Tooth Whitening Lozenge Patented by Cadbury
US Patent No. 8,388,938 B2, Cadbury Holdings Limited, Middlesex, UK, has patented a solid oral tooth whitening lozenge composition that is comprised of more than 75% by weight of solid material. The composition contains a water-soluble lozenge base, lozenge additives and a tooth-whitening agent comprising calcium pyrophosphate.
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