JP4403315B2 - Technical photopolymerizer - Google Patents

Description

BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a technical photopolymerizer used for curing a photopolymerization resin used in the field of dentistry when a photopolymerization dental prosthesis is built or for subsequent curing.
[0002]
[Prior art]
In general, a dental prosthesis is produced using a paste material made of a photopolymerization resin. A dental prosthesis is produced by using a plurality of paste materials in order to reproduce the color tone of an adjacent natural tooth, building up them in layers, and sequentially polymerizing and curing them by light irradiation.
[0003]
This dental prosthesis has a complicated three-dimensional shape. If polymerization and curing are incomplete, peeling from the lower layer and insufficient mechanical strength occur, so light irradiation from the entire circumference is sufficient and complete. Must be polymerized and cured.
[0004]
A halogen lamp, a metal halide lamp, a xenon lamp, or the like is used as a light source of the photopolymerizer for technical use.
[0005]
With these light sources, the dental prosthesis was hardened by using one or as many as 4-5 lamps.
However, the amount of light on the front side of the lamp is strong, and the amount of light on the back side of the irradiated surface and between the lamps is weak. Therefore, there is a high risk of unpolymerized portions and spots on the dental prosthesis. In addition, the lamp is often irradiated from above, and the dental neck portion of the dental prosthesis often causes poor curing.
[0006]
In order to avoid these dangers, Japanese Patent Application Laid-Open No. 60-222050 implements a method of curing a polymer while rotating a mounting table on which a prosthesis is mounted. This method contributes to eliminating many plaques by placing a dental prosthesis on a rotating body, and alleviates the plaques.
[0007]
However, since the paste material before polymerization is very soft, the dental prosthesis made of the built-up paste material is often deformed by the vibration of the rotating mounting table.
Furthermore, in the case of this method, since irradiation to the dental prosthesis is performed intermittently, it is necessary to set the irradiation setting time longer than in the case of continuous irradiation, which is not efficient.
In addition, it is necessary to add a rotating device, the structure is complicated, the number of parts is increased, and this causes malfunction and failure, and increases in the number of assembly steps.
[0008]
The existing lamp emits a lot of heat rays and visible rays in a wavelength range unnecessary for polymerization of the dental prosthesis, and there is a risk that the dental prosthesis is overheated and deformed.
For this reason, an IR reflection filter or a visible light band filter is often installed. However, the installation of the filter not only increased the number of parts, but also had to be replaced because of deterioration and dirt due to aging.
[0009]
Furthermore, existing lamps often suffer from lamp deterioration and ball breakage due to heat.
As a precaution, a cooling fan may be installed. However, there are many cases where dust, gypsum powder, etc. are scattered at general laboratories, and when taking in the outside air during cooling fan operation, these dusts are sucked in at the same time and attached to the dental prosthesis. In some cases, the prosthesis becomes dirty.
[0010]
In addition, the cooling fan causes the engineer's working environment to deteriorate because the dust is re-suspended.
[0011]
In addition, although existing lamps have a length of time depending on the type, the lamps are always turned off or the amount of light is reduced when used for a certain period of time, and the user has to replace expensive lamps.
[0012]
Furthermore, the technical photopolymerizer using the existing lamp has a problem that the power consumption of the lamp is large, so that a power cord for supplying power must be connected from an external power source, and the installation place is limited.
Further, when the power battery is built-in and cordless, the power battery becomes very expensive and large, and the entire device becomes heavy and large, resulting in a problem that convenience is lost.
[0013]
Moreover, there exist inventions, such as patent publication 2997522 and Unexamined-Japanese-Patent No. 2000-316881, as a photopolymerization apparatus which used the light emitting diode as the light source.
However, since these devices irradiate a narrow range of around φ10 for intraoral use, they are focused on concentrating a plurality of light emitting diodes on the light guide, and have a wide range of φ60-80 required for technical use. The method of irradiating was not omitted at all.
[0014]
Furthermore, even if these technologies are used in a photopolymerizer for engineering, there is a problem that the irradiation range is narrow and irradiation must be repeated for each part, and there is a problem such as forgetting irradiation and a lot of time. Was not satisfactory.
