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

The authors performed the retrospective clinical study of Osstem GS II, US III, SS III implant systems which were placed at Seoul National University Bundang Hospital between August 2004 and September 2007 and got the following results. 1. GS II systems were used at a variety of sites, however, US III and SS III systems were usually used at maxillary posterior sites. 2. The length of 11.5 mm and the diameter of 4 or 5 mm implants were usually used. 3. Most implants were usually used for partial fixed prosthesis, however, many GS II fixtures were used for single restoration. 4. All 3 systems got the excellent primary and secondary stability. 5. Mean followup periods after final prosthetic delivery were 9.9 months in cases of GS II, 9.7 months US III, and 9.6 months SS III. The mean amounts of crestal bone resorption of each systems were 0.6 mm, 0.4 mm, and 0.4 mm. 6. Each survival rates at final followup time were 97.2% in cases of GS II, 98.1% US III, and 100% SS III. The cases which showed crestal bone resorption more than 1.5 mm were 4 cases of GS II and 2 cases of US III. The success rates of each systems were 94.4% in cases of GS II, 96.3% US III. and 100% SS III. We obtained the favorable clinical results of Osstem GS II, US III, and SS III system during the short observation period and confirmed the availability in a variety of clinical cases.