The Philippine Dental Association (PDA) invites dentists to participate in the 11th National Dental Health Month photo contest, themed 'Nakangiti ang Kinabukasan, Kapag Ngipin ay Pinangangalagaan', scheduled for February 1, 2015. Entries must be original and submitted by January 5, 2015, with detailed participation rules outlined in the document. Winning entries will be recognized during the event, with prizes awarded for top submissions in both black and white and colored categories.