high pull headgear 高拉式面弓 ; 牵引头帽
high-pull headgear 高位牵引头帽
Reverse pull headgear 前方牵引器
cervical pull headgear 口外弓颈牵引
headgear pull 头帽牵引
Object To evaluate the effects of class II malocclusion treated with MBT technique with high pull headgear J hook.
目的：评价标准方丝弓配合高位J钩对正畸治疗中牙根吸收的影响。
PURPOSE: The purpose of this study was to evaluate the effect of high pull J hook headgear(HPHG) on root resorption of maxillary incisors during orthodontic treatment.
目的：评价标准方丝弓配合高位J钩对正畸治疗中牙根吸收的影响。
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