A Novel Approach to Treat Large Schneiderian Membrane Perforation -A Case Series

In the posterior maxilla insufficient alveolar bone height and proximity of the sinus floor are often limitations for implant placement. Maxillary sinus augmentation has demonstrated a high success rate in the literature and is currently routinely used to enable implant placement in an atrophic posterior maxilla. However, the technique has a potential to develop complications, which could affect and jeopardize the final outcomes. Perforation of the Schneiderian membrane is the most frequently reported complication with an incidence ranging from 10 to 44%. Several protocols have been established in order to repair sinus membrane perforations. Nevertheless these solutions might increase the length of the surgery and are technique sensitive. The purpose of this case series is to present a simple novel technique to treat large sinus perforations of the sinus membrane (>10 mm) during lateral approach sinus floor elevation with a collagen sponge, associate with a re-entry surgery 3-6 weeks following the perforation.