JP2004329441A - Dental photopolymerization illuminator, and method for dental photopolymerization - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new dental photopolymerization illuminator which can be used for dental material including various kinds of photopolymerization initiator, and a method for dental photopolymerization. <P>SOLUTION: Mutually different wavelength light emitted from a plurality of light source parts including a plurality of light-emitting diodes of radiation wavelength different from each other is propagated in a light guide part and multiplexed next. Thereafter, prescribed dental material is irradiated with the light. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a dental photopolymerization irradiator used for dental treatment and a dental polymerization method.
[0002]
[Prior art]
Conventionally, dental materials such as a dental photocurable resin and a dental adhesive used for dental treatment have a wavelength of 440 to 490 nm as disclosed in, for example, Japanese Patent Application Laid-Open No. 60-26002. What added the photoinitiator which consists of camphorquinone which absorbs and activates light is generally used.
[0003]
On the other hand, dental materials such as a dental photocurable resin and a dental adhesive containing a novel photopolymerization initiator have also been developed, and as the photopolymerization initiator, JP-A-2000-53519 and JP-A-2000-53569 have been developed. No. 26226 discloses acylphosphine oxides, and US Pat. No. 6,204,302 discloses propandiones of diketones. It is known that none of these compounds can be activated unless the wavelength is 420 nm or less.
[0004]
Further, the above-mentioned novel photopolymerization initiator is not only added alone to a dental photocurable resin or a dental adhesive, but may be used by being mixed with the above-mentioned camphorquinone. For example, JP-A-2000-212015 shows that a dental adhesive containing two types of photopolymerization initiators is superior in physical properties to a dental adhesive using a photopolymerization initiator alone. Have been.
[0005]
[Problems to be solved by the invention]
As described above, since any photopolymerization initiator is not activated unless light in the blue wavelength region or less is used, a dental photopolymerization irradiator having a halogen lamp as a light source has been conventionally used. However, although the halogen lamp has a wide range of irradiation wavelengths, it has various problems such as heat generation, stability of light irradiation energy, and breaking of a bulb.
[0006]
From such a viewpoint, a dental photopolymerization irradiator using a light emitting diode (LED) as a light source instead of the above-described halogen lamp has been developed. However, since the emission wavelength of the LED is fixed in an extremely narrow range, there is a problem that dental materials containing various photopolymerization initiators cannot be widely dealt with.
[0007]
For example, a dental photopolymerization irradiator designed for a dental material containing a photopolymerization initiator composed of camphorquinone should be used for a dental material containing a novel photopolymerization initiator such as an acylphosphine oxide compound. Could not. Further, it cannot be used for dental materials containing camphorquinone and acylphosphine oxide compounds.
[0008]
An object of the present invention is to provide a novel dental photopolymerization irradiator and a dental photopolymerization method that can be used for dental materials containing various photopolymerization initiators.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides:
A plurality of light source units each including a plurality of light emitting diodes, and a light guide unit for multiplexing wavelength light emitted from the plurality of light source units, a dental photopolymerization irradiator, About.
[0010]
Also, the present invention
Preparing a plurality of light source sections each including a plurality of light emitting diodes,
The wavelength light emitted from the plurality of light source units, combined by passing through the light guide unit, and light curing by irradiating a dental material containing a predetermined photopolymerization initiator,
The present invention relates to a dental photopolymerization method, comprising:
[0011]
According to the present invention, a plurality of light source units are provided in advance inside the irradiator, and a plurality of LEDs having a predetermined emission wavelength are arranged in each light source unit. Therefore, by setting in advance the emission wavelengths of the LEDs arranged in each light source unit differently, that is, by arranging a plurality of LEDs having different emission wavelengths in each light source unit, the light emitted from each LED is emitted. Since the wavelength lights are multiplexed by the light guide section, the wavelength light in a wide wavelength range can be extracted from a single irradiator. Therefore, it can be used for dental materials containing various photopolymerization initiators.
[0012]
Further, according to the present invention, since the light source unit of the irradiator is constituted by an LED instead of the conventional halogen lamp, in addition to various problems such as heat generation, stability of light irradiation energy, out of bulb, etc., Electric power can be suppressed, and it meets the recent demand for energy saving.
[0013]
Note that, in the present invention, the plurality of light source units need not necessarily be constituted by LEDs having different radiation wavelengths, but may be constituted by LEDs having the same radiation wavelength. In this case, the intensity of the wavelength light emitted from the irradiator can be increased, and the photocuring of the dental material can be performed in a short time.