[0015]
[Problems to be solved by the invention]
Therefore, the object of the present invention is to provide a technical photopolymerizer that eliminates the above-mentioned problems of conventional photopolymerizers, and that can produce a dental prosthesis that is compact, efficient, more accurate, and free from defects. The purpose is to do.
Conventional photopolymerizers have a risk of causing unpolymerized portions or spots of a dental prosthesis or deformation due to overheating or vibration.
[0016]
Moreover, since irradiation with respect to a dental prosthesis is performed intermittently, it is necessary to set a long irradiation setting time, which is not efficient.
In addition, the structure such as the addition of an IR reflection filter and a bandpass filter and the rotating mechanism of the installation body is complicated, has a large number of parts, has a risk of malfunction and failure, and has a large number of assembly steps.
[0017]
On the other hand, there was a risk of dust entrainment due to the use of a cooling fan and the risk of re-floating the dust.
Furthermore, since the conventional lamp has a short life, it has been necessary to replace expensive lamps.
Further, the conventional photopolymerizer has a problem in that the installation place is limited or a cordless power source requires an expensive and large power battery.
[0018]
[Means for Solving the Problems]
The present invention is a technical photopolymerizer having a curing range in which a dental prosthesis is cured by an irradiation light source, wherein a plurality of light emitting diodes are used.
[0019]
By selecting a light emitting diode having an emission wavelength suitable for curing the photopolymerizable resin material, it is possible to reduce the power supply without installing an IR reflection filter or a bandpass filter.
[0020]
Furthermore, in the present invention, a plurality of light emitting diodes are arranged so as to irradiate toward a part of the curing range.
In this configuration, it is possible to realize suitable irradiation by arranging a plurality of light emitting diodes in a dome shape.
[0021]
In the above configuration, a flat light source in which a plurality of light emitting diodes are arranged on a flat plate may be provided, and a plurality of flat light sources may be arranged in a polyhedron.
[0022]
Further, in the above configuration, in a housing provided with an open / close door on the front as means for placing or taking out the dental prosthesis on the mounting table, the light emission as a part of the dome-like arrangement in the open / close door portion. A suitable irradiation can be realized by arranging a diode or a flat light source.
[0023]
Furthermore, with the above configuration, it is possible to obtain a compact technical photopolymerizer with few failures without installing a device for rotating the mounting table or a cooling fan.
[0024]
Furthermore, a control unit for operating a light emitting diode and a power supply battery can be built in the housing to be a cordless type. Thereby, the photopolymerizer for engineering with good convenience with few restrictions of an installation place can be obtained.
[0025]
The number of light emitting diodes of the present invention is preferably 60 to 400, more preferably 150 to 250.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below. FIG. 1 is a perspective view of a technical photopolymerizer according to the present invention, FIG. 2 is a cross-sectional view, 1 is a case, and includes an upper case 3 and a lower case 4 that can be opened and closed by a hinge 2.
[0027]
The lower housing 4 includes a power switch 5, a start switch 6, a timer 7, and the like, and includes a control unit 8 and a power battery 9.
A mounting table 10 is installed on the upper surface of the lower housing 4. The mounting table 10 may be irregularities or lines indicating a mounting range on the upper surface of the lower housing 4.
[0028]
Inside the upper housing 3, a light emitting diode 11 is arranged in a dome shape to form a light irradiation chamber 12, and is configured to irradiate the curing range 13. In particular, in this embodiment, as a suitable configuration capable of dealing with almost all dental prostheses, 200 light emitting diodes having an emission wavelength peak of 470 nm and an optical output of 4 mW are used and arranged in a hemisphere having a radius of 60 mm. Although the size of the mounting table 10 is set to a radius of 40 mm, the size and the number of light emitting diodes may be changed depending on the target dental prosthesis.
[0029]
FIG. 3 shows an application example of the light irradiation chamber according to the light emitting diode arrangement of the present invention, which may be a) a columnar arrangement, b) a truncated cone arrangement, c) a polyhedral arrangement.
[0030]
