PERFORATION OF SINUS MEMBRANE DURING SINUS FLOOR ELEVATION: REPAIR WITH COLLAGEN MEMBRANE AND METHOD RELIABILITY

Introduction: Sinus floor elevation (sinus lift) constitutes one of the most predictable methods of bone augmentation in the maxillary posterior region. However sinus membrane perforation during this surgical procedure may be an aggravating factor for the final bone augmentation outcome, thus a number of techniques have been introduced for immediate sinus membrane repair. Aim: The scope of this scientific work is to present the application of collagen membrane surgical technique, which is a widely used technique for sinus membrane repair after sinus membrane perforation when performing sinus lift. Moreover, the outcome of this surgical technique in terms of bone augmentation and implant osseointegration are also presented, as well as an extensive literature review on this subject. Materials and Methods: 106 cases with sinus floor elevation were performed within a period of 3 years, accounting for a series of 12 cases with sinus membrane perforation. In all 12 cases sinus membrane repair took place with the application of a collagen membrane. Results: In 3 out of 106 cases of sinus floor elevation inflammation of the involved maxillary sinus was noted but none of these 3 cases was implicated with sinus membrane perforation. Conclusions: Taking into account the data of the present work, as well as an extensive literature review on this subject, immediate repair with collagen membrane after sinus membrane perforation when performing sinus lift, is a very effective technique for maxillary bone augmentation.