A radio frequency identification implanted in a tooth can communicate with the outside world.
A radio frequency identification (RFID) transponder covering the 13.56 MHz band was adapted to minimize its volume so that it could be placed in the pulp chamber of an endodontically treated human tooth. The minimized transponder had a maximum communication distance of 30 mm. In an animal experiment, the transponder was fixed in the cavity of a mandibular canine of a dog. An RFID reader positioned close to the dog's face could communicate with the transponder in the dog's tooth. In certain cases, the system is applicable for the personal identification procedures for hospitalized patients instead of an identification wristband.
Division of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry, Sendai 980-8575, Japan. hiro@ddh.tohoku.ac.jp
Hiroshi
H
Ishihata
Takeshi
T
Tomoe
Kotaroh
K
Takei
Tadahiko
T
Hirano
Kazuo
K
Yoshida
Shigeru
S
Shoji
Hidetoshi
H
Shimauchi
Hiroshi
H
Horiuchi
D000818:Animals; D040421:Cell Phone / Q000295:instrumentation*; D015921:Dental Implants; D004285:Dogs; D004867:Equipment Design; D019544:Equipment Failure Analysis; D010355:Patient Identification Systems; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013686:Telemetry / Q000295:instrumentation* / Q000379:methods
D015921:Dental Implants