Human teeth don't regrow, but enamel protects them
Human teeth can't regrow like some animals', but their incredibly hard enamel layer provides vital protection against daily wear and tear, emphasizing preventive care.
Unlike sharks, humans can't regrow lost or severely damaged teeth. Once a permanent tooth is gone, dental procedures are needed. However, our teeth boast enamel, the hardest substance in the human body. This thin, crystalline outer layer shields against the daily grind of chewing, which can exert forces up to 162 pounds per square inch. Composed mainly of hydroxyapatite, enamel resists abrasion and acid, preventing rapid wear and decay of the softer dentin beneath. This highlights the critical role of preventive dental care, as enamel doesn't repair itself. Future stem cell research offers hope for tooth regrowth, potentially revolutionizing dentistry.