KR102575220B1 - Light curing apparatus for manufacturing dental hybrid composite resin block - Google Patents

Abstract

The present invention relates to a photopolymerizer, and more specifically, to a hybrid composite resin block for dental use, which can manufacture dental prostheses such as inlays, artificial teeth, crowns, and bridges through CAD/CAM processing by photopolymerizing compression molded articles. It relates to a photopolymerizer for the manufacture of.

Description

Light curing apparatus for manufacturing dental hybrid composite resin block}

The present invention relates to a photopolymerizer, and more specifically, to a hybrid composite resin block for dental use, which can manufacture dental prostheses such as inlays, artificial teeth, crowns, and bridges through CAD/CAM processing by photopolymerizing compression molded articles. It relates to a photopolymerizer for the manufacture of.

In dentistry, dental prosthetic restorative materials used for inlays, artificial teeth, crowns, and bridges to replace lost teeth and parts of teeth due to damage or loss due to tooth decay or fracture are largely divided into resin, ceramic, and metal. can In recent years, composites in which organic materials and inorganic materials are mixed have been developed, and can be largely classified into four types such as metals, ceramics, polymers, and composites. These dental materials are variously used in dentistry according to characteristics such as aesthetics and physical properties to suit the patient's condition.

In the resin used in dentistry, numerous monomers made of covalent bonds of carbon and hydrogen form a polymer chain, and after polymerization, a polymer is formed. Resin is used for various purposes such as cavity filling materials, denture bases for complete dentures or partial dentures, artificial teeth, dental adhesives (resin based cement), colorants, restorative materials, orthodontic appliances, and denture base liners.

Dental resins can also be classified into heat-polymerizing resins, self-polymerizing resins, light-polymerizing resins, and the like according to compositional components and polymerization mechanisms.

In dentistry, a composite resin composed of organic polymers and inorganic fillers is called composite resin. While metal materials have excellent physical properties, they have the disadvantage of being unesthetic and do not bond well with teeth, so many tooth preparations are required to prevent restorations from falling out, whereas composite resins have excellent aesthetics and can reduce tooth preparations, thereby preventing loss. It has the advantage of strengthening vulnerable structures by Composite resins can be classified into photopolymerization type, self-polymerization type, and dual polymerization type according to the polymerization method. The photopolymerization type is polymerized by exposure to light of a specific wavelength according to the photopolymerization initiator, and the self-polymerization type is gradually cured and polymerized over time, and the dual polymerization type is a method in which both processes are performed. Recently, the composite material most commonly used as a direct restorative material in dentistry is a light-curing composite resin.

Photopolymerizable composite resins are generally supplied in a paste state, but do not harden during storage, and can be polymerized only when exposed to light of a specific wavelength capable of polymerizing the compound. Light-curing resins have many advantages over self-curing resins. In other words, since there is no mixing, the risk of air intervention is minimized, so bubble formation is minimized, and resin polymerization does not start before exposure to light of an appropriate wavelength, so it is easy to store, and the operator can control the working time and shape It is easy to do, the polymerization time is short, so the working time is also shortened, and the physical properties are excellent because the filler is added.

Since light-curing composite resin was put into practical use in the 1970s, it has opened a new chapter in aesthetic dental restoration and the technology of the material has been continuously developed.

Since ultraviolet light, which was initially adopted as polymerization light, had disadvantages such as harmfulness to the human body and weak penetrating power to composite resins, LED light in the visible light region that is safe to the human body and can polymerize more deeply in a shorter time compared to ultraviolet light or Halogen light is now commonly used.

Recently, in the field of dentistry, with the advent of digital equipment such as CAD/CAM and 3D printers, the manual work area and the period of dental prosthesis production are significantly reduced. Such automated equipment can manufacture a dental prosthesis by cutting, milling, and processing the prosthesis in an accurate shape and shape at a faster speed and with a lower amount of labor than conventional manual methods. Dental prosthetic materials using CAD/CAM typically use a mill blank, that is, a solid blank that is the material from which the prosthesis is cut or sculpted. Recently, various materials such as zirconia, glass ceramic, metal, wax, PMMA, PEEK, and hybrid composite materials are applied to dental materials manufactured using CAD/CAM systems. Since its introduction in 1937, PMMA (polymethyl methacrylate) has been widely used in clinical practice for reasons such as color stability, volume stability, transparency, tissue compatibility, and relatively low toxicity. In addition, it is widely used as a variety of restorative materials such as temporary dentures, denture bases, implant superstructures, and splints for temporomandibular joint patients. However, problems such as polymerization shrinkage, water absorption of denture base resin, volume change due to thermal expansion, low wear and strength, discoloration, and allergic reaction to unreacted monomers have been pointed out.

