An improved dental appliance system, and methods for using and fabricating the improved appliance, including a polymeric overlay or shell having a teeth-receiving cavity formed therein and a wire mounted on or embedded in the polymeric shell. Each of the cell read current generators generates a cell read current from each of a plurality of memory cells. A prediction value corresponding to said pixel is searched for. A barrier layer lines the channel opening. The user’s hands are thereby freed for other tasks than carrying the detector. A transmission link including the combination of a SMF and the present invention DCF is also disclosed.