https://www.washingtonpost.com/news/to-your-health/wp/2016/07/05/could-your-cavity-filled-tooth-repair-itself-with-stem-cells-in-the-future/?_hsenc=p2ANqtz-8ajc_NRJqivKXyePL9ffQtdhntUc10GMONVyORy6k3LiD0eNrbWDU12zeDRmCNeuPvhUa417xwca_5dmHTL9dMhv5K5g&_hsmi=31344233&utm_campaign=KHN%3A%20Daily%20Health%20Policy%20Report&utm_content=31344233&utm_medium=email&utm_source=hs_email

Since the 1700s, when modern dentistry began to evolve, people have assumed that the parts of teeth damaged by cavities were gone for good and that there was nothing to be done except drilling out the decay and filling the remaining tooth with some kind of enamel or metal. That entire paradigm is changing.