Schneider Membrane Preservation With In Situ Osteogenesis: A Modified Maxillary Resection Study

This case series study aimed to find out if a new surgical technique that preserves the sinus membrane during upper jaw removal can help patients regenerate bone and recover function better after surgery. The study included two female patients with jaw tumors who were not suitable for or did not want complex reconstruction with tissue flaps. The main questions the study tried to answer were: Can the preserved sinus membrane help new bone grow spontaneously in the jaw defect area after surgery? Can this new method reduce common complications seen with traditional surgery, such as oronasal fistula and empty nose syndrome? How well can patients recover in terms of chewing, swallowing, speech, and quality of life after the procedure? In the study, during surgery, the surgeon carefully separated and preserved the sinus membrane from the bone that needed to be removed. After surgery, patients were followed with regular CT scans to check new bone growth. They also underwent tests to measure chewing force, swallowing ability, speech function, and quality of life to evaluate the long-term outcomes of this technique.

NCT Number	NCT07320417
Lead Sponsor	Wenzhao Guan
Conditions	Maxillary Diseases
Enrollment	18 participants
Start Date	2025-05-01
Primary Completion	2026-06-08 (estimated)
Study Completion	2026-06-10 (estimated)
Updated on ClinicalTrials.gov	2026-01-27