JPH0440656Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a visible light polymerization rebase material curing device for photocuring a visible light polymerization rebase material for an ill-fitting denture base lining in the oral cavity.

(Conventional technology) Preventing the denture base from falling off from the palate and alveolar arch mucosa by more accurately repairing the compatibility between the denture base and the oral mucosa, which has conventionally become incompatible due to changes over time. things are being done.

This is ``lining'' or ``refabrication'' of ill-fitting dentures.
When the occlusal relationship is accurate but the denture base no longer fits the mucosal surface, a new base material can be used to support the denture base without changing the occlusal relationship while leaving the artificial tooth as it is. This is a process that attempts to re-match the denture base and mucous membrane, and is generally referred to as ``rebase.''

These methods include the direct method and the indirect method.The direct method uses room-temperature polymerization resin and directly adapts it to the mucosal surface in the oral cavity and polymerizes it as it is.It can be easily performed on the cheer side and has good compatibility. However, there are problems in that the strong irritation caused by the resin monomer and the heat generated during polymerization cause extreme discomfort to patients, and the problem that the rebase material is deteriorated by the amine.

In addition, the indirect method uses a heat-polymerized resin that polymerizes when heated, and although it is a physically superior material, the technical operations such as impression, burial, and resin insertion are complicated.

Furthermore, since heating operations are involved, the denture base deforms, causing problems with its fit.

On the other hand, photopolymerized resins have recently come to be used without the disadvantages of the above methods, and in particular, safe resins that are polymerized and cured by visible light rather than ultraviolet light are being used for denture restoration and rebase. It is being applied.

Multifunctional acrylate resins (polyol acrylate, polyester acrylate, etc.) are widely used as visible light polymerizable resins, and paste-like or sheet-like prepolymers (e.g. "Epolex": trade name (NOF) (KK))))
Polymerization and curing is performed by irradiating visible light.

(Problems to be solved by the invention) As mentioned above, rebase by photopolymerization is preferable, but it is also possible to attach a paste or sheet-like visible light polymerizable resin material (rebase material) to the denture base surface in contact with the mucous membrane. This is placed into the oral cavity, and impressions are taken by repeatedly applying pressure to mucous membranes such as the palate and alveolar arch, and forming streaks.When removing the impression, touch the surrounding lips, tongue, and other mucous membranes, and touch the denture base. The photopolymerizable resin material at the edge (which is soft because it is not exposed to light) may sometimes become deformed.

At this stage, especially if the peripheral area is deformed, the future
The product denture base partially hits the oral mucosa, causing ulcers and causing pain. Furthermore, the airtightness is lost and air enters, making it very easy for the denture base to separate from the mucosal surface. Therefore, the operator must be extremely careful and skilled in this extraction process.

(Means for Solving the Problems) The present invention was made as a result of various studies to solve the above problems. By using the rebase material curing device of the present invention, the operator can easily, safely and reliably This allows for excellent direct rebasing of denture bases.

In other words, the present invention is composed of a grip part with a built-in visible light supply light source and a U-shaped visible light irradiator made of a light conductive material such as transparent resin or glass extending in front of the grip part, and The U-type visible light irradiation device is characterized by having a visible light irradiation surface on one side and a reflector on the other side, and is a visible light polymerized rebase material curing for the intraoral lining of an ill-fitting denture base. It is a device.

The reflector of the above U-shaped visible light irradiator in plan view is composed of a metal reinforcing frame and reflector, and the inside thereof is loaded with a light conductive material such as transparent resin, glass, or optical fiber assembly. , it is also preferable to ensure homogeneous visible light irradiation.

In the above, the light irradiation surface is located on one side (e.g., the bottom surface) of the U-shaped visible light irradiation device in plan view, and the inner surfaces of the other sides (e.g., side and top surfaces) are used as light reflection surfaces to improve the efficiency of light irradiation to one side. Increase.

The shape of the visible light irradiation tool is U-shaped in plan view and approximately arch-shaped, and the shape is suitable for photo-curing the denture base, especially the rebase material attached to the edge of the denture base. .

Therefore, it is preferable that the U-shaped visible light irradiator in plan view has a width slightly wider than the tooth width of the dental arch (enough to cover the front and back sides of the teeth).

For dentures with a width slightly wider than the tooth width, it is possible to photo-cure the denture base from the inner edge of the denture base to the rebase material near the outer edge at the same time in the oral cavity. , the inner surface of the denture can be stably brought into contact with the outer surface of the denture tooth row, and the light irradiation surface can be interposed between the buccal flesh and the denture tooth row, making it easy to rebase the material near the outer edge of the denture base. It can be photocured.

The shape of the visible light irradiation tool is as above,
The connection with the light source part is made by extending and integrating the grip part containing the light source by screw connection or the like.

