Objective: This study investigates the efficacy of oral submucous fibrosis release and free flap reconstruction.
Study Design: Pneumo-computerized tomography (pneumo-CT) was used to evaluate postoperative changes in the buccal vestibular volume during maximum blowing.
Methods: From March 2003 to November 2008, 9 patients underwent 18 microvascular flap reconstructions after oral submucous fibrosis release. The preoperative and postoperative buccal vestibular volumes were determined by capturing the air density in the selected region on CT images, which were composed of 0.75-mm-thick slices that were then summated using analysis software (Biomedical Imaging Resource; Mayo Foundation, Rochester, MN).
Results: Postoperative results were measured for a mean follow-up period of 15 months (range, 6-36 mo). There was significant improvement in the interincisal distance from 12.44 (8.35) mm preoperatively to 32.56 (7.322) mm postoperatively (P = 0.000). There was an accompanying significant increase in the buccal vestibular volume from 5.66 (3.92) mL preoperatively to 9.38 (4.96) mL postoperatively on the right side (P = 0.032) and from 6.44 (4.20) mL preoperatively to 9.64 (4.65) mL postoperatively (P = 0.048) on the left side.
Conclusions: Adequate release of the mucosa and resurfacing with a free flap can increase the interincisal distance and improve the maximal buccal vestibular volume. Air-contrast pneumo-CT studies demonstrate an improvement in buccal mucosal elasticity.
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