Mesiodens

What it means

A supernumerary tooth in the midline between the maxillary central incisors.

A mesiodens is not a supernumerary incisor (i.e., it does not have the morphology of an incisor). Rather, it is a conoid, extra tooth located between the maxillary central incisors. Mesiodens is the most common supernumerary tooth. Typically, they are small. They are usually conical in shape but may have heterogeneous forms. Mesiodens may remain unerupted and cause failure of a permanent incisor to erupt. Mesiodens may develop in an inverted position.

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: Extra tooth · Extra tooth in the midline · Median supernumary tooth · Mesiodentes · Midline supernumary tooth