Kids usually have 20 baby teeth in their mouth once the full set has come in.

Quick Scoop

  • A full set of baby (primary) teeth = 20 teeth.
  • That’s 10 on the top and 10 on the bottom.
  • As they grow, those 20 baby teeth are gradually replaced by up to 32 permanent (adult) teeth.

Little extra context

Most kids finish getting all 20 baby teeth by about age 3, then start losing them around age 6 as the adult teeth come in. By the early teen years, many children have around 28 permanent teeth, with the last 4 wisdom teeth (if they develop) coming in during later teens or early adulthood.

Information gathered from public forums or data available on the internet and portrayed here.