Development of an intraoral device for facial muscle retraining and its clinical application.

The aim of this work was to develop a facial neuromuscular retraining technique for cases of facial palsy, involving an easy-to use intraoral device that allows correcting abnormal neuromuscular patterns and improving esthetics. Facial palsy is a motor alteration of multiple origin that results in facial asymmetry. Treatment remains controversial to date and includes, surgical anastomosis and decompressive and plastic surgery, corticosteroids therapy, injection of botulinum toxin, and administration of other medicinal drugs.