A non-reciprocal circuit element capable of improving an isolation characteristic without increasing an insertion loss includes a permanent magnet, a ferrite arranged to receive a direct-current magnetic field from the permanent magnet, and first and second center electrodes disposed on the ferrite. The appliances are configured to be placed successively on the patient’s teeth and to incrementally reposition the teeth from an initial tooth arrangement, through a plurality of intermediate tooth arrangements, and to a final tooth arrangement. The support frame is assembled with the base frame, and includes a first and a second support frame portion pivotally connected with each other about a second pivot axis spaced apart from the first pivot axis, the first and second pivot axes being vertically aligned with each other. In the second fanout layer, below the voltage layer, the remaining signal pads escape.