Development of new dental care has been strongly desired. This new pioneering technology must be innovative content.　This time, some is not in the medical field, and then propose the following items with the aim of great development of the future of the dental office. 1) An automatic drug injection system that injects drugs into the body from a prosthesis in an emergency, 2) Intraoral treatment with phototoxicity-inducing substance, 3) Substitute for the eye using "Denture Camera", 4) Information system utilizing cavities in teeth and dentures.