| 摘要 |
Some embodiments of the present invention provide an apparatus comprising: a) a root canal electrode insertable into the root canal of a tooth of a patient; b) a control unit including: i) a housing; ii) a current generator having a first terminal and a second terminal, the current generator being operative to produce a time varying current having a frequency of at least about 50 KHz and at most about 300 KHz between the first and second terminals, the current generator being deployed within the housing of the control unit; and iii) a detection element configured to sense an impedance-related parameter between the first and second terminals of the current generator, the detection element being deployed within the housing of the control unit; and c) an electrode patch detachably attached to the control unit, the electrode patch having a body-contactable surface that: i) is skin adhesive and ii) includes an electrically conductive region, the electrically-conductive region being in electrical contact with the first terminal of the current generator; and d) a wire (for example, an insulated wire that is at least 10 cm or at least 20 cm long) connecting the root canal electrode to the control unit such that the root canal electrode is in electrical contact with the second terminal of the current generator.
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