Oroantral Communications: Clinical Efficacy of a Double-layered Technique With/Without the Palatal Connective Tissue Flap: A Superiority, Single-center, University-based Randomized Clinical Trial

The aim of this study was to compare the clinical results of combining a pedicle connective palatal flap coupled with the trapezoid buccal flap against the buccal flap alone in the closure of the oroantral fistula. Individuals with oroantral communication were consecutively included and eventually randomly allocated into 2 groups. In the group test, oroantral fistula was treated with the association of a buccal flap with a pedicle palatal connective tissue flap; in group control, a classic buccal sliding flap was performed. Patients' outcomes were recorded at 48 hours, 1 week, 2 weeks, and 1 month after surgery for assessment of primary (success rate) and secondary endpoints, such as experienced pain, discomfort, and complications. The success rate was 96.6% for the test group and 86.6% for the control group. No significant difference between the 2 groups could be observed regarding discomfort and pain. More pronounced pain was detected in the test group during the early healing period. This surgical procedure was demonstrated to be successful, with a high success rate and low patient discomfort.