Mission of Mercy helps nearly 2,000 to have a better smile By Dr. Stephanie McGann, DMD FAGD, Columnist, The Times Dentists on a mission. Th first weekend of the month was a busy weekend for dentists in Pennsylvania. On Friday, May 31 and Saturday, June 1, a special event occurred in Philadelphia.  A dental Mission of Mercy. This event, dubbed MOM-n-PA (mission of mercy in PA) took place at the Liacouras...