대한치과보철학회지 (The Journal of Korean Academy of Prosthodontics)

  • 제45권2호
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  • Pages.263-273
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  • 2007
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  • 0301-2875(pISSN)
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  • 2005-3789(eISSN)
대한치과보철학회 (The Korean Academy of Prosthodonitics)
권호 표지

임플랜트로 수복된 하악 구치부에 대합되는 자연치 주변의 골변화

ALVEOLAR BONE CHANGES AROUND THE NATURAL TEETH OPPOSING THE POSTERIOR IMPLANTS IN MANDIBLE

  • 정원모 (강릉대학교 치과대학 보철학교실 및 구강과학연구소) ;
  • 김대곤 (강릉대학교 치과대학 보철학교실 및 구강과학연구소) ;
  • 이양진 (강릉대학교 치과대학 보철학교실 및 구강과학연구소) ;
  • 박찬진 (강릉대학교 치과대학 보철학교실 및 구강과학연구소) ;
  • 조리라 (강릉대학교 치과대학 보철학교실 및 구강과학연구소)
  • Jung, Won-Mo (Dept. of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Kangnung National University) ;
  • Kim, Dae-Gon (Dept. of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Kangnung National University) ;
  • Yi, Yang-Jin (Dept. of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Kangnung National University) ;
  • Park, Chan-Jin (Dept. of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Kangnung National University) ;
  • Cho, Lee-Ra (Dept. of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Kangnung National University)
  • 발행 : 2007.04.30
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초록

Statement of problem: Alteration of tooth function is assumed to be changed by stress/strain on the adjacent alveolar bone, producing changes in morphology similar to those described for other load-bearing bones. When teeth are removed, opposing teeth will not be functioned. When edentulous area is restored by implant prostheses, opposing teeth will be received physiologic mechanical stimuli. Purpose: The aim of this study was to evaluate the bone changes around the teeth opposing implant restoration installed mandibular posterior area. Material and method: Eight patients who had mandibular posterior edentulous area were treated with implants. Radiographs of the opposing teeth were taken at implant prostheses delivery(baseline), 3 months, and 6 months later. Customized film holding device was fabricated to standardize the projection geometry for serial radiographs of opposing teeth. Direct digital image was obtained. Gray values of region of interest at each digital image were measured and compared according to time lapse. Repeated measured analysis of variance and post-hoc Scheffe's test were performed at the 95% significance level. Results: Alveolar bone changes around the natural teeth opposing the posterior implant in mandible showed statistically significant difference compared to control group(P<0.05). And gray values of alveolar bone around the teeth opposing implants were increased. There were no statistically significant differences of alveolar bone changes between crestal group and middle group and between mesial group and distal group according to time lapse(P>0.05). There were no statistically significant differences of alveolar bone changes among mesial-crestal group, mesial-middle group, distal-crestal group, distal-middle group, and control group(P>0.05). Conclusion: Alveolar bone around the natural teeth opposing the implant prosthesis showed gradual bony apposition.

키워드

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