Comparison of a Double-layered Technique With the Buccal Sliding Flap for Closure of Oroantral Communication

Inclusion Criteria: Eligible population among those older than 18 y.o, systemically healthy, with a diagnosis of OAC (OroAntral Communication), or with a strong pre-extractive radiographic suspicion of potential OAC, and associated symptoms (varying among cheek pain with nasal obstruction, purulent rhinorrhea, foul odor, foul taste, headaches, anterior maxillary tenderness, and postnasal drip) . Exclusion Criteria: i) received antibiotic therapy in the last 3 months ii) requiring anticoagulation therapy iii) had systemic diseases that could interfere with oral tissue healing process/bleeding iv) were using bisphosfonates v) were pregnant vi) had mental/physical disabilities vii) underwent radiation treatment to the head or neck region.