ScienceGlobal issuesDentists offer professional prophylaxis - but isn't DIY easier?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceGlobal issues07/22/2021July 22, 2021Nail files and hydrogen peroxide are touted as ways of improving the appearance of teeth. What are the risks of going it alone at home? In Good Shape asks a professional.https://p.dw.com/p/3xnoPAdvertisement