Permanent teeth that have been extracted and grow back can be caused by stagnant milk teeth, wisdom teeth and root retention.
1. Retained milk teeth: some people’s milk teeth can not fall out during the replacement of milk teeth and permanent teeth, and grow until after 12 years old when the permanent teeth will be pressed under the milk teeth and not erupt, after the milk teeth fall out, the permanent teeth underneath will continue to erupt, so the teeth that are extracted may not be the permanent teeth but the milk teeth that have not been replaced.
2. Wisdom teeth growing horizontally: If the resistance of the teeth is lifted after the removal of the second molar, the wisdom teeth may gradually move towards the gums and be exposed in the mouth, this is not a permanent tooth that grows after extraction, but just a wisdom tooth that grows horizontally.
3. Root retention: If there is a root retention in the gums after tooth extraction, the root can float upward over time, feeling similar to growing teeth here, you need to go to the hospital as soon as possible to remove the residual root.
If you feel the tooth grows out again, you should go to the hospital in time for examination.