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  • Title: Maxillary deficiency treatment by fixed tongue appliance--a case report.
    Author: Showkatbakhsh R, Jamilian A, Ghassemi M, Ghassemi A, Shayan A.
    Journal: Int J Orthod Milwaukee; 2013; 24(3):31-4. PubMed ID: 24358655.
    Abstract:
    This case illustrates orthopaedic treatment of a 12.1-year-old girl with class III malocclusion and maxillary deficiency. The patient was treated by a fixed tongue appliance in the upper jaw. First maxillary molars and premolars were banded and a hyrax was mounted on them in order to achieve lateral expansion. A fixed tongue appliance comprising of a few cribs was soldered to the anterior side of the hyrax with the purpose of pushing the maxilla in forward position. The orthopaedic stage of treatment lasted for 5 months after which favourable correction of the malocclusion was observed. The SNA angle increased by 2 degrees, the IMPA decreased by 10 degrees and mandibular plane angle (GoGn-SN) increased by 20. After this time, the fixed tongue appliance and Hyrax remained in the mouth for 3 more months as retention. This case demonstrates that fixed tongue appliance might be an alternative method to extra oral appliances in class III and maxillary deficient cases.
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