JPH0852162A - Photopolymerization device for curing of visible ray polymerized dental restoration material - Google Patents

Abstract

PURPOSE:To avoid adverse influences of infrared rays in a photo polymerization device which irradiates restoration material for dental treatment made of photocured resin. CONSTITUTION:The rays radiated from the lamp 2 by way of a spherical reflection mirror 3 on the side are condensed and collected on a flat reflection mirror 4 slanting at the angle of 45 which infrared rays penetrate but on which visible rays are reflected, and after infrared rays are removed at the reflection mirror 4, only visible rays are reflected downward. Then the reflected rays are beamed as diffused light to a convex lens 6, and the rays having penetrated the lens 6 become parallel light and equally irradiate the restoration material 7 below.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photopolymerization apparatus for irradiating a dental restorative member made of a photocurable resin with light so as to polymerize and cure the same, and more particularly to a visible light-curable dental restorative member on a table with visible light. The present invention relates to a photopolymerization apparatus for curing a visible light-polymerizable dental restorative member which is uniformly irradiated and uniformly polymerized and cured.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
During restoration work in which a photopolymerizable dental restorative member is applied to the damaged denture base surface and polymerized and cured, the restorative member made of the applied photopolymerizable resin prepolymer is irradiated with light to polymerize and cure it. Is widely practiced. Recently, visible light has been used as irradiation light instead of ultraviolet light, which is harmful to the human body. At the time of implementation, a light emitting lamp with a spherical reflecting mirror is installed downward at the uppermost position just above the table for mounting the visible light polymerizable dental restoration member,
Furthermore, an infrared removal filter is placed underneath it,
The visible light-curable dental restorative member arranged at the lowermost position is irradiated with visible light. However, the light emitted from the above-mentioned light-emitting lamp cannot sufficiently remove infrared rays even if a filter is interposed, and the light distribution becomes non-uniform, causing local heat generation, which causes uneven polymerization and curing of the visible light-polymerizable resin. Occurred, which deteriorated the molding accuracy and material characteristics of the product. Further, the emitted light from the light emitting lamp is not a uniform parallel light beam, and there is a problem that uneven irradiation light occurs unless the distance from the light emitting lamp to the photopolymerizable resin of the dental restorative member is precisely adjusted. In addition, the device is a table-filter-
Since the lens-light emitting lamps are arranged vertically in a straight line, there is a risk that the height of the lens may be high and the lamp may fall over, and sufficient stability is not guaranteed.

[0003]

As a result of research to solve the above problems, the present inventors have developed a photopolymerization apparatus for curing a visible light polymerizable dental restorative member of the present invention as described below. . (1) A convex lens 6 is horizontally arranged above a table 7 for placing a visible light-polymerizable dental restorative member installed in the lower part of the device housing, and infrared transmission / visible light reflection type reflection is further provided above it. A mirror 4 is tilted, and a light emitting lamp 2 which is an emission light source is arranged on the side of the reflecting mirror toward the reflecting mirror 4 surface.
The convex lens 6, the reflecting mirror 4, and the light emitting lamp 2 are arranged in a positional relationship such that a light ray emitted from the light emitting lamp 2 is focused on the surface of the reflecting mirror 4 and a visible light ray reflected from the reflecting mirror 4 is a divergent light ray. Then, the passing light rays that are incident on the convex lens 6 below and are further guided downward from the convex lens 6 are arranged in such a positional relationship that the light rays become parallel rays. A photopolymerization apparatus for curing a visible light-polymerizable dental restorative member, characterized in that the visible light-polymerizable dental restorative member 8 on the table 7 is uniformly irradiated with light so that it can be uniformly polymerized and cured. (2) Above the table 7 for placing the visible light-polymerizable dental restorative member installed in the lower part of the apparatus housing, a horizontally arranged convex lens 6 is interposed, and an infrared ray transmitting / visible ray reflecting type plane reflecting mirror is provided. 4 is inclined at an angle of 45 °, and a light emitting lamp 2 having a spherical reflecting mirror 2a which is a light source for emission is disposed on the side of the flat reflecting mirror 4 so as to face the plane reflecting mirror 4; As for the positional relationship between them, the light rays emitted from the light emitting lamp 2 via the spherical reflecting mirror 2a are collected on the surface of the reflecting mirror 4 tilted at 45 °, the infrared rays are removed by the reflecting mirror 4, and the visible light rays are directed downward. Is reflected, and then the reflected visible ray becomes a divergent ray and enters the horizontally arranged convex lens 6, passes through the convex lens 6 and is converted into a parallel ray, and the visible light polymerizable dental restoration on the lower table 7 is reflected. The member 8 is uniformly irradiated with visible light, and it is evenly polymerized and cured. A photopolymerization apparatus for curing a visible light-polymerizable dental restorative member, which is arranged as much as possible. (3) The visible light polymerizable dental restoration as set forth in (1) or (2), wherein the light emitting lamp 2 with the spherical reflecting mirror 2a is formed by forming a spherical reflecting film in the light emitting lamp. Photopolymerization device for curing parts.

