
The study presented a modified McGregor flap technique for reconstructing lower lip defects using the depressor anguli oris (DAO) muscle chimeric flap. It compared outcomes between the modified and conventional McGregor techniques in terms of functional evaluation of oral competency, speech intelligibility, and tactile sensation of reconstructed lip outcomes, as well as functional satisfaction and the Patient and Observer Scar Assessment Scale (POSAS). Results showed that the modified technique with DAO chimeric flap had better oral competence and lip function satisfaction while maintaining intelligible speech and no differences in tactile sensation. The study concludes that the modified technique offers a good choice for maintaining sensory and motor functions in lower lip reconstruction.
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