Eruption age of teeth in Nigeria.

Present study was carried out on 1,022 boys and 646 girls of various age groups. In this study, an attempt has been made to estimate the eruption age of teeth in various age groups, ranging from 6 to 23 years in Northern Nigerian population. From the data collected a mean have been provided for the eruption age of each tooth. The differences noticed in the eruption ages between boys and girls are not very marked. However, a few points of interest may be mentioned. The lateral incisor, first premolar and Canine erupt earlier amongst girls. The first molar and the central incisor seem to erupt earlier among boys than girls. The teeth of the lower jaw erupt before those of the upper jaw. The Nigerian's wisdom teeth erupt with some constancy between 14-21st years. The third molar tooth fails to erupt in 5% individuals. The second premolar was absent in 0.5% populations.