Staff Sgt. Jina Rosales, 28th Medical Operations Squadron dental laboratory technician, removes scratches from an interim removable partial denture with water and pumice in the dental lab at Ellsworth Air Force Base, S.D., Feb. 14, 2012. The lab supports the dental clinic in preparing solutions for dental care of various severities to help Airmen stay comfortable and mission ready. (U.S. Air Force photo by Airman 1st Class Kate Thornton/Released)