Prominence of the premaxilla

What it means

Prominent positioning of the premaxilla in relation to the rest of the maxilla, the facial skeleton, or mandible. Not necessarily caused by an increase in size (hypertrophy of) the premaxilla.

As a consequence of prominence of the premaxilla, the overlying structures, the nose and philtrum, may appear prominent. There is increased convexity of the face and an increased nasolabial angle. In the presence of a normal sized mandible, retrognathia may be appreciated.

Rare diseases that can present with this2

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Anterior position of the primary palate bone · Premaxillary bone excess · Prominence of the intermaxillary bone · Prominence of the primary palate bone · Prominent premaxilla