US20060275733A1 - Three-dimensional curing light - Google Patents

Three-dimensional curing light Download PDF

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Publication number
US20060275733A1
US20060275733A1 US11/445,498 US44549806A US2006275733A1 US 20060275733 A1 US20060275733 A1 US 20060275733A1 US 44549806 A US44549806 A US 44549806A US 2006275733 A1 US2006275733 A1 US 2006275733A1
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United States
Prior art keywords
recited
light
curing light
facets
heat sink
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/445,498
Inventor
Densen Cao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cao Group Inc
Original Assignee
Cao Group Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cao Group Inc filed Critical Cao Group Inc
Priority to US11/445,498 priority Critical patent/US20060275733A1/en
Assigned to CAO GROUP, INC. reassignment CAO GROUP, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CAO, DENSEN
Publication of US20060275733A1 publication Critical patent/US20060275733A1/en
Priority to US12/776,695 priority patent/US9295537B2/en
Priority to US15/078,119 priority patent/US20160228227A1/en
Priority to US16/784,753 priority patent/US20200170768A1/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/003—Apparatus for curing resins by radiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2101/00—Point-like light sources

Definitions

  • teeth have a 3-dimensional shape
  • prior art dental curing lights all emit light that can only be applied to one side of a tooth at a time. Exposing the entire tooth to light emitted by a curing light uses up valuable dentist chair time.
  • a 3-dimensional curing light is disclosed.
  • FIG. 1 depicts an example 3-dimensional curing light.
  • FIG. 2 depicts a cross-sectional view of an example 3-dimensional curing light.
  • FIG. 3 depicts another cross-sectional view of an example 3-dimensional curing light.
  • Three-dimensional curing lights are disclosed that can emit light for polymerizing monomers into polymers from 3 sides of a tooth at the same time. This approach can also be used to enhance the properties of the cured dental composite, and to achieve a deeper cure.
  • FIG. 1 depicts a perspective view of a 3-dimensional curing light.
  • a control box 101 controls operation of the light. It includes a display 102 , control buttons 103 , 104 , and 105 for controlling power, curing mode, and light emitting selections respectively.
  • An electrical cord 106 is attached to the control box 101 to provide electrical power from an AC outlet.
  • a cable 107 transfers electrical power from the control box to a 3-dimensional curing light head 108 .
  • the 3D curing light head has 3 facets, 109 , 110 , and 111 .
  • the 3 facets form a 3-dimensional channel. Inside the channel, the light is emitted from the inside of the facets.
  • the light beams 112 , 113 , and 114 from each facet combine to cover the 3-dimensional space occupied by a tooth. Thus any three dimensional object inside the channel can be cured at once.
  • the light emitted from the 3 facets can be controlled to be emitted together or individually depending on the need.
  • FIG. 2 depicts a cross-sectional view of a 3-dimensional curing light head using LEDs as a light source.
  • the light head there are 3 facets, 201 , 202 , and 203 .
  • Each facet has a similar structure and they are oriented at about 90 degrees to each other.
  • the facets form a channel therebetween into which an object to be cured is placed.
  • Each facet contains an LED light source 204 .
  • the LED light source can be a single LED, multiple LEDs, LED arrays, and combinations of different LEDs.
  • the wavelength of the LEDs can range from less than 280 nm to more than 5000 nm depending on application.
  • the power of the LEDs can range from less than 50 to more than 3000 mW/cm2.
  • the LED light source is attached to a heat sink 205 using a fixture 206 with screw 207 .
  • the cover 210 can be a simple protection cover, or and optical lens to shape or focus a light beam.
  • the LED light source can contain its own heat sink so that heat sink 205 serves as a secondary heat sink for greater heat dissipation. Instead of an LED light source, a semiconductor laser or any other desired light source could be used.
  • FIG. 3 depicts the curing of a tooth filling using a 3-dimensional curing light.
  • Alight head 301 is on top of a tooth structure 302 with a filling 303 in the tooth.
  • Three LEDs on 3 facets emit light beams 304 , 305 , and 306 from three sides. This allows the 3 light beams to reach the filling material from 3 directions to cure it into a durable dental restoration. Even though the light beams 305 and 306 need to penetrate the tooth structure to reach the filling material, the resulting dental restoration will be stronger and more durable than a restoration cured from one side only.

