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Résumé

Cet article compare certaines variations occlusales dans la dentition primaire d’enfants de 3 ethnies majeures du Nigéria. Dans cette étude épidémiologique croisée entre 2 villes majeures du Nigéria, 269 enfants de 3 à 5 ans, étaient sélectionnés, soit 125 (46,5 %) garçons et 144 (53,6 %) filles des écoles maternelles. Seuls les enfants dont l’âge était confirmé étaient inclus dans cette étude utilisant le critère de FOSTER et HAMILTON pour évaluer les caractéristiques occlusales. Bien que des différences ethniques étaient observées dans les caractéristiques occlusales (overjet, overbite, occlusion occlusion croisée...) aucune n’a été statistiquement significative (P > 0,05).
Une étude prospective et longitudinale pourrait être intéressante afin de comprendre et d’analyser les développements occlusaux.

Abstract
Occlusion in the primary dentition. Part 2 : a comparison of some occlusal traits among pre-school children of the 3 major ethnic groups in Nigeria

This paper attempted to compare some of the other occlusal variations in the primary dentition of the children from the 3 major ethnic groups in Nigeria cross-sectional epidemiological study involving two major cities in Nigeria.
269, 3-5 year-old children from the 3 major ethnic groups in Nigeria consisting of 125 (46,5 %) males and 144 (53,6 %) females selected from pre-primary schools/centres. Only children with confirmed ages were included in the study and the criteria of Foster and Hamilton were used in assessing the occlusal features. 
Although some ethnic differences were observed in relation to the assessed occlusal features, overjet, overbite, cross bite, scissors bite and midline relationship, none was found to be statistically significant (P > 0,05). 
The occlusal features among the children from the ethnic groups do not differ significantly. Prospective longitudinal study could be worthwhile in further understanding their occlusal developments.