The enamel on your teeth is what makes them sparkle. It also acts as a protective coating on the teeth. From shutterstock.com September 6, 2019 Can we heal teeth? The quest to repair tooth enamel, nature’s crystal coat Arosha Weerakoon, The University of Queensland A recent study was the first to establish a way to regrow tooth enamel. But what is tooth enamel and why is it so important?