[Clinical study of maxillary sinus floor elevation with simultaneous placement of implants from the top of alveoli].

PURPOSE: To evaluate the clinical results of maxillary sinus floor elevation technique with bone condensers on implantation.

METHODS: 104 patients underwent maxillary sinus floor elevation and 126 implants were inserted and restored. Clinical examination and radiographs were conducted. Spiral CT scanning and three-dimensional reconstruction was performed among 30 cases during follow-up.

RESULTS: All the patients with 9.16 mm (5-11 mm) height of residual bone in the posterior maxilla underwent sinus floor elevation with simultaneous implant placement using bone condensers. The elevation height was 2-6 mm. The follow-up time was 16-82 months. No sinus complication was observed during the follow-up period. The survival rate was 100%. Spiral CT scanning and three-dimensional reconstruction showed that dental implants were submerged in the alveoli around, their tops were covered with bone.

CONCLUSIONS: With bone condensers, maxillary sinus floor elevation with simultaneous placement of implants from the top of alveoli was a predictable and safe technique. There were no implants loose or lost, no clinical complaint of maxillary sinus area, and X-ray examination showed well osseointegration.