GUIDED BONE REGENERATION AROUND TITANIUM IMPLANTS - REPORT OF THE TREATMENT OF 1,503 SITES WITH CLINICAL REENTRIES

Guided bone regeneration procedures were carried out around 1,503 impl ants, including 237 that were noted in a previous publication, using G ore-Tex membranes over demineralized freeze-dried bone allograft, free ze-dried bone allograft, an equal combination of these, or demineraliz ed freeze-dried bone allograft combined with equal parts of resorbable tricalcium phosphate. Comparison of findings at the time of clinical reentry and preoperative photographs and measurements yielded an overa ll success rate of 97.0% in the treatment of dehisced or fenestrated i mplants or fixtures placed in immediate extraction sockets. Success wa s defined as the presence of regenerated hard tissue covering ail prev iously exposed implant surfaces (complete success) or as the presence of two threads or 2 mm or less of residual dehiscence (partial success ).