[0004]

In the device of the present invention, the light rays emitted from the light emitting lamp 2 are collected on the surface of the reflecting mirror 4, and the reflected light rays from the reflecting mirror 4 become divergent rays and enter the convex lens 6 below. Further, it is irradiated from the same convex lens 6 downward as uniform parallel rays. Therefore, the visible light rays that have been converted into parallel rays can uniformly irradiate the visible light-curable dental restoration member 8 on the lower table 7 with light, and can be uniformly polymerized and cured. Since the light rays passing downward from the convex lens 6 are uniform parallel rays, even if the height of the photopolymerizable dental restorative member 8 on the table 7 is at any position, it is uniform to the photopolymerizable dental restorative member. Since the irradiation visible light is applied, it is not necessary to precisely adjust the height of the dental restoration member as in the prior art. Further, since the light emitting lamps are arranged in the lateral direction by using the tilted reflecting mirror, the height of the device can be reduced, and the device is compact and sufficient installation stability can be secured.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view of an apparatus according to an embodiment of the present invention (Y- in FIG. 2).
2 is a sectional view taken along line XX 'in FIG. 1, and FIG. 3 is a plan view. In the figure, 1 is the apparatus main body, 2 is a light emitting lamp, 2
a is a spherical reflecting mirror, 3 is a separating plate, 3a is a ventilation hole, 3b is a tilt plate for adjusting the air supply airflow, 4 is a tilted infrared ray transmitting / visible ray reflecting (flat) reflecting mirror, and 5 is heat radiation of infrared rays. Plate, 6 convex lens, 7 visible light polymerizable dental restorative member, 8 (turn) table, 9 air supply / exhaust device, 9a exhaust device, 9b
Is an air supply device, 10 is a drive device (motor), 11 is a control device housing chamber, 12 is a front lid, 13 is a pulling handle, 14 is a guide rail, 15 is a dust removing filter, and 16 is a pull-out type support. A dental restoration member 7 made of a visible light-polymerizable resin prepolymer placed on the surface of the table 8 is arranged in the lower portion of the housing of the apparatus 1 of the present embodiment. The table 8 has a turntable structure which is rotated by a lower drive device 10 so as to completely prevent uneven irradiation of visible light on the dental restoration member 7.

