To provide a plate denture capable of identifying its wearer regardless of the state of the wearer.

In a plate denture 20, information for identifying a wearer is stored and a transmission element T for transmitting the information as a radio signal is built in an artificial tooth 22a which is supported by a denture base 21. The artificial tooth 22a is formed in a different color from other artificial teeth 22 supported by the denture base 21 so that it can be determined at a glance whether a person wears the plate denture 20 with the built-in transmission element T even when the wearer is not capable of conversing. Therefore, it is possible to remove the plate denture 20, specify the artificial tooth 22a with the built-in transmission element T, and read the information as the artificial tooth 22a is kept close to a reader.