Fifteen adult patients with skeletal mandibular prognathism or openbite underwent surgical and orthodontic treatment, and then received myofunctional therapy. The faces of fifteen adults with jaw deformities were videotaped before and after surgical orthodontic treatment and myofunctional therapy. After surgery and orthodontic treatment, improvement in occlusion and facial harmony were apparent. Study and observation of the videotape films indicated improvements in orofacial posture, muscle-tone, function in speech and swallowing and reduction of damaging muscle pressure habits.

Yamaguchi H, Sebata M. Changes in oral functions and posture at rest following surgical orthodontic treatment and myofunctional therapy. Evaluation by means of video recording. Int J Orofacial Myology. 1995;21:29‐32.