Skip to Main content Skip to Navigation
Master Thesis

Prévalence d'agénésie de dents permanentes chez l'Homme moderne : une étude rétrospective à partir d'orthopantomogrammes d'enfants français

Abstract : Tooth agenesis, or hypodontia, is a developmental anomaly resulting in the absence of at least one permanent tooth. The prevalence of hypodontia shows variations between populations, from 2,6% to 13,4%, and from 5% to 56% for wisdom teeth. Our retrospective study conducted in 2020/2021 included 2120 panoramic radiographs of children aged 8 to 14 years-old, from two different French general practice and orthodontic patient populations. Only children older than 11 years-old were studied regarding wisdom teeth data. The aim of the study is to measure the prevalence of hypodontia in this sample, and to explore the possible evolution of this anomaly within our species. A prevalence of 23% was found regarding wisdom teeth, and 7,5% regarding other teeth. The risk is higher in female subjects as well as in individuals who have a sibling already affected by the anomaly. The prevalence of hypodontia of other teeth is twice as high in patients with wisdom tooth agenesis. Analyses of tooth distribution and severity of the hypodontia were also conducted. Unfortunately, too few paleolithic data are available to properly conclude that there has been a real increase in hypodontia in the modern era. More targeted epidemiological and genetic studies need to be initiated in order to exclude simple species variability, and potentially prove that hypodontia is a sign of evolution in Homo Sapiens.
Complete list of metadata

https://dumas.ccsd.cnrs.fr/dumas-03274487
Contributor : Frédérique Gambade <>
Submitted on : Wednesday, June 30, 2021 - 10:40:28 AM
Last modification on : Friday, July 9, 2021 - 3:48:02 AM

File

Odonto_2021_Cazorla.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : dumas-03274487, version 1

Collections

Citation

Kildine Cazorla. Prévalence d'agénésie de dents permanentes chez l'Homme moderne : une étude rétrospective à partir d'orthopantomogrammes d'enfants français. Sciences du Vivant [q-bio]. 2021. ⟨dumas-03274487⟩

Share

Metrics

Record views

5

Files downloads

3