JPH0313300Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention is a light irradiation device for photocurable dental compositions that is used to photopolymerize photocurable dental compositions in dental materials such as denture bases. Regarding.

<Prior art> Currently, a high-intensity lamp such as a halogen lamp is used to polymerize and harden photocurable dental compositions, which are photopolymerizable resins, but this has the advantage of short polymerization time. However, the drawback was that high heating made the surface finish of the denture base rough and deformed.

In addition to the halogen lamp, a xenon lamp or a mercury lamp is used as the above-mentioned lamp with a large amount of light.

Therefore, a light irradiation device using a circle-shaped fluorescent lamp with a low light intensity as a light source has been proposed, but this makes it possible to polymerize and harden photocurable dental compositions without deforming the denture base etc. However, since the amount of light per hour is small, the problem remains that the polymerization and curing process takes 5 to 8 minutes, and the total time to complete the denture base etc. is considerably prolonged.

<Problems to be solved by the invention> This invention was made by focusing on the above-mentioned conventional problems. By using a high-intensity lamp such as a halogen lamp, and by using a circle-shaped fluorescent lamp with a low light intensity for the main polymerization after repairing the denture base, etc., the light-curable dental composition can be temporarily polymerized in a short time and the denture can be cured. The object of the present invention is to provide a light irradiation device for a photocurable dental composition, which can effectively perform main polymerization to improve the quality of the denture base, etc., and can speed up the correction and completion of the denture base, etc. as a whole.

<Means for solving the problems> The present invention was made in view of the above-mentioned purpose, and the gist thereof is to irradiate light onto dental materials such as denture bases containing photocurable dental compositions to polymerize them. A curing light irradiation device includes a circle-shaped fluorescent lamp for main polymerizing the photocurable dental composition by irradiating the light, and a high light intensity lamp for temporarily polymerizing the photocurable dental composition, and these fluorescent lamps and high light intensity. A photocurable dental material, comprising: a guide support member that guides and supports the dental material at positions facing each lamp; and a switch that selects lighting of either the fluorescent lamp or the high-intensity lamp. The composition is in a light irradiation device.

Here, the guide support member can adjust the position of the dental material according to the amount of light and heat of the fluorescent lamp by means of a table on which the dental material is placed and a support rod that supports the table in a vertically movable manner. This table moves dental materials up and down in response to the opening and closing operations of the lid in a case equipped with fluorescent lamps and high-intensity lamps. The distance can be adjusted as desired.

<Function> The light irradiation device of this invention has to be switched in such a case because the work of partially curing the photocurable dental composition is repeated many times for each work of molding or modifying dental materials. By operating a switch, a high-intensity lamp is turned on to perform temporary polymerization with a sufficient amount of light in a short period of time, allowing the temporary bonding work to be carried out quickly. This allows the main polymerization to be carried out completely.

<Embodiment of the invention> FIG. 1 is a longitudinal sectional side view showing an embodiment of the light irradiation device according to the invention, and FIG. 2 is a front view of the same. In the same figure, 1 is an air hole 1b in the bottom 1a.
2 is an opening of this case 1, 3 is a lid that opens and closes this opening 2, 4 is a hinge that attaches this lid 3 so that it can be opened and closed freely, 5 is an outside of the lid 3. A handle attached to the side, 6 a guide rod erected diagonally on the bottom 1a of the case 1,
7 is a vertically sliding member along this guide rod 6, 8 is a connecting rod whose both ends are hinged to the sliding member 7 and the inner surface of the lid 3, and 9 is a denture 10 horizontally supported on the sliding member 7, etc. It is a stand.

Further, 11 is a circle-shaped fluorescent lamp with a visible light wavelength of 400 to 500 nm placed in the upper part of the case 1, 12 is a halogen lamp as a high-intensity lamp placed above this fluorescent lamp 11, and 13 is a fluorescent lamp. Reflecting the light rays of the light 11 and halogen lamp 12,
A reflection plate 14 for the light condensed near the denture 10 is a cooling fan for the halogen lamp 12. In addition,
These fluorescent lamps 11, halogen lamps 12, and cooling fans 14 are arranged coaxially.

On the other hand, on the outer surface of the front side of the case 1, there is a main switch 15 for turning on the power, a pilot lamp 16 for displaying the turning on of the power, a timer 17 for setting the lighting time, and a halogen lamp 12 or a fluorescent lamp 1.
A changeover switch 18 is provided for turning on either one of the lights.

Next, the operation will be explained.

Now, a denture base 1 made of a photocurable dental composition
To process the 0, we check the fit and make partial corrections and processes while molding. For this reason, photopolymerization of the photocurable dental composition may be performed each time the photocurable dental composition is modified, and in such cases,
Switch the changeover switch 18 to the halogen lamp lighting side. Therefore, after turning on the main switch 15,
If the changeover switch 18 is switched as described above and the timer 17 is used to set the irradiation time for which the light should be turned on, the light will be turned on for the set time.
The photocurable dental composition can be irradiated with light from the halogen lamp 12. This halogen lamp 1
For example, 2 uses one 300W unit, but since the amount of irradiation light is large, the irradiation time is, for example,
The irradiation time is kept at about 10 to 25 seconds to prevent the denture base 10 from being deformed due to heat generated by long-term irradiation. In this way, when the amount of irradiation light is large even for a short period of time, the polymerization of the composition, that is, the temporary polymerization during correction, can be quickly carried out without generating a large amount of heat, without causing the deformation.

