Agenesia of the third molars in patients of the Faculty of Odontology of the National Autonomous University of Mexico

Authors

  • Raúl Díaz Pérez Facultad de Odontología. Universidad Nacional Autónoma de México.
  • Dulce Haydée Gutiérrez Valdez Facultad de Odontología. Universidad Nacional Autónoma de México.
  • Aracely Macías Mayeya Facultad de Odontología. Universidad Nacional Autónoma de México.

Keywords:

third molar, frequency, agenesia

Abstract

ANTECEDENTS: the third molars are the last teeth to erupt. Their presence generate diverse pathologies as crowding, pericoronitis and pain, generally due to the lack of space in the maxillae. According to human phylogeny, they are considered teeth on the way to extinction. They present an increasingly delayed eruption and even absence due to lack of formation, OBJECTIVE: to determine the frequency of agenesia of the third molars in patients of the Faculty of Odontology of the National Autonomous University of Mexico. METHODS: 915 orthopantomographies of patients aged 16-24 were examined and the diagnosis of presence of the third molars was made. Sociodemographic information was necessary and the association with sex was analyzed by using X2. RESULTS: 20 % of the sample presented agenesia of the 4 third molars, 56 % had the 4, and 24 % only from 1 to 3. Besides, it was found that sex does not determine the presence of the third molars (X2= 0.503, p= 0.478). CONCLUSIONS: the frequency of agenesia of the third molars was 20 % and it is independent of sex.

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Published

2008-08-15

How to Cite

1.
Díaz Pérez R, Gutiérrez Valdez DH, Macías Mayeya A. Agenesia of the third molars in patients of the Faculty of Odontology of the National Autonomous University of Mexico. Rev Cubana Estomatol [Internet]. 2008 Aug. 15 [cited 2025 Feb. 7];45(3-4):77-81. Available from: https://revestomatologia.sld.cu/index.php/est/article/view/2595

Issue

Vol. 45 No. 3-4 (2008): JUL- DEC

Section

Research Article

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