[0014]
In a preferred aspect of the present invention, it is preferable that the light source unit is configured in a cartridge shape, for example, and is configured to be detachable. In this case, a plurality of light source sections composed of LEDs having different emission wavelengths are prepared in advance, and the cartridge-shaped light source section has an LED with an optimum emission wavelength as appropriate according to the type of dental material to be irradiated. By simply replacing one, a single irradiator can handle a wide variety of dental materials.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail based on embodiments of the invention.
FIG. 1 is a configuration diagram showing an example of a dental photopolymerization irradiator of the present invention, FIG. 2 is a side view of the dental photopolymerization irradiator shown in FIG. 1, and FIG. FIG. 3 is an enlarged view showing a light source section of the dental photopolymerization irradiation device shown in FIG.
[0016]
The dental photopolymerization irradiator 10 shown in FIGS. 1 and 2 has a first light source unit 11 and a second light source unit 12. In the first light source section 11, a plurality of first LEDs 111 having a predetermined radiation wavelength are arranged, and these are supported and fixed to the mounting plate 112 by solder or the like. In the second light source unit 12, a plurality of second LEDs 121 having a different emission wavelength from the first LED 111 are arranged, and these are supported and fixed to the mounting plate 122 by solder or the like.
[0017]
As is apparent from FIG. 3, the first LED 111 is composed of a total of seven LEDs, and six LEDs are circumferentially arranged so as to surround the central LED. The second LED 121 also includes a total of seven LEDs, and six LEDs are circumferentially arranged so as to surround the central LED.
[0018]
However, the numbers of the first LED 111 and the second LED 121 can be appropriately set according to the intensity of the wavelength light to be obtained from these LEDs, the size of the LED actually used, and the like. However, when the number increases, the size of the light source unit, that is, the irradiator itself increases, and it becomes difficult to apply the dental unit. Therefore, specifically, the number is set to several to several tens.
[0019]
Behind the first light source unit 11 and the second light source unit 12, circuit units 13 and 14 for driving these light source units are provided, respectively. Further, a battery 16 such as a lithium ion battery is provided behind the circuit units 13 and 14 to supply power thereto. The distal ends of the first light source unit 11 and the second light source unit 12 are connected to a Y-shaped light guide unit 15.
[0020]
The light guide unit 15 can be configured by bundling a plurality of glass fibers, transparent resin fibers, and the like. Further, the diameter of the incident end of the light guide section 15 can be set to about 15 mm, and the diameter of the output end can be set to about 8 mm.
[0021]
The first light source unit 11, the second light source unit 12, and the circuit units 13 and 14 are housed in a case 19. On the upper and lower sides of the case 19, switches 17 and 18 which are turned on by pressing are provided. Since the irradiator 10 is actually used in the oral cavity, by providing a switch in the up and down direction of the case 19, the switch can be easily operated regardless of how the operator holds the irradiator 10. Can be pressed.
[0022]
In the irradiator 10 shown in FIGS. 1 and 2, when the switch 17 or 18 is turned on by being pressed, the first LED 111 and the second LED 111 in the first light source unit 11 via the circuit units 13 and 14. A predetermined power is supplied from the battery 16 to the second LED 121 of the light source unit 12. As a result, the first LED 111 and the second LED 121 are excited, and emit light of a specific wavelength. These wavelength lights propagate in the light guide section 15 and then combine.
[0023]
Accordingly, the irradiator 10 emits light having a total wavelength range of the emission wavelength of the first LED 111 and the emission wavelength of the second LED 121. As a result, if the first LED 111 and the second LED 121 are appropriately selected, various photopolymerization initiators contained in the dental material can be dealt with only by the single irradiator 10.
[0024]
For example, if the first LED 111 is composed of a blue light emitting diode (radiation wavelength: 470 ± 10 nm) and the second LED 121 is composed of a violet light emitting diode (radiation wavelength: 405 nm ± 10 nm), camphorquinone (activation wavelength) : 440 to 490 nm) and a dental photocurable resin or a dental adhesive containing a photopolymerization initiator such as an acylphosphine oxide compound (activation wavelength: 420 nm or less). become.
[0025]
In the irradiator 10 shown in FIGS. 1 and 2, the first light source unit 11 and the second light source unit 12 do not necessarily need to be composed of LEDs having different radiation wavelengths, but are composed of LEDs having the same radiation wavelength. You can also. In this case, the intensity of the wavelength light emitted from the irradiator 10 can be increased, and light curing of the dental material can be performed in a short time.
[0026]
FIG. 4 is a configuration diagram showing a modification of the dental photopolymerization irradiator shown in FIGS. 1 and 2. In FIG. 4, components similar to those of the irradiator shown in FIGS. 1 and 2 are denoted by the same reference numerals.
