最近两个研究对骨性开合(牙一个头影测量的前瞻性研究中,Tran等评价了高位头帽牵引(HPHG)与少量咀嚼鸡能训练的联合治疗对颅面形态改变的影响。
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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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