lever arm的功能

•1) anterior intrusion (壓低前牙)

•2)posterior tip-back(磨牙後傾)
lever的定義(分成 CLASS I II III 三種)
Distal Movement of Maxillary Molars Using a Lever-arm and Mini-implant System
CONSIDERATIONS FOR THE ORTHODONTIC CORRECTION OF IMPACTED TEETH(內有lever arm的圖)
Bone regeneration by bodily tooth movement:Dental computed tomography examination of a patient
 Clinical evaluation of the centre of resistance of the upper incisors during retraction
The responsibility of the dentist and orthodontistSuccessfully treated symptoms of CMD / Range of success
 The Orthodontic therapy with the Hinge mechanics