Kids typically lose 20 teeth in total — all of their baby (primary) teeth fall out and are replaced by permanent ones during childhood and the early teen years.

Quick Scoop: How Many Teeth Do Kids Lose?

Most children have:

  • 20 baby teeth that eventually become loose and fall out.
  • These are replaced by up to 32 permanent teeth (including wisdom teeth that may appear in late teens or early adulthood).

So the simple answer to “how many teeth do kids lose?” is: all 20 of their baby teeth.

Mini Timeline: When It Usually Happens

  • First wiggly teeth: around ages 5–7, usually the lower front teeth.
  • Most baby teeth gone: by about 12–13 years old.
  • New permanent smile (not counting wisdom teeth): about 28 teeth in place by early teens.

Every child is a bit different, but this is the common pattern described by pediatric dental sources.

Why It Matters For Parents

  • Losing baby teeth makes space for larger, stronger adult teeth and supports proper jaw growth and speech.
  • Good brushing, flossing, and regular checkups during these years help the permanent teeth come in healthy and well-aligned.

If you ever notice teeth falling out very early, very late, or in an unusual pattern, dentists recommend a checkup to rule out crowding, extra teeth, or other issues.

TL;DR: Kids lose 20 baby teeth over childhood, usually starting around age 6 and finishing by the early teens.

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