The Effectiveness and Practicality of a Novel Barrier Membrane for the Open Window in Maxillary Sinus Augmentation...

Area of Science:

• Oral and Maxillofacial Surgery
• Regenerative Dentistry
• Biomaterials Science

Background:

• Maxillary sinus augmentation (MSA) via a lateral approach is a standard procedure for bone reconstruction.
• Graft displacement is a potential complication following MSA.
• Resorbable barrier membranes are utilized to stabilize bone grafts.

Purpose of the Study:

• To evaluate risk factors for postoperative bone graft displacement in MSA.
• To assess the clinical application of a long-term resorbable L-lactic acid/-caprolactone (PLA/PCL) membrane as a barrier.
• To analyze bone height changes and augmentation predictability.

Main Methods:

• Prospective study of 24 patients undergoing MSA.
• CT scans pre- and post-procedure (1 week, 5-6 months).
• Measurement of bone height changes, reduction rates, and graft displacement; analysis of risk factors.

Main Results:

• All patients achieved bone height increments (p < 0.005).
• Bone graft displacement occurred in 8 patients, with an 8.38% ± 4.88% reduction rate from 1 week to 5 months.
• Sex, septa, and specific sinus floor distances were associated with graft displacement (p < 0.05).

Conclusions:

• MSA is effective in increasing bone height.
• PLA/PCL membranes show promise as effective barriers for the MSA open window.
• Identified risk factors can help predict and potentially mitigate graft displacement.