PEEK material is also a material widely used in orthopedic surgery due to its excellent physical properties. Research is also being conducted for CAD/CAM cutting for dentistry, but it has the disadvantage of being opaque. Among prosthetic restorative materials for esthetic CAD/CAM cutting in dentistry, zirconia blocks are widely used. Although they have many advantages such as excellent aesthetics and physical properties of ceramics, they are released in a semi-sintered state due to CAD/CAM cutting, etc. There is a cumbersome point of having to sinter again after cutting. In addition, ceramic-based composite materials for cutting have recently been introduced, but they are also very hard, so there are disadvantages of excessive wear of cutting tools, long manufacturing time for dental prostheses, and damage to opposing teeth due to high hardness. In order to compensate for these disadvantages, research on hybrid composites in which organic and inorganic fillers are mixed as prosthetic restorative materials for CAD/CAM cutting has recently been actively conducted.

On the other hand, such a dental hybrid composite resin block has a problem in that it is not easy to uniformly irradiate light to the entire compression molded product in order to cure the compression molded product through photopolymerization after compression molding of the raw material.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a photopolymerizer capable of improving the efficiency of photopolymerization by uniformly irradiating light with a desired intensity and range to the outside of a compression molded article.

Another object of the present invention is to provide a photopolymerizer capable of optimally setting photopolymerization conditions by controlling the temperature of a space where photopolymerization is performed and performing thermal polymerization as well as photopolymerization.

In order to achieve the above object, the present invention is an enclosure having an open front and an internal space; a door hinged on the front surface of the enclosure to open and close the inner space; A molded object holder capable of placing a molded object for photopolymerization in the center of the inner space; a lower light source for irradiating light for photopolymerization from a lower portion of the inner space to a lower surface of the molded body; and an upper light source for radiating light for photopolymerization from the upper part of the inner space to the upper surface of the molded body, and photopolymerizing the molded body to provide a photopolymerizer for manufacturing a dental hybrid composite resin block.

In a preferred embodiment, the molded object holder: is installed in the horizontal direction in the center of the inner space, spaced side by side in the front and rear direction and is installed in a plurality of pieces, the mounting rod capable of placing the molded object on top; and a hanging stand attached to both inner sides of the enclosure and having a groove through which an end portion of the mounting rod can be hung, wherein a plurality of grooves spaced apart from each other in the front-back direction are formed on each hanging stand, and the size of the molded body is formed. According to this, the distance between the rods can be adjusted and hung in the groove.

In a preferred embodiment, the mounting rod is made of transparent quartz or borosilicate glass so that the light emitted from the lower light source can be transmitted to the lower surface of the molded body.

In a preferred embodiment, the lower light source or the upper light source may move up and down toward the mounting bar and adjust the intensity and range of light irradiated to the molded body.

In a preferred embodiment, the upper light source: silver, LED substrate; a board mount on which the LED board is mounted; a support bar having a lower end passing through the upper surface of the housing and attached to the substrate mounting table, and an upper end exposed to the upper portion of the housing body and moving up and down to move the substrate mounting table up and down; and a clamp fastened to the support rod from the outside of the enclosure and contacting the upper surface of the enclosure to fix the support rod so that it does not fall into the inner space of the enclosure.

In a preferred embodiment, the upper light source: further includes a guide rod spaced parallel to the support rod and having a lower end penetrating the upper surface of the enclosure and attached to the board mounting table, wherein the guide rod is mounted on the upper and lower sides of the mounting rod. to prevent shaking when moving.

In a preferred embodiment, the enclosure has a power supply module for receiving external power and supplying it to the upper light source and the lower light source, and controlling the intensity and time of power supplied from the power supply module to the upper light source and the lower light source. A control module is provided.

In a preferred embodiment, the enclosure is provided with a fan for cooling the inner space and a temperature control module capable of adjusting the temperature of the inner space from 0°C to 120°C.

The present invention has the following excellent effects.

According to the photopolymerizer of the present invention, light of a desired intensity and range can be evenly irradiated to the upper and lower portions of the compressed molded article, so that the effect of photopolymerization can be greatly improved.

In addition, according to the photopolymerizer of the present invention, the photopolymerization conditions can be optimally set by controlling the temperature of the inner space of the enclosure, and there are advantages in that not only photopolymerization but also thermal polymerization can be performed.

1 is a view showing a hybrid composite resin block polymerized with a photopolymerizer according to an embodiment of the present invention;
2 is a view showing the appearance of a photopolymerizer according to an embodiment of the present invention;
3 and 4 are views showing the inside of a photopolymerizer according to an embodiment of the present invention.

The terms used in the present invention have been selected from general terms that are currently widely used as much as possible, but in certain cases, there are terms arbitrarily selected by the applicant. Therefore, its meaning should be understood.

