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Children with Möbius syndrome may have delayed speech because of paralysis of muscles that move the lips, soft palate and tongue root. However, with speech therapy, most people with Möbius syndrome can develop understandable speech. [5] Möbius syndrome has been associated with increased occurrence of the symptoms of autism. [6]
A high-arched palate (also termed high-vaulted palate) is where the palate is unusually high and narrow. It is usually a congenital developmental feature that results from the failure of the palatal shelves to fuse correctly in development, the same phenomenon that leads to cleft palate . [ 1 ]
Hypernasal speech is a disorder that causes abnormal resonance in a human's voice due to increased airflow through the nose during speech.It is caused by an open nasal cavity resulting from an incomplete closure of the soft palate and/or velopharyngeal sphincter (velopharyngeal insufficiency). [1]
While identifying the causes of tongue thrust, it is important to remember that the resting posture of the tongue, jaw, and lips are crucial to the normal development of the mouth and its structures. If the tongue rests against the upper front teeth, the teeth may protrude forward, and adverse tongue pressure can restrict the development of the ...
Causes include a history of cleft palate, adenoidectomy, irregular adenoids, cervical spine anomalies, or oral/pharyngeal tumor removal. [2] In contrast, "velopharyngeal incompetence" refers to a neurogenic cause of inadequate velopharyngeal closure. Causes may include stroke, traumatic brain injury, cerebral palsy, or neuromuscular disorders. [3]
A cleft lip is an opening of the upper lip, mainly due to the failure of fusion of the medial nasal processes with the palatal processes; a cleft palate is the opening of the soft and hard palate in the mouth, which is due to the failure of the palatal shelves to fuse together. [10]
Other features frequently associated with VWS include hypodontia in 10-81% of cases, narrow arched palate, congenital heart disease, heart murmur and cerebral abnormalities, syndactyly of the hands, polythelia, ankyloglossia, and adhesions between the upper and lower gum pads.
flaccid paralysis, [1] such as soft palate weakness (examined by asking the patient to say aah). [1] muscle atrophy, [1] such as tongue atrophy with fasciculations. nasal speech lacking in modulation and difficulty with all consonants. drooling of saliva. [1] normal or absent jaw jerk. reduced or absent gag reflex. [1]