There are many causes of occlusion defects, including: [29]
Inconsistency of the size of the teeth with the size of the jaw.
Increase or decrease in the number of teeth.
Some genetic diseases.
Exposure of the fetus or child to external factors.
Some bad habits such as sucking fingers, and frequent use of a lollipop (pacifier) for children.
Premature extraction of milk teeth.
Late extraction of milk teeth.
Poor dental care, and lack of attention to it
mouth breathing
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