In the upper part of the apparatus 1, an infrared transmitting / visible light reflecting type flat reflecting mirror 4 is installed above the table 8 and inclined forward and downward at an angle of 45 °. A heat radiating plate 5 is attached to the back surface of the plane reflecting mirror 4 to allow the light emitting lamp 2
Avoids heat generation due to light irradiation from the. Further, a convex lens 6 is disposed horizontally below the tilted plane reflecting mirror 4. Further, on the side of the plane reflecting mirror 4, a light emitting lamp 2 having a spherical reflecting mirror 2a as an emission light source is arranged toward the plane reflecting mirror 4 surface. Since the light-emitting lamp 2 is a light source for polymerizing and curing the visible light-polymerizable resin prepolymer, a lamp having a large amount of light,
For example, a halogen lamp is used. The back surface of the light emitting lamp 2 is covered by a spherical reflecting mirror 2a, and most of the emitted light rays emitted from the light emitting lamp 2 to each direction are focused forward. Instead of the light emitting lamp 2 having the spherical reflecting mirror 2a, a spherical reflecting film may be formed in the light emitting lamp 2 by metal vapor deposition.

In the photopolymerization device having the above structure, since the light emitting point of the light emitting lamp 2 is set outside the focal point of the spherical reflecting mirror 2a and inside the spherical center thereof, the reflected light rays are along the optical axis in the lateral direction. And the light is condensed by the plane reflecting mirror 4 inclined at 45 °.
Is condensed and reflected on the mirror surface of. Infrared rays are transmitted through the reflecting mirror 4 and are removed by the infrared radiation plate 5 on the back surface.
Visible rays are refracted and reflected, and become divergent rays, which are projected onto the convex lens 6 below. Further, the divergent light beam from the reflecting mirror 4 passes through the convex lens 6 to be converted into a parallel light beam and is irradiated downward. The emitted light beam directly emitted from the light emitting lamp 2 without passing through the spherical mirror 2a is refracted and reflected by the flat reflecting mirror 4, projected onto the convex lens 6 below the installation position, passes through,
The parallel light rays are applied to the visible light-curable dental restoration member 7 below. As described above, since the passing light rays that have passed through the convex lens 6 are emitted downward as uniform parallel light rays,
Regardless of the height position of the lower photopolymerizable dental restorative member, uniform visible light is irradiated at each height position.

An auxiliary lamp is provided on the inner side surface of the housing of the apparatus 1 so that visible light is emitted from the entire side surface of the restoration member 7 on the table so that the illumination can be performed without shadow. Realization is also preferable. Further, 9 is an air supply / exhaust device,
Reference numeral 9a denotes an exhaust device, and 9b denotes an air supply device. First, outside air is introduced into the device casing by the air supply device device 9b through the dust removal filter 15, and the introduced air becomes an air flow indicated by an arrow, and a table is formed. The visible light polymerizable dental restorative member on 8 and then the gap 3 between the convex lens 6 and the front lid 12
0 rises to cool the infrared radiation plate 5, and
The light-emitting lamp 2 is cooled by passing through the ventilation holes 3a, 3a formed in the upper separating plate 3, and then sucked to the outside by the exhaust device 9b, and is discharged as hot air to the outside. At this time, the inside of the housing is roughly divided into two chambers, the upper chamber and the lower chamber, by the separator plate 3 and the convex lens 6 and the like. The temperature of the photopolymerizable dental restorative member does not rise and does not flow into the lower chamber, which requires relatively low temperature retention. Furthermore, by extending the inclined plate 3b for adjusting the supply airflow obliquely downward from the end of the separator 3, the airflow introduced into the room by the air supply device 9b is concentrated on the visible light polymerizable dental restoration member 7. Can be sent to. A lower portion of the (turn) table 8 is a drawer type support body 16, in which a drive device (motor) 10 is housed, and a drawer handshake 13 is provided in the front. The pull-out type support 16 is
It can be pulled out of the apparatus by being guided by the guide rails 14, and the dental restorative member 7 can be placed on the turntable 8 or taken out at the pulled-out position. Further, various timers, temperature sensors, semiconductor integrated circuits, and other control devices that automatically operate the apparatus are housed in the control device housing chamber 11.

