An assembly of the present invention has an integrated circuit device electrically and mechanically connected to the substrate. The light with which the irradiation procedure is effected includes at least one wavelength component that is absorbed or scattered by the tooth filling material differently from the tooth material in such a way that the tooth filling material differs from the tooth material in respect of its brightness or in respect of its colour. The information storage device is adapted for transmitting a signal comprising information. The closure member may also include a plurality of low friction bearings disposed on the stem on opposite sides of the seal and backup ring assemblies, and may also include a trunnion bearing disposed on a lower trunnion of the closure member.