Abstract

A 3-dimensional curing light that can cure a light curable material, such as a dental restoration, from 3 directions at once.

Description

    CLAIM FOR PRIORITY
  • This patent application claims benefit of and priority to U.S. Provisional Patent Application Ser. No. 60/686,261 filed on Jun. 1, 2005.
    • BACKGROUND
  • Although teeth have a 3-dimensional shape, prior art dental curing lights all emit light that can only be applied to one side of a tooth at a time. Exposing the entire tooth to light emitted by a curing light uses up valuable dentist chair time.
    • SUMMARY
  • A 3-dimensional curing light is disclosed.
    • BRIEF DESCRIPTION OF DRAWINGS
  • FIG. 1 depicts an example 3-dimensional curing light.
  • FIG. 2 depicts a cross-sectional view of an example 3-dimensional curing light.
  • FIG. 3 depicts another cross-sectional view of an example 3-dimensional curing light.
    • DETAILED DESCRIPTION
  • Three-dimensional curing lights are disclosed that can emit light for polymerizing monomers into polymers from 3 sides of a tooth at the same time. This approach can also be used to enhance the properties of the cured dental composite, and to achieve a deeper cure.
  • FIG. 1 depicts a perspective view of a 3-dimensional curing light. A control box 101 controls operation of the light. It includes a display 102, control buttons 103, 104, and 105 for controlling power, curing mode, and light emitting selections respectively. An electrical cord 106 is attached to the control box 101 to provide electrical power from an AC outlet. A cable 107 transfers electrical power from the control box to a 3-dimensional curing light head 108. The 3D curing light head has 3 facets, 109, 110, and 111. The 3 facets form a 3-dimensional channel. Inside the channel, the light is emitted from the inside of the facets. The light beams 112, 113, and 114 from each facet combine to cover the 3-dimensional space occupied by a tooth. Thus any three dimensional object inside the channel can be cured at once. The light emitted from the 3 facets can be controlled to be emitted together or individually depending on the need.
  • FIG. 2 depicts a cross-sectional view of a 3-dimensional curing light head using LEDs as a light source. In the light head, there are 3 facets, 201, 202, and 203. Each facet has a similar structure and they are oriented at about 90 degrees to each other. The facets form a channel therebetween into which an object to be cured is placed. Each facet contains an LED light source 204. The LED light source can be a single LED, multiple LEDs, LED arrays, and combinations of different LEDs. The wavelength of the LEDs can range from less than 280 nm to more than 5000 nm depending on application. The power of the LEDs can range from less than 50 to more than 3000 mW/cm2. The LED light source is attached to a heat sink 205 using a fixture 206 with screw 207. There is heat conduction paste 208 located between LED 204 and heat sink 205 to facilitate heat transfer. There is a heat insulation layer 209 within the head housing to create an air gap between the heat sink and the outside casing so that the heat will not conducted to the outside casing. On the light-emitting side of the LEDs, there is a protection cover 210 to cover the LEDs and protect them from damage and contaminants. The cover 210 can be a simple protection cover, or and optical lens to shape or focus a light beam. The LED light source can contain its own heat sink so that heat sink 205 serves as a secondary heat sink for greater heat dissipation. Instead of an LED light source, a semiconductor laser or any other desired light source could be used.
  • FIG. 3 depicts the curing of a tooth filling using a 3-dimensional curing light. Alight head 301 is on top of a tooth structure 302 with a filling 303 in the tooth. Three LEDs on 3 facets emit light beams 304, 305, and 306 from three sides. This allows the 3 light beams to reach the filling material from 3 directions to cure it into a durable dental restoration. Even though the light beams 305 and 306 need to penetrate the tooth structure to reach the filling material, the resulting dental restoration will be stronger and more durable than a restoration cured from one side only.
  • While the present invention has been described and illustrated in conjunction with a number of specific embodiments, those skilled in the art will appreciate that variations and modifications may be made without departing from the principles of the invention as herein illustrated, described, and claimed. The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects as only illustrative, and not restrictive. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (11)