[0027]
In the irradiator 20 shown in FIG. 4, the first light source unit 21 and the second light source unit 22 are configured in a cartridge shape and are detachable. Therefore, a plurality of cartridge-like light source units each composed of LEDs having different emission wavelengths are prepared in advance, and two optimal light source units are selected from the plurality of light source units according to the type of dental material to be irradiated. However, if incorporated into the case 19, a single irradiator can handle a wide variety of dental materials.
[0028]
In FIG. 4, both the first light source unit 21 and the second light source unit 22 are set to be detachable, but it is also possible to fix one of them and make the other detachable.
[0029]
The other components of the irradiator 20 shown in FIG. 4 are the same as those of the irradiator 10 shown in FIGS.
[0030]
As described above, the present invention has been described in detail based on the embodiments of the present invention with specific examples. However, the present invention is not limited to the above description, and any modifications or changes may be made without departing from the scope of the present invention. Changes are possible. For example, in the above-described specific example, the light source unit is configured by the first light source unit and the second light source unit, but may be configured by three or more light source units. Further, instead of the blue light emitting diode and the purple light emitting diode, a light emitting diode having an arbitrary emission wavelength can be used.
[0031]
【The invention's effect】
As described above, according to the present invention, a novel dental photopolymerization irradiator and a dental photopolymerization method including an LED as a light source, which can be used for a dental material containing various photopolymerization initiators, are provided. Can be provided.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an example of a dental photopolymerization irradiator of the present invention.
FIG. 2 is a side view of the dental photopolymerization irradiator shown in FIG.
FIG. 3 is an enlarged view showing a light source unit of the dental photopolymerization irradiator shown in FIGS. 1 and 2;
FIG. 4 is a view showing a modified example of the dental photopolymerization irradiator shown in FIGS. 1 and 2;
[Explanation of symbols]
10, 20 Dental photopolymerization irradiator 11 First light source unit 12 Second light source unit 13, 14 Circuit unit 15 Y-shaped light guide unit 16 Battery 17, 18 Switch 19 Case 21 Cartridge-shaped first light source unit 22 cartridge-shaped second light source unit 111 first light-emitting diode (LED)
121 second light emitting diode (LED)
112, 122 Mounting plate

Claims (16)

A plurality of light source units each including a plurality of light emitting diodes, and a light guide unit for multiplexing wavelength light emitted from the plurality of light source units, a dental photopolymerization irradiator, . The dental photopolymerization irradiator according to claim 1, wherein the plurality of light sources include a plurality of light emitting diodes having different emission wavelengths. The plurality of light sources include a first light source having a plurality of first light emitting diodes having a first radiation wavelength and a second light source having a plurality of second light emitting diodes having a second radiation wavelength. The dental photopolymerization irradiator according to claim 2, comprising: The first light source unit and the second light source unit are arranged in parallel, and the light guide unit is connected to the first light source unit and the second light source unit, and has a Y-shape. The dental photopolymerization irradiator according to claim 3, characterized in that: 5. The dental photopolymerization irradiator according to claim 3, wherein the first light source unit includes a blue light emitting diode, and the second light source unit includes a violet light emitting diode. 6. The dental photopolymerization irradiation device according to any one of claims 1 to 5, wherein at least one of the plurality of light source units is detachably attached. The dental photopolymerization irradiator according to claim 6, wherein the light source unit detachably attached is configured in a cartridge shape. The dental photopolymerization irradiation device according to any one of claims 1 to 7, further comprising at least a pair of switches, wherein the switches are provided in a vertical direction of the plurality of light source units. Preparing a plurality of light source sections each including a plurality of light emitting diodes,
The wavelength light emitted from the plurality of light source units, combined by passing through the light guide unit, and light curing by irradiating a dental material containing a predetermined photopolymerization initiator,
A dental photopolymerization method, comprising: The method according to claim 9, wherein the plurality of light sources include a plurality of light emitting diodes having different emission wavelengths. The plurality of light sources include a first light source having a plurality of first light emitting diodes having a first radiation wavelength and a second light source having a plurality of second light emitting diodes having a second radiation wavelength. The dental photopolymerization method according to claim 10, comprising: The first light source unit and the second light source unit are arranged in parallel, and the light guide unit is connected to the first light source unit and the second light source unit, and has a Y-shape. The dental photopolymerization method according to claim 11, characterized in that: The method of claim 11 or 12, wherein the first light source unit includes a blue light emitting diode, and the second light source unit includes a violet light emitting diode. The dental photopolymerization method according to any one of claims 10 to 13, wherein at least one of the plurality of light source units is detachably attached. The dental photopolymerization method according to claim 14, wherein the light source unit detachably attached is configured in a cartridge shape. The dental photopolymerization method according to any one of claims 9 to 15, wherein the dental material is a dental photocurable resin or a dental adhesive.

Images