Int J Stomatol

Inter J Stomatol ›› 2007, Vol. 34 ›› Issue (04): 245-246.

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Correction of A ngle C lass Ⅱ m alocclusion with J-hook headgear

WU Li-qing.   

  1. Dept. of Stom atology, The First A ffiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
  • Online:2007-07-20 Published:2007-07-20

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Abstract:

Objective To investigate the clinic effects and reliability of J-hook headgear with extraoral anchorage to push m olars backward. M ethods J-hook headgear was used as auxiliary device to correct A ngle Class Ⅱ m alocclusion for m ixed dentition at advanced stage or perm anent dentition at initial stage during growth spurt period. R esults The average adding interdental space at m olars was 4.75 m m , which m ade the crowding anterior teeth could be corrected, and the patients got Class Ⅰocclusal relationship, with the result that teeth extraction could be avoided. C onclusion J-hook headgear with edgewise appliance is one of convenient m ethods to correct A ngle Class Ⅱ m alocclusion without extracting teeth.

Key words: J-hook headgear, Angle Class Ⅱ malocclusion, orthodontic treatment


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