| 摘要 |
<p>The invention concerns a dental treatment device comprising a handpiece (19) supplied with irrigation liquid and an electro-analgesia apparatus (5), electrically connected to a patient's body (7), via the handpiece, for applying thereto an electric current with adjustable power through the handpiece (19). Said device is characterised in that the electrical path which extends between the electro-analgesia apparatus (5) and the patient (7), via the handpiece (19) comprises at least a portion wherein the conductivity is provided by the irrigation liquid.</p> |
