Megan Thielking recently published an article on the interesting topic of “Why Can’t Teeth Heal Themselves”? Here’s what she had to say: Getting a cavity is an unpleasant experience — and a painful reminder that teeth, unlike bones, can’t heal themselves once they’re damaged. Cavities are the product of this tug-of-war that’s happening every day in our mouths. Acid from sugary, starchy foods wears down the super-hard minerals that form the enamel of our teeth. Saliva lowers the pH in our mouths and helps build that enamel back up. But when there’s too much sugar for the saliva to contend with, a cavity forms. And once your tooth has eroded, there aren’t any living cells to swoop in and undo the damage. In the new episode of Boddities, I investigate how teeth get harmed and why they can’t heal — watch here.