Further, when the above-mentioned modification and processing are completed and a complete denture base 10 is to be obtained, the change-over switch 18 is switched to the lighting side of the fluorescent lamp 11, and the timer 17 is set to, for example, 8 minutes. In this case, since the amount of light irradiated by the fluorescent lamp is small, the time-consuming process for polymerization is almost completed, so consideration of time is not so important.In fact, consideration must be given to prevent deformation, but to avoid reflections. Together with the reflecting plate from the plate 13, the photocurable dental composition is uniformly cured (main polymerization) over the entire denture base 10.
In this way, partial temporary polymerization and main polymerization can be arbitrarily performed during the process of creating the denture base 10 by operating the changeover switch 18 and the timer 17,
Overall, it is possible to improve the efficiency and speed of the work up to the completion of dentures.

Next, operations for carrying out the above temporary polymerization and main polymerization will be described. First, open the lid 3 by holding the handle 5 as shown by the chain line. Then, the table 9 faces the opening of the case 1, and a denture material to be temporarily polymerized or fully polymerized, such as the denture base 10, is placed on the table 9. Subsequently, the lid 3 is closed while being rotated in a direction to close the opening. Therefore, the connecting rod 8 enters into the case 1, and the sliding member 7 hinged to one end of the connecting rod 8 moves up along the guide rod 6 and stops at a predetermined position. This stop position is adjusted in advance based on the amount of light and heat of the halogen lamp 12 and the fluorescent lamp 11.
In this state, the preliminary polymerization and main polymerization operations described above are carried out, and after completion of the operations, the lid 3 is opened as shown in FIG. 1, and the denture base 10 can be taken out.

In the above, in order to adjust the amount of light or heat to the optimum value, by adjusting the hinge connection position of the connecting rod 8 to the lid 3, it is possible to adjust the amount of light or heat to the halogen lamp 12 or fluorescent lamp 11 when the lid 3 is closed. The distance to the stand 9 may be arbitrarily selected.

Furthermore, if necessary in the present invention, after the temporary polymerization, an air shielding agent (air barrier coat) is applied to the entire surface of the photocurable dental composition that is the denture base 10, or an air shielding agent (air barrier coat) is applied underwater or with various shielding materials. The main polymerization can also be carried out completely by shielding air and the photocurable dental composition. Furthermore, if complete polymerization does not occur, some stickiness remains on the surface after polymerization, and a photocurable dental composition can be further laminated on top and processed. It is also known that after main polymerization, a surface lubricant is used to irradiate ultraviolet rays to make the surface of a denture base etc. lubricated.

<Effects of the invention> As explained in detail above, according to this invention, a high-intensity lamp for temporary polymerization with different light intensities and a circular fluorescent lamp for main polymerization are provided, and a photocurable dental lamp is used for these lamps. guide the guide support member for the dental material to an optimal position where thermal deformation of the dental material of the composition will not occur, and selectively turn on the high-intensity lamp and the circular fluorescent lamp using a switch. Therefore, the temporary polymerization and main polymerization of the photocurable dental composition of the dental material can be carried out effectively and quickly without deforming the dental material. As a result, effects such as speeding up the modification and completion of the dental materials such as denture bases can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing an embodiment of the light irradiation device according to this invention, and FIG. 2 is a front view of the same. 1...Case, 3...Lid, 6...Guide rod, 7
...Sliding member, 8... Linking rod, 9... Placement stand, 10...
...Dental materials, 11...Fluorescent lamp, 12...Large light intensity lamp, 18...Switching switch.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) By irradiating a dental material such as a denture base containing a photocurable dental composition with light in a light irradiation device that polymerizes and hardens it by irradiating it with light,
A circle-shaped fluorescent lamp for main-polymerizing the photocurable dental composition and a high-intensity lamp for pre-polymerizing the photocurable dental composition, and a guide support member for guiding and supporting the dental material at positions facing the fluorescent lamp and the high-intensity lamp, respectively. and a changeover switch for selecting lighting of either the fluorescent lamp or the high-intensity lamp. (2) The guide support member includes a table on which dental materials are placed;
A light irradiation device for a photocurable dental composition according to claim 1, which is characterized by comprising a support rod that supports the table in a vertically movable manner. (3) Registration of a utility model characterized in that a fluorescent lamp and a high-intensity lamp are installed in a case, and the stand is moved up and down in response to the opening and closing operations of the lid for loading and unloading dental materials into the case. A light irradiation device for the photocurable dental composition according to claim 2.