The hardest tissue in the human body is tough enough to resist dents, yet elastic enough not to crack during decades of jaw smashing. It’s so incredible that scientists haven’t created a substitute that can match it—until now. https://www.science.org/content/article/new-artificial-enamel-harder-and-more-durable-real-thing
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It sounds like our teeth might actually outlive us. Just something else to decide which grandchild to leave them to.