4 and 5 show an embodiment excellent in productivity particularly suitable in FIG. 3c). 4 shows a flat light source 14 in which a plurality of light emitting diodes 11 are installed on a flat plate 15, and FIG. 5 shows a flat plate 15 in which the flat light source 14 is arranged on each surface, which is a printed circuit board. Since these are performed at the same time, not only is individual wiring unnecessary, but automatic mounting is possible and productivity is very good.
[0031]
In the present embodiment, 25 light emitting diodes 11 having an emission wavelength peak of 470 nm and a light output of 4 mW are installed on one flat plate (50 mm × 50 mm), and seven flat light sources 14 are provided in the upper housing 3. Arranged.
In addition, you may use the LED collective lamp which selected the light emission wavelength of the light emitting diode as 430-480 nm instead of a flat light source.
[0032]
FIG. 6 is a perspective view of a technical tabletop photopolymerizer provided with an opening / closing door 16 on the front surface of the housing 1. The housing 1 is provided with an internal partition wall 17 inside and an opening / closing door 16 at the front. The light emitting diode 11 is disposed on the inner partition wall 17 and on the inner surface of the opening / closing door 16 so that the opening / closing door 16 becomes the dome-shaped light irradiation chamber 12 shown in FIGS.
The arrangement of the light emitting diodes 11 may be the arrangement shown in FIGS.
【The invention's effect】
[0033]
By using a light emitting diode as the light source, the technical photopolymerizer of the present invention eliminates the risk of overheating the dental prosthesis without the need to install an IR reflection filter or a visible light bandpass filter. .
[0034]
In addition, by arranging a plurality of light emitting diodes, it is possible to perform polymerization without setting up a long irradiation time without using a mechanism for rotating the mounting table, reducing the number of parts, and assembling. Man-hours can be reduced. And since it does not rotate, the danger of a deformation | transformation of the dental prosthesis by a failure or a vibration can be excluded.
[0035]
Furthermore, there is no fear of running out of the ball without installing a cooling fan, eliminating the risk of exposing the dental prosthesis to dust and eliminating the need to replace expensive lamps.
[0036]
On the other hand, the cordless type with a built-in power supply battery can be easily obtained, and the handling is easy without being limited to the installation location.
Due to the above effects, it is possible to provide a technical photopolymerizer capable of producing a dental prosthesis that is compact, efficient, accurate, and free from defects.
[0037]
[Brief description of the drawings]
FIG. 1 is a perspective view of a technical photopolymerizer according to the present invention. FIG. 2 is a cross-sectional view of a technical photopolymerizer according to the present invention. FIG. 3 is an application layout of a light irradiation chamber according to a light emitting diode arrangement of the present invention. 4] Schematic diagram of a flat light source in which a plurality of light emitting diodes are installed on a flat plate. [FIG. 5] A schematic view of the flat light source 14 arranged in a light irradiation chamber. [FIG. ]
DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Hinge 3 Upper housing | casing 4 Lower housing | casing 5 Power switch 6 Start switch 7 Timer 8 Control part 9 Power supply battery 10 Mounting base 11 Light emitting diode 12 Light irradiation chamber 13 Curing range 14 Flat light source 15 Flat plate 16 Opening / closing door 17 Inside Bulkhead

Claims (3)

In a technical photopolymerizer having a curing range in which a dental prosthesis is cured by an irradiation light source,
Having a light irradiation chamber in which a plurality of light emitting diodes are arranged in a housing;
In the light irradiation chamber has a mounting table fixed to a housing having a mounting range on the upper surface,
A technical photopolymerizer characterized in that the light emitting diode arranged at the lowermost position is located below the mounting range . In a technical photopolymerizer having a curing range in which a dental prosthesis is cured by an irradiation light source,
Having a light irradiation chamber in which a plurality of light emitting diodes are arranged in a housing;
In the light irradiation chamber has a mounting table fixed to a housing having a mounting range on the upper surface,
2. The photopolymerizer for technical use according to claim 1, wherein the light emitting diodes arranged in the light irradiation chamber are arranged symmetrically from the center of the placement range . 2. The industrial photopolymerizer according to claim 1 , wherein the upper surface of the mounting table has irregularities and lines indicating a mounting range .
[0001]

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