Dental aid
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United States of America Patent
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-
Dec 13, 1994
Grant Date -
N/A
app pub date -
Oct 17, 1991
filing date -
Feb 20, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A toothbrush (10) for applying an electrical stimulus to the gingival region has an electrode (40) on the handle and an electrode (22) having nibs (24) at the base of the bristles (20). Electronic circuitry (28) is housed in the handle (14) for applying a bipolar voltage waveform, which is preferably a square wave of about 50 Hz, across the electrodes (22,40). A device such as an LED or buzzer is provided for indicating when the toothbrush is switched on.
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