학술논문
Beagle dog를 이용한 임프란트 사이의 간격에 따른 골흡수에 대한 방사선 및 조직학적 평가
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- 영문명
- INFLUENCE OF INTERIMPLANT DISTANCE ON BONE RESORPTION : A RADIOLOGICAL AND HISTOLOGICAL STUDY IN BEAGLE DOGS
- 발행기관
- 대한구강악안면외과학회
- 저자명
- 이수연(Su-Youn Lee) 이재욱(Jae-Wook Lee) 김진욱(Jin-Wook Kim) 이상한(Sang-Han Lee)
- 간행물 정보
- 『대한구강악안면외과학회지』대한구강악안면회과학회지 제34권 제5호, 571~577쪽, 전체 7쪽
- 주제분류
- 의약학 > 내과학
- 파일형태
- 발행일자
- 2008.10.30
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국문 초록
영문 초록
Introduction: Possible etiologic factors associated with bone loss around implants after implantation are surgical trauma, occlusal overload, periimplantitis, presence of micro gap and the formation of biologic distances. Tarnow et al. observed that the crestal bone loss was greater when the distance between the implants was <3mm than when the implants were ≥3mm apart. The aim of this study was to evaluate the influence of different interimplant distance on marginal bone and crestal bone resorption in the beagle dogs.
Materials and methods: The mandibular premolars of 5 dogs were extracted bilaterally. After 12 weeks of healing, each dog received 7 implants.
On each side, implants were separated by 2mm (Group 1) and by 5mm (Group 2). After 16 weeks of healing, the dogs were sacrificed. Marginal bone loss was determined through linear measurements made between the implant-abutment junctions and the most coronal portions of the bone in contact with the implant surface. A line was drawn uniting the implant-abutment junctions of the adjacent implants, and a linear measurement was made at the
midpoint in the direction of the most coronal peak of the interimplant bone crest to determine the crestal bone loss. Both of them was measured radiologically and histologically.
Result and conclusion: In radiological analysis, the mean of marginal bone loss was 1.26±0.14mm for group 1 and 1.23±0.34mm for group 2, the mean of crestal bone loss was 1.10±0.14mm for group 1 and 1.02±0.30mm for group 2. The results were not statistically significant between 2 groups. In histological analysis, the mean of marginal bone loss was 1.63±0.48mm for group 1 and 1.62±0.50mm for group 2, the mean of crestal bone loss was 1.23±0.35mm for group 1 and 1.15±0.39mm for group 2. The differences were also not statistically significant. The clinical significance
of this result is that the increase in the crestal bone loss results in the increase in the distance between the base of the interproximal contact of the crowns and the bone crest, and this determines if papilla will be present or absent between implants. Considering this fact, keeping up sufficient interimplant distance is important to minimize crestal bone loss.
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