Patent ID: 6331113
Filing Date: 2001-12-18
Classification: A61C,G01J

Abstract:
A method of whitening a patient's teeth, the method comprising:acquiring a pre-whitening image of the patient's teeth containing first normalization references before whitening the patient's teeth;normalizing said pre-whitening image in accordance with said first normalization references contained therein;standardizing said normalized pre-whitening image by matching said normalized pre-whitening image to selected shade standards;whitening the patient's teeth;acquiring a post-whitening image of the patient's teeth containing second normalization references;normalizing said post-whitening image in accordance with said second normalization references contained therein;standardizing said normalized post-whitening image by matching said normalized post-whitening image to selected shade standards; andcomparing said standardized pre-whitening image with said standardized post-whitening image.