1. A 3-dimensional curing light comprising:
a casing formed to have 3 facets,
said facets arranged so that adjoining facets are generally at a 90 degrees with respect to each other,
said facets being arranged to form a channel therebetween,
a source of curing light located at each facet,
said curing light sources emitting light toward said channel so that a material to be cured which is placed in said channel receives curing light from 3 directions simultaneously.
2. A device as recited in claim 1 wherein at least one of said curing light sources is an LED.
3. A device as recited in claim 1 wherein at least one of said curing light sources is a laser.
4. A device as recited in claim 1 wherein each of said light sources includes a primary heat sink.
5. A device as recited in claim 4 further comprising a secondary heat sink in heat communication with said primary heat sink.
6. A device as recited in claim 1 wherein a quantity of heat paste is located between at least one of said light sources and a heat sink.
7. A device as recited in claim 1 wherein said light source is selected from the group consisting of single LED chips, multiple LED chips, and LED arrays.
8. A device as recited in claim 1 wherein said light sources generate light with a wavelength in the range of 280 to 5000 nm.
9. A device as recited in claim 1 wherein said light sources generate power in the range of 50 mW/cm2 to 3000 mW/cm2.
10. A device as recited in claim 1 further comprising a secondary heat sink insulated from said casing to avoid heating up said casing during use.
11. A 3-dimensional curing light comprising:
3 facets forming a channel therebetween,
each of said facets having a source of curing light which emits curing light generally toward said channel so that a material to be cured which is placed in said channel receives curing light from 3 directions simultaneously.
US11/445,498 2005-06-01 2006-06-01 Three-dimensional curing light Abandoned US20060275733A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US11/445,498 US20060275733A1 (en) 2005-06-01 2006-06-01 Three-dimensional curing light
US12/776,695 US9295537B2 (en) 2005-06-01 2010-05-10 Three dimensional curing light
US15/078,119 US20160228227A1 (en) 2005-06-01 2016-03-23 Three-dimensional curing light
US16/784,753 US20200170768A1 (en) 2005-06-01 2020-02-07 Three-dimensional curing light

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68626105P 2005-06-01 2005-06-01
US11/445,498 US20060275733A1 (en) 2005-06-01 2006-06-01 Three-dimensional curing light

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US12/776,695 Continuation US9295537B2 (en) 2005-06-01 2010-05-10 Three dimensional curing light

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US12/776,695 Active US9295537B2 (en) 2005-06-01 2010-05-10 Three dimensional curing light
US15/078,119 Abandoned US20160228227A1 (en) 2005-06-01 2016-03-23 Three-dimensional curing light

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US8393897B2 (en) 2007-11-07 2013-03-12 David J. Clark Methods and devices for diastema closure
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USD810293S1 (en) 2017-01-20 2018-02-13 Garrison Dental Solutions, Llc Dental instrument
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US9987110B2 (en) 2009-04-02 2018-06-05 Kerr Corporation Dental light device
US9730778B2 (en) 2009-04-02 2017-08-15 Kerr Corporation Curing light device
US9072572B2 (en) 2009-04-02 2015-07-07 Kerr Corporation Dental light device
US9693846B2 (en) 2009-04-02 2017-07-04 Kerr Corporation Dental light device
US9066777B2 (en) 2009-04-02 2015-06-30 Kerr Corporation Curing light device
US9358080B2 (en) 2012-03-26 2016-06-07 David J. Clark Dental separator ring
US10159548B2 (en) 2014-09-17 2018-12-25 Garrison Dental Solutions, L.L.C. Dental curing light
US11116616B2 (en) 2014-09-17 2021-09-14 Garrison Dental Solutions, L.L.C. Dental curing light
USD810293S1 (en) 2017-01-20 2018-02-13 Garrison Dental Solutions, Llc Dental instrument
WO2021021958A1 (en) * 2019-07-29 2021-02-04 Cao Group, Inc Curing light
USD1025364S1 (en) 2022-05-16 2024-04-30 Ultradent Products, Inc. Dental curing light

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US20100216089A1 (en) 2010-08-26
US20160228227A1 (en) 2016-08-11
US9295537B2 (en) 2016-03-29

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