► For the assessment, a nasometer is used to analyze acoustic energy emitted through the oral and nasal cavity during the production of speech

► Aerodynamic assessment, measuring oral pressure and airflow during speech, and the size of velopharyngeal gap

► Nasopharyngoscopy- to assess the function of the velopharyngeal mechanism

► Assess velopharyngeal closure during speech and phonation using videofluroscopy and lateral cephalographs