Prospective 1-Year Study of Immediately Loaded Implants: 8-Patient Case Series Report

摘要

The goal of this case series report is to demonstrate the predictability of providing immediate restorations with an implant specifically designed to achieve high primary stability, and to report on 12-month survival outcomes. Twenty-nine implants were placed in eight patients with various tooth-replacement needs, from single teeth to partially edentulous spans to fully edentulous mandibles. A new tapered-implant system (The Marc Nevins, Little Implant) was utilized that incorporates a self-tapping thread design with a thread pitch and thread lead to improve primary stability at insertion. All implants were placed with a minimum insertion torque of 45 Ncm. Four immediate implants and two early placements at extraction sites were included in the cohort. Twenty-seven implants were clinically successful at 1 year. Two implants in a healed ridge were found to have failed at 6 weeks postoperative in one patient wearing an ill-fitting removable partial denture. The radiographic crestal marginal bone levels were recorded in millimeters from the top of the implant platform to the first bone to implant contact. The mean crestal marginal bone level change was -0.57 +/- 0.82 mm. This case series report demonstrates the ability of an implant designed for high primary stability to achieve successful integration in the presence of an immediate restoration for various clinical presentations, including single-tooth, multi-unit, and edentulous cases.