›› 2016, Vol. 36 ›› Issue (3): 281-284.

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The center of resistance of maxillary anterior teeth and its clinical implication

  

  • Received:2015-08-07 Revised:2015-09-08 Online:2016-03-28 Published:2016-03-22

Abstract: In premolar extraction orthodontic cases, four incisors or six anterior teeth are usually retracted en masse. The torque and vertical control of maxillary anterior teeth is the key to success. The center of resistance (CR) is an important biomechanical factor that determines the mode of orthodontic tooth movement. If a force is applied with a line of action passing through the CR of maxillary anterior teeth, the anterior teeth will undergo bodily movement. Otherwise, inclination movement will occur. This review discussed the factors affecting the position of CR of maxillary anterior teeth and the clinical related implications.

Key words: center of resistance, maxillary anterior teeth, orthodontic tooth movement, finite element analysis

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