Micrognathia is a condition where the mandible is abnormally small or underdeveloped. 

Micrognathia can occur due to genetic factors, such as a chromosomal abnormality or a genetic syndrome. 

It can also be caused by environmental factors, like prenatal exposure to certain medications or substances.

The main symptom of micrognathia is a visibly small or recessed jaw. 

It can cause functional issues like difficulty with chewing, swallowing, and breathing, and may also affect the alignment of the teeth, speech development, and facial appearance.

Diagnose based on physical examination, medical history, and sometimes imaging tests like X-rays or CT scans.

Treatment options depend on the severity and underlying cause of micrognathia. 

In mild cases, observation and monitoring of growth may be sufficient. 

Orthodontic treatment with braces or other appliances can help correct dental and jaw al issues. 

In more severe cases, surgery may be necessary to improve jaw function and facial symmetry.

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