The role of a grip such as a pistol-type grip that can be held with fingers is not only to ensure ease of operation and stability, but also to accommodate a light source.

As the light source, a halogen lamp, a xenon lamp, or the like that emits visible light with a main wavelength of around 500 nm is preferable, but one with an appropriate wavelength may be selected and used depending on the type of visible light polymerizable resin.

(Example) Next, an example of the present invention will be described with reference to the accompanying drawings.

Fig. 1 is a partially cutaway schematic perspective view of an embodiment of the device of the present invention, and Figs. 2 1 to 5 show schematic diagrams of the direct method process for rebasing a denture base in the oral cavity using the embodiment of the device of the present invention. It is something.

In FIG. 1, 1 is a transparent glass visible light irradiation tool, 2 is a light irradiation surface, 3 is a lamp (light source), 4 is a power source (battery), and 5 is a grip part.
The operator inserts the visible light irradiation tool 1 into the patient's oral cavity while grasping the grip part 5 with his/her fingers, and the visible light irradiation device 1 is visible from the light irradiation surface 2, especially near the photopolymerizable resin material (rebase material) at the edge of the denture base. It irradiates light (see Fig. 2, 5).

The lower surface of the visible light irradiator 1 serves as a light irradiation surface 2, while the other upper surface serves as a light reflector 7 that also serves as a metal visible light irradiator reinforcing frame.

Next, a direct method of rebasing a denture base using the embodiment device will be explained with reference to FIGS. 2 1 to 5.

First, on the floor surface 12 including the floor edge part 11 of the complete denture 10 which has become unfit due to aging,
Visible light polymerizable sheet rebase materials 13 are stacked (FIG. 2, 1).

Next, the sheet-shaped rebase material 13 is tightly laminated on the denture base 12 using fingers and the pressing rod 14 (FIG. 2), and the excess protruding portion of the rebase material 13 is cut off to ensure that the uncured rebase material adheres. A denture base 15 is obtained (FIG. 2, 3: back surface, 4: front surface).

Thereafter, the uncured rebase material-adhered denture base 15 is inserted into the oral cavity, and the denture base 15 is bitten and pressed against the palate, alveolar arch mucosa 16, etc., and muscle formation is repeated.

As a result, the denture base 15 is fitted onto the mucous membrane 16 such as the alveolar arch by adjusting the thickness of the uncured rebase material, and then visible light is irradiated from the irradiation surface 2 of the visible light irradiation tool 1 to particularly illuminate the denture base. The rebase material 17 near the edge 11 is polymerized and hardened (FIG. 2, 5)). At this time, since visible light has better transparency than ultraviolet light, it passes through the resin denture base and even reaches the back surface thereof.

Note that this curing treatment by visible light polymerization may not be performed completely, but may be only temporary curing. The reason for this is that, when the denture base to which the rebase material is attached is removed from the alveolar arch mucosa, the rebase material 17 on the denture base edge 11 can be almost prevented from deforming if it is temporarily hardened.

Finally, the complete denture with the rebase material attached was removed from the oral cavity and placed in a high-intensity visible light irradiation device, and after the uncured rebase material was completely polymerized and hardened, some finishing processing was performed. As a finished product.

(Effects of the invention) As described above, the visible light polymerized rebase material curing device of the present invention is compact and easy to grasp and operate.If the device of the present invention is used, when removing the rebase material-attached denture base from the mucous membrane such as the alveolar arch, Deformation of the rebase material at the edge of the denture base can be prevented.

As a result, a complete denture that has become unfit due to aging can be easily and reliably repaired to one with excellent fit.

In addition, since the light source of the device of the present invention is not inserted into the oral cavity, safety can be ensured.

Furthermore, since it targets photopolymerization using visible light, it is not as harmful as ultraviolet light.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway schematic perspective view of an embodiment of the device of the present invention, and Figs. 2 1 to 5 show schematic diagrams of the direct method process for rebasing a denture base in the oral cavity using the embodiment of the device of the present invention. It is something. In the figure, 1...visible light irradiation tool, 2...light irradiation surface,
3... Light source, 4... Power supply, 7... Reinforcement frame/light reflector, 10... Complete denture, 11... Denture base edge, 12... Floor surface, 13... Photopolymerizable sheet-like rebase material, 14...pressing rod, 15...denture base with uncured rebase material attached, 16...alveolar arch mucosa, 1
7... Denture base edge rebase material.

Claims (1)

[Scope of utility model registration request] It consists of a grip part with a built-in visible light supply light source and a U-shaped visible light irradiator made of a light-conducting material such as transparent resin or glass extending in front of the grip part, and a U-shaped visible light irradiator made of a light conductive material such as transparent resin or glass. A visible light polymerization rebase material curing device for intraoral lining of an ill-fitting denture base, characterized in that the irradiation tool is provided with a visible light irradiation surface on one side and a reflector on the other side.