Effectiveness of iontophoresis with and without electric current and sodium fluoride on tooth hypersensitivity was evaluated. In eleven volunteers, teeth received a 2% neutral sodium fluoride solution applied using an electrode phoresor. Test teeth received the solution with current and control teeth received the solution without current. The subjects were tested at Day 0 and 7 by means of a mechanical stimulating device and a temperature probe. The data were then analyzed using X2 analysis. Statistically, the test teeth demonstrated more improvement than the control teeth.
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