Variation of Permanent Teeth Crowns in Three Nigerian Ethnic Populations
- PMID: 35381844
Variation of Permanent Teeth Crowns in Three Nigerian Ethnic Populations
Abstract
Background: Tooth variation within populations is important for anthropologists and dentists. The objective was to compare crown dimensions among three Nigerian ethnic populations.
Materials and methods: An electronic caliper was used to measure mesiodistal and buccolingual tooth width of maxillary and mandibular permanent teeth except third molars from study casts of 132 Nigerian subjects with a mean age of 19.03 ± 4.27 years. The Hausa sample was 50 (37.9%) subjects (25 males and 25 females); the Yoruba population was 50 (37.9%) subjects (15 males and 35 females) and the Igbo sample was 32 (24.2%) subjects (16 males and 16 females). Single teeth and sums of groups of teeth were compared between males and females within and among the three populations using analysis of variance.
Results: The findings indicated that (1) differences between antimeres are of small magnitude and of no statistical significance; (2) Significant gender differences in tooth dimension was observed with Yoruba and Hausa males having significantly larger teeth but a significant gender difference was only observed for mesiodistal width of the maxillary second molars in the Igbo population; (3) there is a greater similarity among Yoruba and Igbo subjects with differences from their Hausa counterparts with a magnitude considered statistically and clinically significant.
Conclusion: The crown dimensions of Hausa males and females were significantly smaller than their Yoruba and Igbo counterparts. There were similarities in crown dimensions between Yoruba males and females and their Igbo counterparts. Sexual dimorphism of crown size was observed in the three ethnic groups.
Contexte: La variation incisive dans une population est tres important chez les anthropologues et les dentiste. L’objective de cet oeuvre c’est de comparer les dimensions des couronnes parmi les trios populations ethniques du Nigeria.
Materiel et methodes: Une coulisse electronique a ete utilise pour measure la mesiodistale et le largeur des dents buccolingue de maxilaire et mandibulaire des dents permanent excepte le 3eme molaire, d’apres l’etude sur 132 Nigerians avec un age moyen de 19.03 ± 4.27 ans.L’echantillon des Haoussas etaient 50 (37.9%) sujets (25 males et 25 femelles); la population des Yoruobas etaient 50 (37.9%) sujets (15 males et 5 femmes) et l’echantillon des Igbos etaient 32 (24.2%) sujets (16 males et 16 femmes) des dents individuels et le total de groupe de dents a ete compare entre les hommes et les femmes des trois populations utilisant l’ analyse de variance.
Resultats: Le resultat a indique que (1) les differences entre les antimeres sont de peu magnitude et n’ont pas de signification statistique; (2) La signification de difference de gendre dans la dimension de dent a ete observe chez les males Yoruoba et les males Hauossa qui ont des dents plus large mais une difference de gendre significative a ete observe seulment pour le largeur mesiodistal du second molaire maxillaire dans la population des Igbos ; (3) il y a une grand similarite entre les sujets Yoruobas et Igbos en comparaison a leurs voisin Haoussa avec une magnitude considere statistiquement et cliniquement significative.
Conclusion: Les dimensions des couronnes des dents de males et femmes Hauossa etaient plus petit en comparaison aux Yoruoba et Igbo . Il y avaient des similarities dans la dimension de couronne des males et femmes Yoruoba et les Igbo . Le dimorphisme sexual de la taille de couronne a ete observe dans les trios groupes ethniques.
Most cle: La difference de gendre; l’Anatomie dentaire; Le Nigeria; La population genetique.
Keywords: Dental Anatomy; Gender Differences; NIgeria; Population Genetics.
Copyright © 2022 by West African Journal of Medicine.
Conflict of interest statement
The Authors declare that no competing interest exists.