Tricalcium phosphate ceramicを用いたsinus lift後の組織学的観察

抄録

The maxillary molar region is often a problem area for the insertion of the endosseous implants. Sinus lift is a surgical procedure to create the space for the implants by increasing the alveolar height by raising the maxillary sinus floor. As the graft materials, hydroxyapatite(HA), β-tricalcium phosphate (TCP), frozen bone particles, dried demineralized bone patrticles, and so on have been used. However, the reports regarding histological studies on sinus-lift grafts are very few.
This study was undertaken to histologically evaluate the postoperative states of four cases of sinus lift performed with resorbable bone graft material, Augmen^®, which is composed of TCP.
The results were as follows:　While three of the four cases showed sufficient bone formation as well as connective tissue around the TCP particles, in one case, most of the areas around the particles were occupied by the connective tissue and the area of bone formation was very small. In all cases, the degree of chronic inflammatory infiltrate into the connective tissue was minimal.
These results provide useful information about applying sinus lift to patients.