The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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Upper and lower second premolar extraction treatment case - Treatment strategy for Class III borderline cases

상하악 제2소구치 발거 치료 증례 - III급 부정교합 경계증례의 치료전략

  • Kim, Tae-Kyung (Department of Orthodontics, College of Dentistry, Seoul National University) ;
  • Kim, Jong-Tae (Department of Orthodontics, College of Dentistry, Seoul National University) ;
  • Yang, Won-Sik (Department of Orthodontics, College of Dentistry, Seoul National University)
  • 김태경 (서울대학교 치과대학 교정학교실) ;
  • 김종태 (서울대학교 치과대학 교정학교실) ;
  • 양원식 (서울대학교 치과대학 교정학교실)
  • Published : 2002.06.01
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Abstract

When treating borderline cases which have mild crowding, non-extraction treatment may be considered firstly. But crowding may be reappeared by relapse and it may have problems in esthetics and stability. Secondarily four first premolar extraction treatment may be considered. But this may cause dish-in face by overretracting anterior teeth. In this cases, extraction of four second premolar is preferred because this resolves crowding without aggravating profile and has good stability after treatment. So we review cases treated by four second premolar extraction which show good treatment results and stability. The patients had good profile, Class I molar relationship, mild crowding and skeletal discrepancy and their growth had almost completed.

경미한 총생이 있는 경계증례를 치료할 때 비발치로 치료계획을 세우면 심미성과 안정성이 문제될 뿐 아니라 치료 후의 재발이 우려되며, 상하악 제1소구치를 발거하게 되면 전치부의 과도한 후방견인으로 인하여 dish-in face를 초래할 수 있다. 이런 경우 상하악 제2소구치를 발거하여 교정치료를 시행하면 안모심미성의 훼손없이 총생을 해결하고 치료 후의 안정성에도 좋은 결과를 보여준다 미약한 골격 부조화가 있고 경미한 총생이 있지만, 좋은 안모와 I급 구치관계를 가진 성 장 완료된 환자에서 상하악 제2소구치를 발거, 치료하여 치료결과가 양호하고 성공적으로 유지 된 증례를 살펴보고자 한다.

Keywords

References

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