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.


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