The Effectiveness and Practicality of a Novel Barrier Membrane for the Open Window in Maxillary Sinus Augmentation with a Lateral Approach, with Risk Indicators for Bone Graft Displacement and Bone Height Decrease: A Prospective Study in Humans

Maxillary sinus augmentation with a lateral approach (MSA) is well-established treatment. In this prospective study, we evaluated risk factors for postoperative bone graft displacement and reported the clinical application of long-term resorbable L-lactic acid/-caprolactone (PLA/PCL) as barrier membrane to cover open window in wall MSA. Twenty-four patients underwent MSA according relevant criteria; CT data obtained before 1 week (1 w) 5–6 months (5 m) post-MSA, height changes, reduction rates at w 5 m measurements, were examined. All showed increments (p < 0.005). However, no difference was observed between post-MSA. Bone eight patients; rate from post-MSA 8.38% ± 4.88%. Sex, septa, maxillary floor–palatal distance, floor–maxillary ostium distance associated 0.05). The floor palatal angle influenced degree PLA/PCL compared favorably other membranes may be useful window.