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PETERSON AIR FORCE BASE, Colo. - Airman 1st Class Louis Lee, 21st Dental Squadron dental laboratory technician, equilibrates the cast of a patient’s mouth at the dental laboratory March 25, 2017, Peterson Air Force Base, Colo. Occlusal equilibration is a gentle procedure that allows lower teeth to contact upper teeth evenly throughout the mouth. (U.S. Air Force photo by Robb Lingley)