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tongue thrust (Oromyofunctional) Disorders |
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Tongue thrust is a common name used to describe
orofacial muscular imbalance. It has also been called reverse swallow
or immature swallow. Nearly all infants swallow by pushing the tongue
forward. By the time they reach the age of six, most children have
automatically changed to a normal swallowing pattern, which involves
squeezing the tongue against the roof of the mouth instead of pushing
it forward against the teeth.
What Causes Tongue Thrust Disorders?
Research studies suggest hereditary factors, learned behavior such as thumb
sucking and/or medical conditions as possible causes for tongue thrust.
For what ever reason, a person experiences a delay or interruption in the
oral maturational process and fails to progress to an adult swallow pattern.
Symptoms
A person with tongue thrust may demonstrate one or more
of the following symptoms:
- facial grimace and/or pursing of the lips when swallowing
- mouth breathing due to allergies or enlarged tonsils
and adenoids
- an open bite condition of the teeth
- difficulty with speech, especially the /s/ and /z/
sounds
- when at rest, (for example, while watching television
or reading a book) an open mouth posture with a forward
tongue position is noted.
When Is Therapy Indicated?
Tongue thrust may first be identified by the family dentist because of
irregular positioning of the teeth. It may also be detected by a speech
pathologist when a child has difficulty making certain sounds.
Children and adults, before or during orthodontic treatment, are often
referred to a speech pathologist for assessment.
Therapy is recommended when a problem in speaking and/or irregular positioning
of the teeth exists and can be related to tongue thrust.
If the tongue thrust behavior is not corrected, orthodontic treatment may
take longer and a person may experience a set-back when orthodontic treatment
has ended and their braces are removed.
How Does Therapy Work?
Components of tongue thrust therapy include exercises for the lips, tongue
and jaw that are designed to change an incorrect or immature swallow to
an adult pattern that is beneficial to the positioning of teeth and to
correct articulation of speech sounds. The condition can usually be corrected
in three to six months.
If you have questions about tongue thrust, talk with your family dentist
and/or a speech pathologist. To schedule an evaluation with one of the
therapists in our speech pathology department,
please contact us at:
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