Classification The most frequent types of cleft palates are overt, submucous, and occult submucous.
Velopharyngeal inadequacy
Velopharyngeal insufficiency
Congenital cartilaginous rest of the neck
Patulous Eustachian tube
Nasal septum deviation
Salivary gland hypoplasia
Persistent thyroglossal duct
Esophageal motility disorder