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The normal
development allows the child to breathe through the nose.
The children are prone to infections especially throat
infections. Chronic infections of the nasal and the throat
area cause the inflammation of the adjoining mucosa of the
nasal tract. This causes the narrowing of the tract through
which the child breathes. The strain and difficulty in
breathing caused by the blockade forces the child to breath
through the nose. Even if the inflammation reduces in the
nasal tract, the child gets into a habit of mouth breathing.
And most of the times the parents are not even aware of the
problem. The normal development of the oral structures
depends upon the ability of the child to breath through the
nose without obstruction, especially at night. This does not
mean that if your child gets an occasional cold and can't
breath through his nose he will grow up with oral
abnormalities. However, chronic obstruction of the nasal
airway due to deviated septum, persistent allergies or other
anatomic abnormality will tend to cause the roof of the
mouth (the hard palate) to rise and the back upper right and
left teeth to collapse toward each other. This condition is
called a constricted arch.
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The picture on the right is a model of a constricted arch.
The model on the left has a more normal arch form. A patient
with the teeth on the right will have a smile that shows
mostly the two prominent front teeth, with the others in
shadow. The one on the left shows a normally shaped arch
form resulting in a broader smile .
The treatment requires that the patency of the nasal tract
be checked
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