Retrognathia

Retrognathism
A child with Treacher Collins syndrome showing microtia and retrognathism awaiting corrective surgery
Classification and external resources
Specialty	gastroenterology
ICD-10	K07.1
ICD-9-CM	524.10
DiseasesDB	34031
MeSH	D012182
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Retrognathia (or retrognathism) is a type of malocclusion which refers to an abnormal posterior positioning of the maxilla or mandible, particularly the mandible, relative to the facial skeleton and soft tissues.

A retrognathic mandible is commonly referred to as an overbite, though this terminology is not used medically.

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