Mesiodentes in twins: a case report and a review of the literature

Abstract

This report describes 7-year-old Afro-Caribbean monozygotic twin boys who both presented with bilateral unerupted mesiodentes palatal to the central incisors. There have been two previous similar reports. From this case and previous reports it was concluded that mesiodentes in monozygotic twins are likely to be concordant with respect to the number of supernumerary teeth. Unilateral mesiodens usually have been mirror imaged in each twin. Minor discordance between monozygotic twins is common with respect to the shape (conical, incisiform or tuberculate) and orientation (inverted or normal) of individual mesiodens within and between each twin.

Mesiodens: a radiographic study in children

“…Conical mesiodens is more common, and is more likely to erupt between the central incisors as a diminutive but fully developed tooth (3-7). In contrast, tuberculate mesiodens tends to develop later and shows incompletely developed roots (2). In the present study, the shape observed was mainly conical (72.9%), which corresponds well with the literature (3)(4)(5)(6)15,17,18).…”

“…In this series, 21.1% of the mesiodentes were partially or fully erupted, which is within range of percentages reported earlier (2,7,9).…”

“…Most mesiodentes remain impacted, but in approximately 25% of cases eruption occurs (2). In this series, 21.1% of the mesiodentes were partially or fully erupted, which is within range of percentages reported earlier (2,7,9).…”

“…The term mesiodens refers to a supernumerary tooth present in the midline of the maxilla between the two central incisors (1)(2)(3). Mesiodens can occur singly or multiply, and is responsible for disturbances in the eruption of maxillary incisor teeth (4).…”

Jumeaux et héritabilité des phénotypes dento-faciaux

“….) ont donné lieu à des rapports de cas chez des jumeaux MZ, ce qui renforce l'idée d'une transmission géné-tique [26,44,55,58,59]. …”