Journal of the Korean Association of Oral and Maxillofacial Surgeons

  • 제29권6호
  • /
  • Pages.397-406
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  • 2003
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  • 2234-7550(pISSN)
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  • 2234-5930(eISSN)
대한구강악안면외과학회 (The Korean Association of Oral and Maxillofacial Surgeons)
권호 표지

백서에서 난소절제가 티타늄 임플랜트의 골 유착에 미치는 영향

THE EFFECTS OF OVARIECTOMY ON TITANIUM IMPLANT OSSEOINTEGRATION IN RAT'S TIBIA

  • 김병민 (부산대학교 치과대학 구강악안면외과학교실) ;
  • 성일용 (울산대학교 의과대학 울산대학교병원 구강악안면외과학교실) ;
  • 박봉수 (부산대학교 치과대학 구강해부학교실) ;
  • 신상훈 (부산대학교 치과대학 구강악안면외과학교실) ;
  • 김종렬 (부산대학교 치과대학 구강악안면외과학교실)
  • Kim, Byung-Min (Dept. of Oral and Maxillofacial Surgery, College of Dentistry, Pusan National University) ;
  • Sung, Iel-Yong (Dept. of Oral and Maxillofacial Surgery, College of Medicine, Ulsan University) ;
  • Park, Bong-Soo (Dept. of Oral Anatomy, College of Dentistry, Pusan National University) ;
  • Shin, Sang-Hoon (Dept. of Oral and Maxillofacial Surgery, College of Dentistry, Pusan National University) ;
  • Kim, Jong-Ryoul (Dept. of Oral and Maxillofacial Surgery, College of Dentistry, Pusan National University)
  • 발행 : 2003.12.31
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초록

The purpose of this study was to observe the titanium implant osseointegration in the osteoporosis-induced animal model. Seventy rats, 11 weeks of age, were divided into two groups : an ovariectomized group and a control group. Titanium screw implants(diameter, 2.0mm; length, 3.5mm) were placed into left tibias of 70 rats, 35 in the control group and 35 in the experimental group. The rats were sacrificed at different time interval (1, 2, 3, 4, 6, 8, and 12 weeks after implantation) for histopathologic observation, histomorphometric analysis and immunohistochemistry with fibronectin and CD34 antibody. The results obtained from this study were as follows: 1. Histopathologically findings, newly formed bone was seen at 3 weeks and became lamellar bone at 8 weeks, and mature trabecullar bone was seen at 12 weeks control group. In experimental group, thickness of regenerated bone increased till 8 weeks gradually and mature trabecullar bone was seen at 12 weeks. 2. By histomorphometric analysis, marrow bone density and contact ratio of marrow bone to implant decreased significantly from 8 to 12 weeks in experimental group compared to control group and also total bone to implant contact ratio decreased significantly from 8 to 12 weeks in experimental group. 3. Fibronectin immunoreactivity was strong at 3 weeks control group and reduced after 8weeks gradually. But it was continuously strong from 3 to 8 weeks in experimental group. 4. CD34 immunoreactivity was very strong in the newly formed osteoblasts from 3 to 8 weeks control group. But it reacted minimally later. While in experimental group, it reacted continuously strong from 3 to 12 weeks. The results of this study suggest that osteoporosis is not an absolute contraindication to dental implantation if sufficient period suggested after fixture installation till second stage surgery.

키워드

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