| 摘要 |
<p>The apparatus according to the invention is of the type comprising a source of autonomous direct current, of which each of the poles is connected to an electrode capable of being placed in the oral cavity, and the apparatus is characterised in that it consists of a dragee of general parallelepipedic shape which is flattened and has very rounded edges and comprises, on two opposite parallel main faces (2, 2'), a disc (3, 3') made of conductive material, each of the discs being connected to the poles [lacuna] a battery supplying a direct current and embedded in a hermetic seat (4) within the said dragee. The dragee is made of strong and alimentary resin (methacrylate) and the discs forming the electrodes are made of stainless steel; the dragee consists of two halves made integral by ultrasonic welding. <IMAGE></p> |
