A Study of Causes for Removal of Fixed Prostheses and Fate of Abutment

고정성 치과보철물의 제거원인 및 지대치 재사용에 관한 연구

  • Mok, Won-Kyun (Department of Prosthodontics, School of Dentistry, Chosun University) ;
  • Kim, Hee-Jung (Department of Prosthodontics, School of Dentistry, Chosun University) ;
  • Jeong, Chae-Heon (Department of Prosthodontics, School of Dentistry, Chosun University) ;
  • Oh, Sang-Ho (Department of Prosthodontics, School of Dentistry, Chosun University)
  • 목원균 (조선대학교 치과대학 치과보철학교실) ;
  • 김희중 (조선대학교 치과대학 치과보철학교실) ;
  • 정재헌 (조선대학교 치과대학 치과보철학교실) ;
  • 오상호 (조선대학교 치과대학 치과보철학교실)
  • Received : 2008.01.25
  • Accepted : 2008.03.25
  • Published : 2008.03.30


The purpose of this study were to report the reasons for removal of fixed prostheses and survival rate of abutment teeth. A total 192 fixed prostheses removed at Chosun university Dental Hospital and 308 abutment were investigated. The most frequent reason of removal was periodontal problem(30.7%), followed by caries(29.7%), then periapical problem(18.8%) and defective margins(14%). In metal ceramic crown, periodontal problem was the most frequent reason of removal. In complete cast crown, caries was the most frequent reason of removal. Periapical and periodontal problem was the most frequent reason people under forties and over fifties, respectively. Of the 308 abutment teeth, vital and non-vital teeth were 135(43.8%) and 173(56.2%), respectively. Of 135 vital abutment teeth, 39(28.9%) were extracted and of 173 non-vital abutment teeth, 85(49.1%) were extracted. Each risk factor for removal of fixed prostheses and extraction of abutment should be evaluated more clearly for prediction of prognosis of final prostheses and abutment teeth.

이 연구의 목적은 고정성 보철물의 제거와 지대치의 생존율을 위한 원인을 조사하는 것이었다. 총 192개의 고정성 보철물이 조선대 치과병원에서 제거되었고 308개의 지대치가 조사되었다. 제거의 가장 빈번한 이유는 치주 문제였고(30.7%), 그 다음이 우식(29.7%), 그리고 치근단 문제(18.8%) 였다. 금속도재관에서 치주 문제는 가장 빈번한 제거의 원인이었다. 완전주조관에서는 우식이 제거의 가장 흔한 이유였다. 치근단과 치주의 문제는 각각 40대 이하와 50대 이상의 사람들에서 가장 흔한 원인이었다. 308개의 지대치 중 생활치와 실활치는 각각 135(43.8%)와 173(56.2%) 이었다. 135개의 생활치 중에서 39(28.9%)개가 발거되었고, 173개의 실활치 중에서 85(49.1%)개가 발거되었다. 고정성 보철물의 제거와 지대치의 발거를 위한 각각의 위험 요소는 최종 보철물과 지대치의 예상과 진단을 위해 더 명확히 평가되어야만 한다.


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