@article{oai:mdu.repo.nii.ac.jp:00001252, author = {鈴木, 和夫 and 吉澤, 英樹 and 荒木, 信清 and 高橋, 重雄 and 伊藤, 充雄}, issue = {2}, journal = {松本歯学}, month = {Aug}, note = {application/pdf, Titanium alloy blade-vent implants are generally used for endosseous implants. Recently, hydroxyapatite ceramics are also used for endosseous implants in some cases. The hydroxyapatite-coated implant system developed by us was the most successful endosseous implant system of those developed in 1981. The implant material used for this system was produced by coating titanium plates with a mixture of 80% hydroxyapatite and 20% aluminum oxide powder. In the present study, we tested this implant system in dogs. Five inbred male beagle dogs were used. More than 3 months prior to implantation, the mandibular premolar teeth were extracted bilaterally under general anesthesia. Implants on the right side of the mandible in each animal were left untouched for 3 months. Thin sections were made with a sawing microtome in the bucco-lingual direction transverse to the long axis of the implants. Histological evaluation was done with a SEM and a light microscope using transverse and reflecting light. The results were as follows; 1) Radiographically, a radiolucent layer was found around the implant in metal or aluminum ceramics implant cases. In hydroxyapatite coated implants, however, there was an indistinct boundary between the implant and the alveolar bone. 2) Histophathologically, there was implant-bone contact in hydroxyapatite coated implants. No soft tissue was present between the implant and the alveolar bone. In the implant-bone contact, the healing bone was in close contact with the implant. The coating layer and the healing bone appeared to bind chemically at the interface. These results suggest that these implants were well tolerated by bone tissue and stimulated osteogenic activity around the implant. Complementary basic studies on the clinical use of hydroxyapatite coated implants are critical to the long-term success of this approach.}, pages = {222--235}, title = {プラズマ溶射インプラントの周囲組織についての組織学的観察}, volume = {13}, year = {1987} }