Only a handful of mammals can regrow teeth multiple times, compared to the 50,000 species of reptiles and fish. Take geckos, for example, who will replace all 100 teeth, or so, every 3 to 4 months.

People with missing teeth may be able to grow new ones, say Japanese dentists testing a pioneering drug they hope will offer an alternative to dentures and implants. Unlike reptiles and fish, which ...

42% of children have dental caries in their primary teeth, with approximately 24% of them having on-going untreated decay.1 ...