How does tooth enamel last a lifetime?

Tooth enamel is the hardest substance in the human body, but, until now, no one knew how it managed to last a lifetime. The authors of a recent study conclude that enamel’s secret lies in the imperfect alignment of crystals.

How does tooth enamel last a lifetime?

Tooth enamel is the hardest substance in the human body, but, until now, no one knew how it managed to last a lifetime. The authors of a recent study conclude that enamel’s secret lies in the imperfect alignment of crystals.