Can human tooth regrow?

Humans typically have two sets of teeth in their lifetime: 20 primary (baby) teeth that are replaced by 32 permanent (adult) teeth, including wisdom teeth, which erupt later.

Children develop 20 primary teeth, which start erupting around 6 months of age and are usually all in place by around 3 years old.

As children grow, these primary teeth are gradually shed and replaced by 32 permanent teeth, starting around age 6 and continuing until the early teens.

The last teeth to erupt are the third molars, also known as wisdom teeth, which typically emerge between the ages of 17 and 21, although this can vary.

Humans cannot naturally regrow lost teeth, and tooth enamel cannot be rebuilt.

For missing teeth, options include dental implants, bridges, and dentures.

Researchers are investigating drugs that target proteins like USAG-1, which suppresses tooth growth, to potentially stimulate new tooth formation.

Stem cell research holds promise for regenerating tooth tissues, bones, and dental pulp.

Japanese researchers are conducting human trials with a drug that could potentially regrow teeth, starting with healthy adults missing molars.

While still in the early stages, these advancements offer hope for a future where tooth regeneration becomes a reality.