:2015-03-06 Revised:2015-04-30 Online:2015-11-28 Published:2015-11-28

摘要/Abstract

摘要： ［摘要］目的探讨微种植支抗结合不同高度的牵引钩对前牙移动的影响，为更好地利用微种植支抗辅助内收前牙提供临床基础。方法选择上颌严重前突患者24例，随机分为实验组和对照组，每组12例。采用微种植支抗结合直丝弓技术滑动法内收前牙关闭拔牙间隙；实验组采用2 mm长牵引钩，对照组采用6 mm长牵引钩。内收前牙前后拍摄头颅侧位片进行相关指标的测量分析，配对t检验比较组间差别。结果实验组（2 mm）和对照组（6 mm）拔牙间隙关闭后磨牙均少量前移（0.31 mm），上前牙明显内收且直立，实验组上中切牙呈压入移动趋势（1.82 mm），对照组上中切牙呈伸长移动趋势（-1.05 mm）。结论随着牵引钩高度的增加，上中切牙内收过程中伸长趋势增加，冠舌向倾斜移动减少，临床上可根据不同患者的情况选择合适的牵引钩高度，从而获得较好的治疗效果。

关键词: 微种植钉牵引钩高度直丝弓滑动法

Abstract: Abstract: Objective To study the effects of MIA （miniimplant anchorage）combined with traction hooks with different heights on the movement of anterior teeth in order to better use the MIA in orthodontic treatment.Methods 24 patients with severe maxillary protrusion were randomly divided into experimental group and control group,each containing 12 patients.The patients were treated with MIA and straight wire appliance by sliding mechanics to retract anterior teeth and narrow the extraction space.2 mm hooks in experiment group and 6 mm hooks in control group were used for retraction.Cephalometric radiographs were collected before and after the anterior teeth retraction and ttest was used to analysis the data.Results 0.31 mm maxillary molar mesial movement was observed in both groups and the anterior teeth were retracted effectively and uprighted.In the experiment group,anterior teeth were intruded about 1.82mm,while anterior teeth were protruded about 1.05 mm in the control group.Conclusions As the height of traction hook increased,the elongation tendency of anterior teeth increased during the retraction process,and the lingual movement of the maxillary anterior teeth decreased.In the clinical treatment,the traction hooks with different heights should be used according to the specific malocclusion.

中图分类号:

R783.5

姚宁高美琴顾永佳陆剑锋熊斌王林. 不同高度的牵引钩对前牙移动控制的临床研究[J]. , 2015, 35(11): 964-966.

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