A regulating system comprises an input terminal for applying an input voltage, and an output terminal for providing an output voltage. A plurality of grooves are provided in the upper surface of the LiNbO3 substrate, and an IDT including a plurality of electrode fingers is provided and defined by a metal material filled in the plurality of grooves, and the metal material is made of Ag, Ni, or Cr or an alloy primarily including at least one Ag, Ni, or Cr. The RF signal may be sent by a remote control or a remote sensing device coupled with operation of home equipment. The N emitter region 104, the P channel region 103, and the P emitter region 100 are in contact with the emitter electrode 109. The invention teaches the application of an abradable composition to the nonretainingopposing dentition contacting surfaces of the appliance in order that specific wear patterns can be observed on the appliance following use by a patient.