[0009]

According to the photopolymerization apparatus for a visible light-polymerizable dental restorative member of the present invention, the uniform visible light converted into parallel rays uniformly irradiates the visible light-polymerizable dental restorative member on the table, It can be uniformly polymerized and cured. Further, since the light rays passing downward from the convex lens are uniform parallel light rays, the photopolymerizable dental restorative member is uniformly irradiated regardless of the height position of the photopolymerizable dental restorative member on the table. Since the visible light is applied, it is not necessary to precisely adjust the height of the dental restoration member as in the prior art. The device of the present invention has a short height, is compact, and has good installation stability.

[Brief description of drawings]

FIG. 1 is a sectional view of an apparatus according to an embodiment of the present invention (YY ′ in FIG. 2).
Sectional view).

FIG. 2 is a cross-sectional view taken along line X-X ′ of FIG.

FIG. 3 is a plan view of an apparatus according to an embodiment of the present invention.

[Explanation of symbols]

1: Device main body 2: Light emitting lamp 2a: Spherical reflecting mirror 3: Separator plate 3a: Vent hole 3b: Sloping plate for adjusting the supply airflow 4: Inclined infrared transmitting / visible light reflecting (flat) reflecting mirror 5: Infrared heat dissipation plate 6: Convex lens 7: Visible light polymerizable dental restoration member 8: (Turn) table 9: Air supply / exhaust device 9a: Exhaust device 9b: Air supply device 10: Drive device (motor) 11: Control device accommodation chamber 12 : Front cover 13: Pull-out handle 14: Guide rail 15: Dust removal filter 16: Pull-out type support 30: Gap

Claims (3)

[Claims] 1. A convex lens 6 is horizontally arranged above a table 7 for placing a visible light-polymerizable dental restorative member installed in a lower portion of an apparatus housing, and an infrared ray transmitting / visible ray reflecting type is provided above the convex lens 6. The reflecting mirror 4 is inclined, and a light emitting lamp 2 which is an emission light source is disposed on the side of the reflecting mirror toward the surface of the reflecting mirror 4, and the convex lens 6, the reflecting mirror 4 and the light emitting lamp 2 are provided.
As for the positional relationship with, the emitted light from the light-emitting lamp 2 is collected on the surface of the reflecting mirror 4, and the visible light reflected from the reflecting mirror 4 becomes a divergent light and is incident on the convex lens 6 below. The light rays passing downward from the convex lens 6 are arranged in such a positional relationship that they become even parallel light rays, and the visible light rays made into parallel light rays are visible light polymerizable dental restoration member 8 on lower table 7. A photopolymerization device for curing a visible light-polymerizable dental restorative member, characterized in that it is uniformly irradiated with light so that it can be uniformly polymerized and cured. 2. An infrared ray transmitting / visible ray reflecting flat surface with a horizontally disposed convex lens 6 interposed above a table 7 for placing a visible light polymerizable dental restorative member installed in a lower portion inside an apparatus housing. The reflecting mirror 4 is tilted at an angle of 45 °, and a light emitting lamp 2 having a spherical reflecting mirror 2a, which is a light source for emission, is arranged on the side of the flat reflecting mirror 4 so as to face the flat reflecting mirror 4. ,
Moreover, the arrangement positional relationship is that the emitted light beam from the light emitting lamp 2 through the spherical reflecting mirror 2a is inclined by the 45 ° reflecting mirror 4 described above.
The light is collected on a surface, infrared rays are removed by the reflecting mirror 4, and visible light rays are reflected downward. Then, the reflected visible light rays are divergent light rays and enter the convex lens 6 in the horizontal arrangement. The visible light-polymerizable dental restorative member 8 on the lower table 7 is uniformly irradiated with visible light after passing through, and is arranged so that it can be uniformly polymerized and cured. Photopolymerization device for curing dental restoration members. 3. A light emitting lamp 2 having a spherical reflecting mirror 2a,
The photopolymerization device for curing a visible light-polymerizable dental restorative member according to claim 1 or 2, wherein a spherical reflective film is formed in the light emitting lamp.