Journal of implantology and applied sciences ISSN:2765-7833(Print) 2765-7841(Online) 대한구강악안면임플란트학회지

I investigated the complications and early failures of sinus bone graft and implant placement performed by an oral and maxillofacial surgeon from January 2000 to November 2005 retrospectively. And I got following results by evaluating the association of complications and failures and risk factors. 1. The most frequent intraoperative complication was sinus membrane perforation. This complication developed in 38 sinuses from 107 sinuses of 88 patients(35.5%). 2. Postoperative complications included wound dehiscence, severe swelling and hematoma, maxillary sinusitis, nasal bleeding, local infection and upper lip paresthesia. Especially maxillary sinusitis developed in 7.5% of the patients. The only one patient experienced the implant failure among them. 3. Sinus membrane perforation don’t provide the direct cause of maxillary sinusitis. However, there were 9 implant failures in 7 sites(18.4%) of 6 patients from the 38 sinus grafts. 4. Seventeen early implant failures developed in 12 patients. Among them 6 implants of 6 patients had osseointegrated failure before prosthodontic treatment and 11 implants of 6 patients failed within 1 year after prosthodontic loading. Based on this research results, sinus membrane perforation during the sinus bone graft can provide a major cause of early implant failure but is not directly associated with maxillary sinusitis. I guess that the possible cause of implant failure within 1 year after prosthodontic loading can be inadequate healing period and overloading and I would like to suggest the etiologic and risk factors of early implant failures more accurately through consecutive article.