Introduction
pain
CLOTS, SECONDARY, CAVITY
Oroantral communications (OAC) are unnatural openings between the oral cavity and the maxillary sinus, which occur due to loss of the soft and/or hard tissue separating these compartments [Numerous treatment strategies have been developed for the management of OAC and OAF and have shown high rates of successful defect closure [Recently, considerations of alternative treatment methods have included the successful use of plasma-rich fibrin (PRF) for OAC as reported by Demetoglu et al. [As there is a lack of clinical data on OAC defect closure after PRF treatment, this study was conducted and focuses on two major aims: 1) The primary aim is to compare the wound healing outcome of the OAC defect closure with clinical parameters after treatment with PRF clots or after surgical treatment with a BAF. 2) The secondary aim is to assess the patient-related and surgery-related risk factors affecting the healing process and to determine the wound healing course by using a specific wound healing index. In addition, the displacement of the mucogingival line and the patient-scored pain level for both groups are evaluated. The initial working hypothesis is that the use of PRF and the buccal flap will not differ for the final clinical wound healing outcome of OAC defect coverage, but may be different regarding the wound healing course, the displacement of the mucogingival borderline and patient-related postoperative perception.