A comparative study of osseointegration of titanium implants in corticocancellous block and corticocancellous chip grafts in canine ilium

Abstract

This study was undertaken to compare the relative rates and extent of osseointegration of dental implants when placed simultaneously with either corticocancellous block or particulate corticocancellous bone grafts. Using the canine ileum as a model site, the implants were placed so that each served as its own control. The implants were harvested at 1, 2, or 3 months for evaluation by light microscopy, microradiography, and histomorphometry. Both types of grafts were determined to be viable by microscopic evaluation of fluorescent labels. Qualitatively there appeared to be greater bone density in the corticocancellous block graft implant sites. At 3 months, the block graft implant sites had a levelof osseointegration (59.6%) that approximated the control implant sites (65.2%), but was significantly greater than the particulate graft sites (39.2%). These results indicate that implants in corticocancellous block grafts develop osseointegration more rapidly than those in particulate bone grafts. The clinical implications of these findings are discussed. © 1994, American Association of Oral and Maxillofacial Surgeons. All rights reserved.. All rights reserved.