Oral care particles and system for the administration thereof
US11185489B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2018 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Mar 23, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/92
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed is a system and method for the delivery, into interdental spaces, of oral care active agents contained in particles. The particles are made of one or more superabsorbent polymers (SAP), and are of size generally small enough to be easily applied into an interdental space. To this end, the particles typically have a length of below 1.5 mm. By virtue of the SAP's ability of absorbing several times its own weight in water, the particles will swell once in contact with saliva. As a result, the volume of the particles as applied in between teeth increases by at least eight times, thereby effectively making the particles larger than the average interdental gap size. The particles, once swollen, are thus held more firmly between the walls of the interdental space, thus preventing them from being easily washed away.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.