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Résumé

Pour évaluer le taux d'anomalies occlusives dans la ville d'Ibadan au Nigeria, une étude épidémiologique a été faite sur 644 collégiens âgés de 12 à 18 ans (moyenne d'âge : 14.73 ± 1.17 S.D.). Les échantillons consistaient à 341 (53 %) de garçons et 303 (47 %) de filles. Approximativement 66 % étaient de classe sociale moyenne alors que 34 % appartenaient à la classe des travailleurs. Les "articules inversés" avaient un taux élevé de 6.7 % et les "occlusions croisées" suivaient avec un taux de 2.2 %. Il n'y avait pas de relation statistique significative entre l'anomalie occlusive et la classe socio-économique (P>0.05). II n'y avait pas de relation statistique significative entre le sexe et l'anomalie (P > 0.05). Les taux d'anomalies occlusives étudiés étaient généralement bas comparés à ceux des enfants du nord du Nigeria.

Abstract
An epidemiological survey of occlusal anomalies among secondary school children in Ibadan, Nigeria

To assess the prevalence of some of the occlusal anomalies in Ibadan, Nigeria, an epidemiological survey of 644 secondary school children aged 1218 years (mean age, 14.73 ± 1.17 S.D.) was done. The sample consisting of 341(53%) males and 303(47%) females was randomly selected. About 66% were from the middle social class while 34% belonged to the working class. Scissors bite recorded the highest prevalence (6.7%) and cross bite was next with 2.2%. No statistically significant associations were found between the occlusal anomalies and socio-economic class (p>0.05). No statistically significant gender differences were found in relation to the anomalies (p>0.05). The prevalences of the occlusal anomalies studied were generally lower than those among northern Nigerian children.