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Evaluation of Partial Denture Management RFID System Using a Simple Phantom Model

We had proposed a 920MHz/5.02GHz dual-use RFID system to detect the existence of partial dentures for both in-body/out-body conditions. In this paper, the communication range has been measured for in-body RFID communication at 920MHz by using a simple phantom model. The partial denture with RFID has been placed at 3 different points in the oral cavity of the phantom model. Communication range of 200mm from the surface of phantom has been obtained for almost all around the phantom. Whereas, we have had no response from the RFID tag implanted in the denture at all position in the phantom at 5.02GHz. We’ve also confirmed the response from the RFID tag when the partial denture is placed out-body at 5.02GHz. These results show the feasibility to distinguish whether the partial denture with dual-use RFID tag is in-body or out-body.