機能的側方圧下における Hydroxyapatite coated blade-vent implant 周囲の歯槽骨構造変化
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概要
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Hydroxyapatite coated blade-vent implant was implanted in the mandible of adult dogs and the superstructure of the implant was mounted on it. Lateral, vertical, and nonfunctional loading were made in the mesial direction through occlusal contact and a histological examination was made of changes in the mesio-distal bone structure around the implant. The findings suggest as follows : 1. In the cases of non-functional pressure loading, the reconstructive phenomenon of the bone around the implant scarcely occurred. 2. In the cases of vertical pressure loading, the osseous developmental hyperplasty was formed with time parallel to the implant. As in the cases which had insufficient support of bone causing cortical bone resorption, however, the bone remodeling for compensation was noted widely in the area around the body of implant. 3. In the cases of lateral pressure loading as compared with the cases of vertical pressure loading, the diffuse osteogenesis was observed with remarkable bone reconstruction at thick trabeculae just around the implant body. However the condition of the surrounding bone was still stable in the case with sufficient support of cortical bone. For the long-term case, the alveolar apical area presented the apposition of bone with time, with the difference being noted between mesial and distal bone levels. 4. The grade of osteogenesis was different according to compressive or tensile stress put upon the area, and the earlier osteogenesis was noted in the areas under the compressive stress. The findings that osteogenesis occurs differently according to the kind and size of the functional pressure transmitted to the bone through the implant suggests that bone reconstruction corresponds to the functional pressure.
- 九州歯科学会の論文
- 1994-02-25
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関連論文
- 機能的側方圧下における Hydroxyapatite coated blade-vent implant 周囲の歯槽骨構造変化 : 主論文の要旨
- 機能的側方圧下における Hydroxyapatite coated blade-vent implant 周囲の歯槽骨構造変化