チタンインプラントの表面あらさが周囲組織に及ぼす影響

概要

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The present study examined the tissue responses to the different surfaces of titanium endosseous implants in dogs. The implants were cylindrical, each distal half surface of which was polished and mesial half was sandblasted with alumina particles 25, 50 or 125μm in average size. They were inserted in the mandible of dog and periimplant tissues were histologically observed. The results obtained were as follows : 1. The bone contacted all the polished and sandblasted titanium surfaces although there were some differences in contacting area among the surfaces. 2. The polished surface was markedly capsulated by the connective tissue as the experimental period increased and showed more delayed bone maturation than the sandblasted surfaces. 3. In the sandblasted surfaces, durative bone growth was observed and the bone contact was still maintained at 12 weeks. 4. When the density of trabeculae was originally coarse, the surface sandblasted with 50μm alumina showed more bone contact than those with other sizes of alumina. 5. Most of collagen fibrous bundles in the periimplant connective tissue appeared to run parallel to the surface of the implant. From the foregoing results, it is recommended to make the surface of titanium endosseous implant coarse by sandblasting for getting better bone support.
九州歯科学会の論文
1996-02-25