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얼굴의 수직성장을 이용하여 III급 부정교합을 치료하는 구강내 가철식 장치의 치료기간분석

Analysis of Treatment Period on the Intraoral Removable Appliance Utilizing Vertical Facial Growth on Class III Malocclusion

  • 송지혜 (연세대학교 치과대학 소아치과학교실) ;
  • 김성오 (연세대학교 치과대학 소아치과학교실) ;
  • 송제선 (연세대학교 치과대학 소아치과학교실) ;
  • 이제호 (연세대학교 치과대학 소아치과학교실) ;
  • 최형준 (연세대학교 치과대학 소아치과학교실)
  • Song, Jihyeo (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Kim, Seong-Oh (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Song, Je Seon (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Lee, Jaeho (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Choi, Hyung-jun (Department of Pediatric Dentistry, College of Dentistry, Yonsei University)
  • 투고 : 2018.10.05
  • 심사 : 2018.11.08
  • 발행 : 2019.05.31

초록

본 연구의 목적은 혼합치열기 초기에 III급 부정교합을 보이는 어린이에서 수직성장을 유도하는 III급 고무줄을 걸 수있도록 고안된 구강내 가철식장치를 사용하여 반대교합을 치료시, 그 구체적인 치료기간을 알아보고, 이에 영향을 주는 변수를 확인하는 것이다. 본 소아치과에 III급 부정교합을 주소로 내원하여 구강내 가철식 장치로 치료를 완료한 56명의 환자를 대상으로 치료개시 연령, 치료기간 및 치료유형, 수평피개량, 수직피개량 등의 자료를 수집하였다. 환자군의 교정개시 연령은 8.75세이었고, 교합이 넘어갈때까지 3.31개월, 이후 정상 피개까지 1.90개월이 소요되어, 대부분이 개시 6개월 이내에 개선되었다. 전체 치료기간은 21.79개월이었고 환자의 협조도(p = 0.000)와 고정식 교정장치의 여부(p = 0.032)가 치료기간에 유의하게 영향을 주었다. 결론적으로 본 연구의 가철식장치는 수년간 장시간 장착하며 악정형력을 주는 구강외 장치에 비해서 그 치료기간이 6개월 이내로 짧으며, 혼합치열기 III급 부정교합 어린이에서 효과적으로 이용할 수 있다.

Vertical facial growth triggers the rotation of mandible to move the chin point to the downward and backward direction, which showed remarkably effective result making the less prominent chin. Recently, the intraoral removable appliance utilizing class III elastic demonstrated the vertical growth trigger mechanism. The treatment change was very fast and wearing was quite easy, compared to extraoral appliances. The purpose of this study was to verify the duration of the treatment on class III malocclusion using intraoral removable appliances, which designed to accelerate vertical facial growth. 56 patients were selected with the complaint of the protruded mandible and class III malocclusion (overjet : -3 - 0 mm, overbite : 0 - 4 mm). Information like; age at start, duration of the treatment events, type of the treatment, overjet, overbite etc. was collected and calculated. The average age of the patients delivering the initial brace was $8.75{\pm}1.10year$. Most of the anterior crossbite was resolved within 6 months. The total treatment period was $21.79{\pm}10.73months$ with the additional procedures like the alignment of anterior teeth and torque control using additional removable and fixed orthodontic appliances. The correlation study showed that patient's cooperation (p = 0.000) and the use of fixed appliance (p = 0.032) were significantly influenced on treatment duration.

키워드

참고문헌

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