Tooth-whitening process
US10099064B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2016 |
| Grant date | Oct 16, 2018 |
| Priority date | — |
| Expiry date | Jan 7, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/0663
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tooth-whitening process includes providing an array of LEDs disposed in a first plane and forming an inner arc having an inner focal point and an outer arc having an outer focal different from the inner focal point; applying a whitening composition to at least the anterior surfaces of at least six mandibular or maxillary anterior teeth and maintaining the whitening composition on the at least six teeth for a first time period; after the first time period, directing a light radiation comprising blue visible light or near-visible UV light of at least a threshold intensity from the least a first array of LEDs for a second time period to the anterior surfaces of the at least six teeth, the first time period having a duration greater than 50% of a total duration of the first time period and the second time period; and removing the whitening composition from the at least six teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.