Hereinafter, the technical configuration of the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.

However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Like reference numbers indicate like elements throughout the specification.

1 is a view showing a hybrid composite resin block polymerized with a photopolymerizer according to an embodiment of the present invention.

Referring to FIG. 1 , a photopolymerizer according to an embodiment of the present invention is a device for manufacturing a hybrid composite resin block 1 by photopolymerizing and curing compression-molded raw materials.

In addition, the hybrid composite resin block 1 is fabricated into a dental prosthetic restoration product 2 through CAD/CAM cutting, and the manufactured dental prosthetic restoration product 2 is mounted on a patient.

That is, the photopolymerizer of the present invention is a device for polymerizing the hard hybrid composite resin block 1 for manufacturing the dental prosthetic restorative material 2 .

2 is a view showing the appearance of a photopolymerizer according to an embodiment of the present invention.

Referring to FIG. 2 , as described above, the photopolymerizer 100 is a device capable of producing a hybrid composite resin block 1 after photopolymerizing a compression molded raw material 1a.

3 and 4 show the inside of the photopolymerizer 100, the photopolymerizer 100 includes a housing 110, a door 120, It includes a molded object holder 130, a lower light source 140 and an upper light source 150.

The housing 110 is provided with an internal space 111 in which a compression-molded raw material (1a, hereinafter referred to as a 'molded body') can be placed and the front surface is open.

In addition, in the present invention, the housing 110 is illustrated as having a hexahedral shape with an open front surface, but it can be manufactured in any shape as long as the inner space 111 is formed and one surface is open.

The door 120 is a door that is hinged on the front surface of the enclosure 110 to open and close the inner space 111 .

In addition, although the drawing shows that the lower end of the door 120 is hinged to the front of the enclosure 110, one side end or upper end may be hinged and fastened to the front of the enclosure 110, of course.

In addition, the door 120 can be made of a transparent material so that the inner space 111 of the enclosure 110 can be observed.

However, it is preferable that the housing 110 is made of a translucent material so that light inside the housing 110 does not leak to the outside, or a material that can be observed with the naked eye but has transparency enough to prevent light from leaking.

The molded object cradle 130 is a cradle capable of floating and supporting the molded object 1a in the center of the inner space 111 .

In addition, the molded object holder 130 is installed in the horizontal direction at the center of the inner space 111, spaced side by side in the front-back direction, so that when the molded object 1a is placed, the molded object 1a A plurality of mounting rods 131 capable of supporting and a hanging stand 132 attached to both inner sides of the housing 110 and having grooves 132a capable of hanging the ends of the mounting rods 131 composed of

In addition, a plurality of grooves 132a spaced apart from each other in the front-back direction are formed in each of the holders 132, and the spacing of the mounting rods 131 is adjusted according to the size of the molded body 1a, and the size is hung in the grooves. made it possible to easily mount different molded bodies (1a).

In addition, the mounting rods 131 are preferably made of a transparent material so that the light emitted from the lower light source 140, which will be described below, is transmitted to the lower surface of the molded body 1a.

For example, the mounting rods 131 may be made of quartz or borosilicate glass.

The lower light source 140 irradiates light for photopolymerization from the lower part of the inner space 111 to the lower surface of the molded body 1a.

In addition, the lower light source 140 is a board mount 141 fastened to the lower surface of the LED substrate 142 (hereinafter referred to as 'lower LED substrate') on which a plurality of LED modules are mounted and the lower LED substrate 142, Hereinafter, referred to as 'lower substrate mount') and the lower substrate mount 141 are fastened to the inner lower surface of the enclosure 110, and include a fastening rod 143 for fastening so as to be movable up and down. .

That is, the lower light source 140 can move up and down and adjust the intensity and range of light irradiated to the lower surface of the molded body 1a.

In addition, the lower LED modules are composed of a total of 25 LED modules connected in 5 series and 5 parallel, irradiate light of a wavelength range of 420 to 490 nm (peak wavelength 460 nm), and can generate a maximum output of 2,000 to 4,000 mW / cm 2 . However, the lower LED modules may be composed of 20 to 40 LED modules.

In addition, a heat sink is provided on the lower surface of the lower substrate mount 141 to immediately discharge heat from the lower LED modules. A fan may be further provided.

In addition, a temperature control module capable of adjusting the temperature of the inner space 111 from 0 ° C to 120 ° C may be provided inside the enclosure 110 .

That is, the photopolymerizer 100 of the present invention can be used not only for photopolymerization but also for thermal polymerization.

The upper light source 150 is provided above the inner space 111 and irradiates light for photopolymerization to the upper surface of the molded body 1a.

