Deciduous teeth

Deciduous teeth – commonly known as baby teeth, milk teeth, temporary teeth, and primary teeth – are the first set of teeth in the growth and development of humans and other diphyodont mammals. They develop during the embryonic stage of development and erupt (that is, they become visible in the mouth) during infancy. They are usually lost and replaced by permanent teeth, but in the absence of their permanent replacements, they can remain functional for many years into adulthood.