EVALUATION OF EFFICIENCY AND SAFETY OF PIEZOSURGERY VERSUS CONVENTIONAL ROTARY INSTRUMENTS IN LATERAL MAXILLARY SINUS FLOOR ELEVATION: A PROSPECTIVE RANDOMIZED CONTROLLED CLINICAL TRIAL

Abstract

To overcome the intra and post-operative complications that might arise during the use of theconventional instruments for cutting the bony window and elevation of maxillary sinus membrane,the application of ultrasonic device (piezosurgery) has been introduced.Aim of the study: To evaluate the efficiency and safety of the piezosurgery during direct sinuslifting procedure in comparison to the conventional rotary instruments.Patients and methods: A randomized controlled clinical trial was performed, in which fortypatients (17 females and 23 males) with bone height of less than 3 mm in the posterior maxilla, whorequired implant placement to replace the missing teeth, were selected. The sinus lift surgeries weredone either by the piezosurgery or the conventional bur technique. The rate of perforation, time ofthe operation, healing, postoperative edema, and pain were evaluated. Six months later, implantswere placed within the augmented sites.Results: A lower percentage of membrane perforation has been encountered in the piezosurgerygroup (5% one patient), when compared to the conventional group (15%, three patients).The painand swelling were significantly less in the piezosurgery group but the mean time was longer in thepiezosurgery group .Conclusion: The piezosurgery is an effective device that is safer in performing the lateralmaxillary sinus lift surgery than the conventional rotary method, but unfortunately it takes longeroperation time.