Animals including sharks and some reptile species can continuously regrow teeth. It’s been assumed that humans only grow two sets of teeth in their lifetime, but in fact, there is evidence that we also have the “buds” for a third set.
When treatment of teeth is no longer possible due to severe cavities or erosion of the dental sockets, known as pyorrhea, people lose them and need to rely on dental appliances such as dentures. The ability to grow third-generation teeth could change that. “In any case, we’re hoping to see a time when tooth-regrowth medicine is a third choice alongside dentures and implants,” Takahashi said.
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