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US 4,661,070 AGranted
Method for bleaching discolored teeth
OwnerJoshua Friedmaninventor
Life of this patent
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Abstract
A method for bleaching stained teeth by applying a concentrated solution of peroxide to the stained teeth and focusing a beam of light at the teeth with the beam containing the combination of ultraviolet and infrared energy for activating the peroxide solution.
Claims6
A method for treating discolored teeth comprising the steps of:
- applying a concentrated solution of peroxide to the pulp chamber of non-vital teeth and/or upon the surface of discolored teeth within the mouth of a dental patient;
- focusing a beam of optical energy directly upon each discolored tooth to be treated, with said beam containing ultraviolet energy in the 320 to 420 nanometer range in combination with infrared energy in the 700 to 1200 nanometer range for activating said peroxide solution;
- and
- substantially suppressing optical energy in the 500 to 700 nanometer range from reaching the teeth under treatment.
1 more element
Dependencies are inferred from the claim text.