US6318996B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for curing a dental composition using a light emitting diode
Assignee: PHOTONIC CURING LLC
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Filing: 1999-10-05
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Granted: 2001-11-20
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Expires: 2019-10-05
Abstract
Abstract A dental composition curing method and device for exposing a dental composition to a beam of radiation emitted by a light-emitting-diode (LED) positioned proximate the composition, LED radiation being more efficient than the conventional use of filtered white light or laser radiation.
Inventors
- 👤 Noureddine Melikechi
- 👤 Ranjit Dinkar Pradhan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:56
CPC Classifications
A; A61; A61C; A61C5/00; A61C19/00; A61C19/003; A61C19/004
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
113 words
A method for curing a dental composition suitable for repairing a dental cavity or a dental surface comprising: applying the dental composition to the cavity or surface; and, exposing the composition to radiation from a light emitting diode having output wavelengths selected to photo-activate a hardening chemical reaction within the composition, wherein the light emitting diode is operated at a power output in the range of about 25 mW/cm 2 to about 38 mW/cm 2 , wherein the dental composition comprises a photo-curable composition, the light emitting diode is positioned a distance of about 7 mm±2 mm from the dental composition, and wherein a depth of cure of about 3 mm is achieved.
Claim 2
Independent Claim
113 words
A method for curing a dental composition suitable for repairing a dental cavity or a dental surface comprising: applying the dental composition to the cavity or surface; and, exposing the composition to radiation from a light emitting diode having output wavelengths selected to photo-activate a hardening chemical reaction within the composition, wherein the light emitting diode is operated at a power output in the range of about 25 mW/cm 2 to about 38 mW/cm 2 , wherein the dental composition comprises a photo-curable composition, the light emitting diode is positioned a distance of about 7 mm±2 mm from the dental composition, and wherein a depth of cure of about 3 mm is achieved.
Claim 3
Independent Claim
87 words
A method for curing a dental composition suitable for repairing dental cavities or dental surfaces by applying the dental composition to an affected area and exposing the composition to radiation from a single light emitting diode, wherein the dental composition comprises a photo-curable composition and the light emitting diode is operated for about 60 seconds at a power output of about 20 mw/cm 2 at a distance of about 7 mm from the dental composition so that a depth of cure of about 3 mm is achieved.
Claim 4
Independent Claim
87 words
A method for curing a dental composition suitable for repairing dental cavities or dental surfaces by applying the dental composition to an affected area and exposing the composition to radiation from a single light emitting diode, wherein the dental composition comprises a photo-curable composition and the light emitting diode is operated for about 60 seconds at a power output of about 20 mw/cm 2 at a distance of about 7 mm from the dental composition so that a depth of cure of about 3 mm is achieved.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-11-19 | 2005-05-21 | 2005-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-11-19 | 2009-05-21 | 2009-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-11-19 | 2013-05-21 | 2013-11-20 | $7700.00 | Window Closed / Lapsed |