A device is provided for preventative and acute treatment of teeth and gums, with a handle and a treatment element mounted on the handle for insertion into the mouth of a patient, comprising an axis of rotation perpendicular to the longitudinal direction of the handle. The first conductive layers are connected to a first auxiliary electrode and the second conductive layers are connected to a second auxiliary electrode. The method for making the squared face involves removing light and dark butt trim and a rump point to form a generally flat surface. These sampled images of scatter are processed to form the scatter correction image. The cartridge is self contained and includes a cartridge housing 28 for positioning in the elongated opening of the coupler housing, at least one safety cable assembly 30 positioned in said cartridge housing, and spring 20 surrounds the cable 31 and biases the distal end 30 of the cable toward the cartridge housing. The semiconductor device and an integrated circuit are in the antenna switch module.