Darwin had his finches, Morgan had his fruit flies, and scientists today have cichlid fishes to trace the biological origins of jaws and teeth. In this week's issue of the journal PLoS Biology, ...

An extended childhood, a hallmark of human development, may have gotten off to an ancient and unusual start. One of the earliest known members of the Homo genus experienced delayed, humanlike tooth ...

The interaction between genetics and tissue environment shapes how individual teeth form in different regions of the jaw. While most experimental studies have focused on mandibular (lower jaw) teeth, ...

New research indicates that a mother's hormone levels during pregnancy, particularly stress-related ones like cortisol, may influence the timing of a baby's first tooth eruption. Higher maternal ...

ROSEMONT, Ill., April 15, 2026 /PRNewswire/ -- Most children grow 20 baby teeth and, eventually, 32 permanent ones. Some grow one more. An extra tooth that appears between the two upper front teeth is ...