Drill device for sinus lift.

摘要

A crestal approach for implant placement in deficient alveolar ridges is presented. The set of drills allows the surgeon to lift the membrane at the floor of the maxillary sinus with a bone disc, without the risk of tearing it. The plastic and cutting drills, respectively, are set in just below the floor of the maxillary sinus. The lifting drill is then slowly inserted from the socket, until a desirable length. Implants were hydroxyapatite coated and had a 3.75-mm diameter. This invention suggests that this is a reliable and predictable technique for the prosthetic rehabilitation of the maxillary posterior regions in the presence of anatomic restrictions for implanting.