U.S., March 18 -- ClinicalTrials.gov registry received information related to the study (NCT07476664) titled 'Acute Oroantral Communication Closure: Resorbable Collagen Membrane vs. Buccal Advancement Flap Outcomes' on Feb. 27.
Brief Summary: Oroantral communication (OAC) is an abnormal opening between the oral cavity and the maxillary sinus that may occur after extraction of posterior maxillary teeth. If not treated promptly, it can lead to sinus contamination, chronic infection, and development of an oroantral fistula requiring more complex surgical management. The standard surgical treatment is closure with a buccal advancement flap (Rehrmann technique). However, this method may reduce vestibular depth, displace the mucogingival junctio...