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Related Experiment Videos

Mesiodentes: incidence, morphology, etiology

A Stellzig1, E K Basdra, G Komposch

  • 1Poliklinik für Kieferorthopädie, Klinik für Mund-, Zahn- und Kieferkrankheiten, Universität Heidelberg.

Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopadie : Organ/Official Journal Deutsche Gesellschaft Fur Kieferorthopadie
|January 1, 1997
PubMed
Summary

Inheritance plays a key role in the development of mesiodentes, a common supernumerary tooth. This study also suggests genetic links between mesiodentes and other dental anomalies.

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Area of Science:

  • Dentistry
  • Genetics
  • Developmental Biology

Background:

  • Mesiodentes are supernumerary teeth located in the anterior maxilla.
  • Etiology of mesiodentes is not well understood, despite extensive research on clinical aspects.
  • Previous studies have focused on treatment rather than causes.

Purpose of the Study:

  • To investigate the etiologic factors contributing to mesiodentes development.
  • To evaluate the role of inheritance and potential links to other dental anomalies.
  • To explore theories regarding tooth bud development in relation to mesiodentes.

Main Methods:

  • Retrospective analysis of 30 patients with 45 mesiodentes.
  • Assessment of familial disposition and inheritance patterns.

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  • Comparison of dental anomalies and tooth morphology.

    • Main Results:

    • A familial disposition was observed in 31% of patients, indicating a significant role for inheritance.
    • Findings support a link between mesiodentes and other anomalies like hyperdontia, hypodontia, and cleft lip/palate.
    • Gemination of a deciduous incisor and altered central incisor width were noted, supporting the dichotomy theory.

    Conclusions:

    • Inheritance is a significant etiologic factor for mesiodentes.
    • Mesiodentes may share common etiologic pathways with other dental and craniofacial anomalies.
    • The dichotomy theory, involving tooth bud splitting, is favored over dental lamina hyperactivity for mesiodentes development.