What to Expect during Dental Development
  • A child's first set of 20 teeth are called baby, primary,
    or deciduous teeth. As these teeth fall out, they are
    replaced by 32 permanent, adult, or secondary teeth. Both
    primary and permanent teeth usually erupt (break through the gums) in a specific order, but the timing of eruption can vary by 1 or more years.

  • Generally, from about 6 months on, children get four new teeth every four months. Most children have all 20 baby teeth by age 2 to 3 years. The first permanent teeth, the 6-year molars erupt behind the second baby molars. This usually happens around the same time the lower front baby incisors are beginning to loosen and fall out. Most children have lost all baby teeth by the age of 13 years.

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