Histological response and clinical evaluation of heterograft and allograft materials in the elevation of the maxillary sinus for the preparation of endosteal dental implant sites. Simultaneous sinus elevation and root form implantation: an eight-month autopsy report.

In the midto late Seventies, Tatum (1977) reported on a procedure of sinus elevation to enable dental implants to be placed in the maxilla where insufficient bone was present due to sinus enlargement. Clinically, this procedure has shown some promise. To date, Lozada and James (1988) have been able to report on tissue recovered with a trephine from a sinus elevation site at the time of implant placement. This report investigates the response to resorbable hydroxylapatite OSTEOGEN@ (HA Resorb )@, Impladent Ltd., Holliswood, NY) combined with freeze-dried demineralized cortical bone powder (Southern California Neuroskeletal Tissue Bank, San Bernardino, CA) implanted during a sinus elevation and carried out simultaneously with root-form dental implantation.