At what age do children finish replacing their baby teeth?

May 13, 2023 Source: Cainiu Health
Dr. Liu Chao
Introduction
In general, children finish replacing their teeth around the age of 12, whereas adults are different. The growth, development, and replacement of teeth is a long-term process that typically begins in infancy and ends in adolescence. During this process, both the number and morphology of teeth undergo changes, with tooth replacement being one part of it. Primary teeth start to erupt between 6 months and 1 year after birth.

Generally, teeth will finish being replaced by around the age of 12. The details are as follows:

The growth, development, and replacement of teeth is a long-term process that typically begins in infancy and ends during adolescence. Throughout this period, both the number and shape of teeth undergo changes, with tooth replacement being an essential part of this process. Primary (baby) teeth usually begin to erupt between 6 months and 1 year after birth and remain until about age 3, after which they gradually give way to permanent teeth. Permanent teeth start emerging around ages 6–7 and continue growing in until approximately 18–25 years of age, by which time most teeth have fully come in. The exact timing of complete tooth replacement varies from person to person, but under normal circumstances, all baby teeth are replaced by permanent ones by around age 12. Provided there are no unusual conditions, adults will have all their permanent teeth and will not experience further natural replacement.

However, if tooth loss occurs due to oral diseases, accidental injury, or other causes, dental restoration or implantation may be necessary to restore oral health and proper dental function. It's important to use teeth properly, maintain good oral hygiene, and avoid habits that could compromise dental health.

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