Anteriorly based palatal flap for closure of large oroantral fistula.

A technique for closure of large oroantral fistula as a lateral transposition flap with an anteriorly based palatal flap is described. Mucoperiosteum of the posterior third of the hard palate, which is more yielding, is raised to bridge large defects without leaving any considerable exposed raw area. The technique is particularly useful in the correction of defects at the tuberosity region.