Clinical application study of Immediate implantation without bone grafting in maxillary molars: a clinical study with one-year follow up

Abstract

Abstract Objective To evaluate the clinical effect and feasibility of immediate implant placement combined with flap surgery, no bone grafting and non-submerged healing, in the maxillary molar area. Material and methods Thirty-five patients with failed single teeth in the molar area were selected. After minimally invasive extraction of the tooth, the flaps were elevated, and an implant was inserted immediately; thereafter, a healing abutment was connected. The mucoperiosteal flaps were sutured around the abutment without tension, and a permanent repair was performed 6 months later. During the study period, the implant survival rate, cone beam computed tomography Tomography\xa0(CBCT) data, torque value, and the results of a subjective satisfaction survey conducted with a visual analogue scale (VAS) were evaluated to assess the procedure’s therapeutic effect and feasibility. Results All the included thirty-five teeth were successfully implanted immediately after flap surgery. The torque value was 42.79±5.70 N∙cm at the time of implant placement. During the 6-mo follow-up and after 1 year of restoration, all 35 teeth showed no loosening, implants and restoration shedding, or inflammation around the implants. The average value of the bone space around the implant immediately after the operation was 2.47 ± 0.56 mm. The bone spaces were filled with the new bone after 6 months postoperatively. The VAS was 8.71±1.05. Conclusions Immediate implant placement combined with flap surgery without bone grafting and non-submerged healing is feasible for the maxillary molar area and produces satisfactory clinical effect.