OWN - Quintessenz Verlags-GmbH CI - Copyright Quintessenz Verlags-GmbH OCI - Copyright Quintessenz Verlags-GmbH TA - Int J Periodontics Restorative Dent JT - International Journal of Periodontics & Restorative Dentistry IS - 1945-3388 (Electronic) IS - 0198-7569 (Print) IP - 3 VI - 13 PST - ppublish DP - 1993 PG - 245-253 LA - en TI - Placement of hydroxyapatite-coated endosseous implants in fresh extraction sites: a case report FAU - Knox AU - Knox FAU - Lee AU - Lee FAU - Meffert AU - Meffert CN - AB - This case illustrates the use of the principles of guided tissue regeneration to achieve osseointegration of an endosseous dental implant. One implant was placed immediately, with hydroxyapatite and a barrier membrane, in an extraction site, while another was placed in a healed site. Eighteen months postinsertion, the implant placed in the extraction socket exhibited better maintenance of crestal height than did the implant inserted in the healed site. AID - 852488