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Management of Displaced Maxillary Canines by Extraction of the Primary Canine: Factors Affecting Treatment Outcome

유견치 발치를 통해 변위 상악 견치 치료 시 결과에 영향을 미치는 요인 분석

  • Hanbyeol, Kim (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Hyuntae, Kim (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Ji-Soo, Song (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Teo Jeon, Shin (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Hong-Keun, Hyun (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Young-Jae, Kim (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Jung-Wook, Kim (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Ki-Taeg, Jang (Department of Pediatric Dentistry, School of Dentistry, Seoul National University)
  • 김한별 (서울대학교 치의학대학원 소아치과학교실) ;
  • 김현태 (서울대학교 치의학대학원 소아치과학교실) ;
  • 송지수 (서울대학교 치의학대학원 소아치과학교실) ;
  • 신터전 (서울대학교 치의학대학원 소아치과학교실) ;
  • 현홍근 (서울대학교 치의학대학원 소아치과학교실) ;
  • 김영재 (서울대학교 치의학대학원 소아치과학교실) ;
  • 김정욱 (서울대학교 치의학대학원 소아치과학교실) ;
  • 장기택 (서울대학교 치의학대학원 소아치과학교실)
  • Received : 2022.08.30
  • Accepted : 2022.10.25
  • Published : 2022.11.30

Abstract

The purpose of this study was to evaluate the effect of interceptive primary canine extraction in palatally and buccally displaced maxillary permanent canines, and to analyze the clinical and radiographic factors affecting the treatment outcome. 97 maxillary permanent canines from 86 patients whose maxillary permanent canine were in the mesio-occlusal directions and overlapped with the roots of the adjacent teeth were analyzed. In 64 of 97 (66.0%) maxillary permanent canines, the displaced crown was completely deviated from the adjacent lateral incisor root only by extraction of the primary canine. Not only the characteristics of maxillary permanent canines such as bucco-palatal displacement direction, horizontal and vertical position of the crown tip, and presence of apical closure, but also periapical rarefaction on the primary canine and peg-shaped adjacent lateral incisor significantly affected the treatment outcome.

이 연구의 목적은 구개측 및 협측 변위를 보이는 상악 영구 견치에서 차단적 유견치 발치의 효과를 평가하고, 치료 결과에 영향을 미치는 임상적 및 방사선학적 인자를 분석하는 것이다. 상악 영구 견치의 맹출 경로가 근심 및 교합면 방향을 향하면서 치관의 일부가 인접치 치근과 중첩된 것으로 진단된 환자 중 해당 부위의 상악 유견치를 발치한 86명의 환자의 97개의 상악 영구 견치를 연구 대상으로 하였다. 97개의 변위된 상악 영구 견치 중 64개(66.0%)가 유견치 발치만으로 인접 측절치 치근에서 완전히 벗어났다. 상악 영구 견치의 협-구개측 변위 방향, 치관첨의 수평 및 수직적 위치, 치근단 폐쇄 여부, 유견치의 치근단 방사선투과상 여부, 인접 측절치의 쐐기모양 여부가 치료 결과에 유의미한 영향을 미쳤다.

Keywords

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