PMC10200079_01
CT aspect of the left oro-antral communication
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F1
The Cone beam computerised tomography (CBCT) image confirms the clinical aspect, showing a considerable oro-antral defect (Fig. 1).
Intraoperative aspect of the oro-antral communication. Visualization and suture of the Bichat fat pad flap
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F2
It included large amounts of granulation tissue and sinus polyps (Fig. 2.a). After assuring a proper drainage of the sinus, a small incision in the posterior region of the periosteum of the flap was done, and blunt disection determined the herniation of the Bichat fat pad. (Fig. 2.b) The buccal fat pad flap was gently pulled with a haemostatic forceps and sutured to the palatal flap margins (Fig. 2.c). The friable buccal flap was also sutured on top, but in an apical position in order to avoid affecting the depth of the vestibule creating partial coverage of the Bichat fat pad flap. 