多孔質アパタイトの添加補填に関する実験的研究
―顎骨添加実験―
1986 年 53 巻 2 号 p. 406-452
詳細
1986 年 53 巻 2 号 p. 406-452
Experiment of the onlay implanting porous hydroxyapatite ceramic material (pore ratio: 65%) on the alveolar ridge of the mandible was conducted to investigate the clinical utility of the material for onlay implantation.
Extraction of the P2, P3, P4 and M1 from the adult dog mandible and alveoectomy of about 4.5cm long by 1 cm high and a thickness of the entire buccal-lingual width of the mandible were performed.
Two months later the impression of the superior surface of the mandible was taken and the material was adapted to the model.
Three months later a buccolingual incision was made on the mandible crest about 5mm posteriorly to the P1. Through this incision, an elevator was used to separate the mucoperiosteum, creating a tunnel. The material was inserted into the dissected pockets.
The implants were retrieved 1 week to 1 year after implantation. Histological examination demonstrated: After 1 week, bone formation begins around the mandible surface adjacent to the material; After 2 months, a large amount of bone forms inside the material; After 1 year, the compact bone forms on the inner and outer surface of the material.
These results indicate that the material is useful for onlay implantation in the oral and maxillofacial area.
