The aim of this study was to investigate the number of emerged primary teeth at various ages from 6 to 24 months in 1347 longitudinally followed Pakistan infants sampled from four socio-economically different areas in Lahore, Pakistan; from a very poor periurban slum to a privileged upper middle class group. The emergence of the primary teeth was found to be little, or not all related to sex or to the area of living. However, in comparison with studies conducted in other continents, the Indo-Pak subcontinent population lags behind in primary teeth emergence, especially in early life. This genetic difference makes it necessary to create specific standards of primary teeth emergence for this population.