By Dr. Stephanie McGann, DMD FAGD, Columnist, The Times In the last few days the extreme cold temperature of the northeast has frozen pipes, chilled the soul and made people with sensitive teeth frown. When even smiling in the cold is too much for the teeth it’s a real concern. So many times we are asked what can be done. This month I am going to go over some tips to help keep those winter smiles. It’s...