OSSEOINTEGRATION OF ROUGH ACID-ETCHED IMPLANTS - ONE-YEAR FOLLOW-UP OF PLACEMENT OF 100 MINIMATIC IMPLANTS

Between January 1992 and October 1992, 100 Minimatic screw implants ma de of titanium alloy with rough acid-etched surfaces were placed in 63 consecutive partially edentulous patients. At second-stage (uncoverin g) surgery performed after a 4- to 6-month healing period, none of til e implants showed any signs of mobility, peri-implant infection, or bo ne loss. After an additional healing phase averaging 2 weeks, the pati ents were restored with fixed prostheses. Patients were reexamined eve ry 3 months for 1 year, with all 63 patients available for evaluation during this period. Periapical radiographs were taken preoperatively i mmediately after surgery, and at 6 and 12 months after implantation. T here were no signs of peri-implant radiolucencies in any of the implan ts, and alveolar bone loss was less than 1 mm on average 1 year after implantation. Based on Plaque Index, sulcular bleeding index, pocket p robing depth, attachment level, width of keratinized mucosa, and hand- tested mobility, 99 implants were considered successful and 1 (which d eveloped peri-implant infection) was considered a failure. Study resul ts substantiate other reports that implants with a rough surface can y ield predictable good results.