Remineralizing/mineralizing oral products having improved whitening and stain removal properties
US6303104A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1999 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Feb 12, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/88
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An oral product, preferably a toothpaste, effective for remineralizing subsurface dental lesions, mineralizing exposed dentinal tubules and whitening teeth stained with discoloring residues containing heavy metal ions such as Fe.sup.+3, Mn.sup.+2 and Cu.sup.+2, is composed of a first discrete part composed of a water-soluble or partially water-soluble calcium salt and optionally a non-toxic, non-calcium water-soluble divalent metal salt, and a second discrete part composed of a water-soluble orthophosphate salt and preferably a water-soluble fluoride salt. Further enhanced stain-removing properties without excessive abrasivity are imparted to the oral product when part (A) further contains an effective amount of an anhydrous dicalcium phosphate abrasive and part (B) further contains an effective amount of a silica abrasive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.