EE was changing out belt rollers on the 4th 54 NE belt. In order to do this, EE was using a pry bar to lift the belt up and off the belt rollers. As EE was pulling down on the pry bar to lift up the belt, the pry bar slipped off and caused EE to hit self in the mouth. The impact of EE's fist knocked out one of EE's front lower teeth.