mesiodens
The term mesiodens refers to a supernumerary tooth that is present in the midline of the maxilla between the two central incisors. One or two mesiodentes may be present.
Epidemiology
The mesiodens is the most frequent supernumerary tooth with a prevalence of 0.15% to 1.9%.
Mesiodens appears to be more common in males than in females with a male-female ratio of 2:1.
Familial occurrence of mesiodens is reported to involve more than one sibling, or one generation. In some cases, this anomaly has also been seen in more than one generation.