In addition, the upper light source 150 includes an LED substrate 151 (hereinafter, referred to as 'upper LED substrate') and a substrate mount 152 (hereinafter referred to as 'upper substrate mount') supporting the upper LED substrate 131. ), the lower end passes through the upper surface of the enclosure 110 and is attached to the upper board mount 152, and the upper end is exposed to the upper part of the enclosure 110 and moves up and down, and the upper board mount A support rod 153 capable of moving the 152 up and down and detachably fastened to the support rod 153 from the outside of the enclosure 110, and in contact with the upper surface of the enclosure 110, the support rod 153 It includes a clamp 154 for fixing so as not to fall into the inner space 111.

That is, the user can adjust the position of the upper board mount 152 by gripping the upper end of the support rod 153, adjusting the position up and down, and then fixing it with the clamp 154.

In addition, the upper LED substrate 151 and the upper substrate mount 152 are substantially the same as the lower LED substrate 142 and the lower substrate mount 141, respectively.

In addition, the upper light source 150 is spaced side by side on the left and right sides of the support bar 153 so that the lower end passes through the upper surface of the enclosure 110 and is fixed to the upper substrate mount 152, and the upper end is the enclosure ( 110) may further include a guide rod 155 exposed to the top.

That is, the guide rod 155 can prevent the upper board rod 152 from shaking left and right when the support rod 153 moves up and down.

In addition, outside the enclosure 110, a power supply module 112 receiving external power and supplying it to the upper LED substrate 151 and the lower LED substrate 142 and the upper power supply module 112 A control module 123 for adjusting the intensity and time of power supplied to the LED substrate 151 and the lower LED substrate 142 may be further provided.

That is, the user can optimally adjust the light intensity and light irradiation time according to the type and size of the molded body 1a.

As described above, the present invention has been shown and described with preferred embodiments, but is not limited to the above embodiments, and to those skilled in the art within the scope of not departing from the spirit of the present invention Various changes and modifications will be possible.

100: photopolymerizer 110: enclosure
111: internal space 112: power supply module
113: control module 120: door
130: molded object holder 131: holder
132: hanger 132a: home
140: lower light source 141: lower board mount
142: lower LED substrate 143: mounting rod
150: upper light source 151: upper LED substrate
152: upper board mount 153: support bar
154: clamp 155: guide rod

Claims (8)

An enclosure with an open front and an internal space;
a door hinged on the front surface of the enclosure to open and close the inner space;
A molded object holder capable of placing a molded object for light polymerization in the center of the inner space;
a lower light source for irradiating light for photopolymerization from a lower portion of the inner space to a lower surface of the molded body; and
An upper light source for irradiating light for photopolymerization from the upper part of the inner space to the upper surface of the molded body; includes,
The lower light source or the upper light source can move up and down toward the mounting rod and adjust the intensity and range of light irradiated to the molded body,
The upper light source: silver,
LED substrate;
a board mount on which the LED board is mounted;
a support bar having a lower end passing through the upper surface of the housing and attached to the substrate mounting table, and an upper end exposed to the upper portion of the housing body and moving up and down to move the substrate mounting table up and down; and
A clamp that is fastened to the support rod from the outside of the enclosure and contacts the upper surface of the enclosure to fix the support rod so that it does not fall into the inner space of the enclosure,
A photopolymerizer for producing a dental hybrid composite resin block by photopolymerizing the molded body.
According to claim 1,
The molded body holder:
Doedoe installed in the center of the inner space in the horizontal direction, spaced side by side in the front and rear directions and installed in plural pieces, the mounting rod capable of placing the molded body on top; and
Including; a hanger attached to both inner sides of the enclosure and having a groove through which the end of the rod can be hung;
A photopolymerizer, characterized in that a plurality of grooves spaced apart from each other in the front and rear directions are formed on each of the hangers, and the distance between the mounting rods is adjusted according to the size of the molded body so that it can be hung in the grooves.
According to claim 2,
The light polymerizer, characterized in that the mounting rod is made of transparent quartz or borosilicate glass so that the light irradiated from the lower light source is transmitted to the lower surface of the molded body.
delete delete According to claim 1,
The upper light source: silver,
Further comprising a guide rod spaced parallel to the support rod and having a lower end penetrating the upper surface of the enclosure and attached to the substrate mount,
The photopolymerizer, characterized in that the guide rod prevents shaking when the mount moves up and down.
According to claim 6,
The enclosure is provided with a power supply module for receiving external power and supplying it to the upper light source and the lower light source, and a control module for adjusting the intensity and time of power supplied from the power supply module to the upper light source and the lower light source. Photopolymerizer, characterized in that.
According to claim 7,
The photopolymerizer, characterized in that the enclosure is provided with a fan for cooling the inner space and a temperature control module capable of adjusting the temperature of the inner space from 0 ° C to 120 ° C.

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