How to apply the dental prosthesis Clean and dry your dental prosthesis. Apply in three small short strips not too close to the edges and end of the dental prosthesis. Rinse your mouth before placing your dental prosthesis. Adjust the dental prosthesis in the mouth, press firmly and bite for a few seconds to ensure fixation. How to remove the dental prosthesis Rinse your mouth with water. Remove the dental prosthesis slowly with rocking movements. Remove remnants of fixative cream from the mouth and prosthesis with warm water and a soft brush. Use cleaning pads or foam to clean the dental prosthesis.