The Role of the Velopharyngeal Sphincter in the Speech of Patients with Cleft Palate or Cleft Lip and Palate Using Perceptual Methods

摘要

BACKGROUND:The velopharyngeal sphincter (VPS) plays the main role in speech formation. The cleft palate, due to the damage of the soft palate, leads to dysfunction of the velopharyngeal sphincter thus causing speech disorder.