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Facemask Effects in Two Types of Intraoral Appliances : Bonded Expander vs. Hyrax

  • Journal of the Korean academy of pediatric dentistry
  • Abbr : J Korean Acad Pediatr Dent
  • 2015, 42(1), pp.45-52
  • DOI : 10.5933/JKAPD.2015.42.1.45
  • Publisher : The Korean Academy Of Pediatric Dentistry
  • Research Area : Medicine and Pharmacy > Dentistry

박찬영 1 박기태 2

1성균관대학교 의과대학 삼성서울병원 치과진료부 소아치과
2성균관대학교 의과대학 삼성서울병원 소아치과

Accredited

ABSTRACT

The purpose of this study was to compare and evaluate facemask effects when two types of intraoralappliances were used for maxillary protraction for patients with class III malocclusion. Eighteen patients withclass III malocclusion were treated with a facemask for an average of 12 months. Two types of intraoralappliances were used: nine patients were treated with bonded expander (Group 1), and nine patients withHyrax (Group 2). Cephalometric radiographs were taken before and after treatment. Cephalometric radiographswere traced, analyzed, and the results such as sagittal, vertical and soft-tissue changes were compared betweentwo groups. The amount of anchorage loss was also measured to evaluate the difference between two groups. All patients showed significant sagittal skeletal changes after treatment, and there was no statisticallysignificant difference between the two groups. When anchorage loss was evaluated, no differences were shownbetween the two. Facemask with Hyrax or bonded expander is similarly an effective method as a treatment in class IIImalocclusion patients.

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