By Dr. Stephanie McGann, DMD FAGD, Columnist, The Times If you never heard of tongue scraping – you are not alone. While it’s been a standard go-to therapy in bad-breath treatment for years, most of us never really paid a lot of attention to our tongues.  So let me explain what it’s all about. Just imagine that cold winter day (the one we are all dreading) … as you stand at the door,...