Apparatus for dental treatment includes a base, a treatment unit, and a connecting piece. According to an example embodiment, the invention comprises a side wall enclosure formed from one or more sidewall panels and a floor panel coupled to the sidewall enclosure to define a receptacle for receiving an infant or child. 1% wt platinum, an amount of an attenuating metal which is no more than about 0. A second resistor is coupled between the gate electrode and a second input terminal. The hinge bearings are produced from a sintered material, with the bottom of the borided layer, which faces the base material, being provided with teeth. The individual projectiles are aligned when the explosive charge deploys the projectiles.