Is there some evolutionary advantage to two sets of teeth?
From a biological standpoint, why do we have baby teeth and then lose them to make room for adult teeth?
Baby teeth are softer in composition than adult teeth. Therefore it takes less minerals to form baby teeth allowing the body to use the minerals to form other essentials such as bones, which grow very rapidly. As the adult teeth form they usually will help push baby teeth out of the way. The stronger teeth are required to compensate for stronger biting pressure and more solid foods.
Reply:Because baby teeth have to be small, to fit into the child's jaw. If we kept the baby teeth there would then be big gaps between the teeth as an adult.
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