High-throughput method for detecting tooth stain prevention and removal
US10744226B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Dec 8, 2017 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Dec 8, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/62
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Provided are methods of detecting tooth stain prevention and/or removal comprising the steps of providing pellicle-coated hydroxyapatite particles, contacting the particles with a first solution and then a second solution, wherein the first solution is either a test solution or a stain solution and the second solution is the other of said test solution or stain solution, separating from the resulting particles a liquid comprising stain introduced in the contacting step b), and measuring the UV-Vis absorbance of the separated liquid to determine the amount of stain in the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.