Light hardening device and method for hardening a polymerizable mass for dental applications
US6835064B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2002 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Jul 23, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C19/004
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A light hardening device is provided for hardening a light hardenable mass applied for dental purposes that has a first light emitting diode for emitting light at a range of intensities corresponding to a set of wavelengths which at most only partially overlap a range of light sensitivities of a photo initiator comprised in the mass. The light hardening device also includes a second light emitting diode for emitting light at a range of intensities corresponding to a set of wavelengths which overlap the set of photo initiator light sensitivities to a relatively greater extent than the partial overlap of the range of first light emitting diode intensities with the range of photo initiator light sensitivities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.