The present invention relates to a saliva measuring body for verifying a biometric characteristic of a wearer of a denture and a method of filling a dent of an information discriminating body, which is capable of recognizing the saliva characteristics of the human body to recognize biological characteristics, , The information of the wearer's health can be confirmed immediately in case of an emergency such as a potential dementia patient or a general history of a hospital history, A part of the opaque resin part 3 of the finished denture or the partial denture is cut several times by a milling machine to form a recessed part removing part 10 so as to be stably and stably attached to the opaque resin part (S1)； The partial deletion unit 10 inserts an information identifying body 20 including a saliva measuring unit 120 for recognizing the saliva characteristic of a human body and recognizing biological characteristics and an identification unit for recognizing health information and personal information, The upper surface of the saliva measuring unit 120 and the upper surface of the information identifying unit 20 are positioned lower than the surface of the opaque resin unit 3 and the side surfaces of the saliva measuring unit 120 and the information identifying unit 20 The information identifying body 20 is provided with a personal identification information including a name, a blood type, a telephone number, a resident registration number, and a hospital history of the elderly person or a dementia patient, (IBeacon) for recognizing the position of a QR code, an NFC chip or an object to which the personal information is stored, and the saliva measuring unit 120 and the information identifying unit The entire outer surface is protected with the protective layer 21, A second step (S2) of forming a plurality of electrodes； The calibration powder and the liquid are injected into the partial deletion unit 10 in which the saliva measurement unit 120 and the information i
