FLUORIDE IONTOPHORESIS

lontophoresis is a method of electrically transporting ionic particles into hard or soft tissue. Fluoride, which is such an ionic particle, is negatively-charged. Therefore, when an electrical potential is applied, fluoride ion would be repelled from the negative electrode (cathode) and attracted to the positive (anode).

The device comprises of an electrolyte ,

a positive terminal adapted for electrical contact with said body;

a negative terminal in electrical contact with said electrode; and

a current conduction means for permitting an intermittent direct current to flow between said positive and negative terminals, said current conduction means generating an intermittent direct current having a waveform which reaches a maximum level immediately after the current conduction is started and thereafter decays in time. 

THIS TECHNIQUE IS USED AS A TREATMENT FOR DENTINAL HYPERSENSITIVITY
                                                                     

                                                          REF : J Dent Res 63(6):897-900, June, 1984