Integrated block-type dental medical device for manufacturing artificial tooth and denture and manufacturing method therefor

Abstract

The present invention relates to an integrated block-type dental medical device for manufacturing an artificial tooth and a denture and a manufacturing method therefor and, more specifically, to a dental medical device capable of integrated manufacturing an artificial tooth and a denture and a manufacturing method therefor, by which an artificial tooth and a denture can be easily and conveniently manufactured through CAD / CAM by using materials having excellent physical properties for an artificial tooth and a denture.

Description

An integrated block-type dental medical device for manufacturing artificial teeth and dentures and a manufacturing method thereof

[0001] The present invention relates to an integrated block-type dental medical device for manufacturing artificial teeth and dentures and a manufacturing method thereof, and more particularly, to a dental medical device capable of manufacturing an integrated CAD / CAM artificial teeth and dentures using an artificial teeth material and a denture material having excellent physical properties, and a manufacturing method thereof.

[0002] Unless otherwise indicated herein, the materials described in this section are not prior art to the claims of this application, and their inclusion in this section is not intended to be admitted as prior art.

[0003] The dental biomaterials market has an average annual growth rate of 6.57%, and the dental 3D printing market has an average annual growth rate of 25.8%, showing remarkable growth in the dental market due to improved living standards and extended life expectancy.

[0004] Conventional denture base resins (dentures) and crown resins (artificial teeth) are made by mixing acrylic polymers such as polymethyl methacrylate and polyethyl acrylate, monomers such as methyl methacrylate, ethacrylate, and butyl acrylate, and crosslinking agents, catalysts, initiators, etc.

[0005] However, since the physical properties of dental medical devices products made by mixing polymer materials and monomers are generally low, there is a need to improve the physical properties.

[0006] Among dental materials, prior art technologies regarding impact modifiers mainly used in dentures include an acrylic impact modifier disclosed in Korean Patent No. 10-2168346, and an impact modifier for methacrylic resin with excellent impact strength and optical properties disclosed in Korean Patent No. 10-1497756. However, since the above prior art technologies are resin compositions that mix polymer materials and monomers, they have low physical properties, and therefore, there is a need to improve the physical properties.

[0007] Additionally, artificial teeth include metal crowns made of metal such as gold, porcelain fused metal (PFM) made by varnishing porcelain on the surface of a metal frame, zirconia made by cutting zirconium oxide ore, or artificial teeth made of resin.

[0008] However, metal crowns are not only unsightly, but also have the problem of increased manufacturing costs due to the rise in the price of gold in the case of crowns made of gold. In addition, PFMs containing porcelain have the problem of the porcelain separating or cracking due to occlusal pressure because the tensile strength of porcelain is lower than that of natural teeth. In addition, zirconia artificial teeth have the problem of the normal teeth that occlude with the transplanted artificial teeth cracking or breaking due to occlusal pressure because the tensile strength of zirconium oxide is higher than that of natural teeth.

[0009] Since artificial teeth are used in the human oral cavity, where various environmental changes occur, such as temperature, acidity, and masticatory pressure, they must be free from corrosion and discoloration and not harmful to the human body. Since they are subjected to masticatory pressure while chewing food, they must be able to withstand this pressure and not wear or deform. Furthermore, since they collide with other teeth during the chewing process, they should exhibit properties similar to the hardness and strength of teeth to prevent excessive impact.

[0010] However, in the case of conventional artificial teeth, as described above, the mechanical properties are excessively strong compared to natural teeth, which not only causes damage to normal teeth, but also has the problem of being aesthetically unnatural because the transparency of natural teeth is not secured.

[0011] Meanwhile, in addition to improving the properties of dentures or artificial teeth, these existing dental materials are also technologies for manufacturing artificial teeth and dentures at the same time. Recently, Korean Patent Registration No. 10-2127542 and Korean Patent Publication No. 10-2023-0023588 disclose technologies for dental blanks having upper and lower surfaces and composed of a skin-colored material and a tooth-colored material, such as dental blanks in which the skin-colored material and the tooth-colored material are bonded together. Similarly, Korean Patent Publication No. 10-2023-0024219 also proposes a block composed of a skin-colored material and a tooth-colored material, the skin-colored material and the tooth-colored material having upper and lower surfaces connected to each other.

[0012] However, although these new types of dental blanks have a more advanced configuration than existing ones, they do not have excellent physical properties such as flexural strength, flexural modulus, and hardness, and their use is limited due to their low physical characteristics.

[0013] (Prior art literature)

[0014] (Patent Document)

[0015] (Patent Document 0001) Korean Patent Registration No. 10-2168346

[0016] (Patent Document 0002) Korean Patent Registration No. 10-1497756

[0017] (Patent Document 0003) Korean Patent Registration No. 10-2127542

[0018] (Patent Document 0004) Korean Patent Publication No. 10-2023-0023588

[0019] (Patent Document 0005) Korean Patent Publication No. 10-2023-0024219

[0020] The present invention is intended to solve the problems of the prior art as described above, and has as its object the provision of a dental material that enables easy manufacture of artificial teeth and dentures having excellent physical properties.

[0021] Accordingly, the purpose of the present invention is to provide an integrated block-type dental medical device that can be easily manufactured using CAD / CAM using artificial teeth and denture materials having excellent physical properties.

[0022] In addition, the present invention provides a method for manufacturing the dental medical device as described above.

[0023] The purpose of the present invention is not limited to the above-mentioned purpose, and should be understood to include all purposes that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims, or all purposes that can be achieved by the description or technical idea of ​​the present invention.

[0024] In order to achieve the above-described purpose of the present invention, the present invention provides an integrated block-type dental medical device for manufacturing artificial teeth and dentures, in which an artificial tooth material and a denture base material are joined to each other on the upper and lower surfaces to form an integrated structure.

[0025] The artificial tooth base material for the artificial tooth comprises a high-strength bead made of a composition including 100 parts by weight of acrylic monomer, 40 to 100 parts by weight of inorganic filler, 15 to 25 parts by weight of dispersant, 2 to 4 parts by weight of dispersant aid, and 0.1 to 1 part by weight of initiator, and an acrylic oligomer and an acrylic monomer.

[0026] The above-mentioned denture base material comprises a core layer copolymerized with an alkyl acrylate monomer having 2 to 18 carbon atoms or an alkyl methacrylate monomer having 2 to 18 carbon atoms, and a crosslinking monomer; a rubber layer positioned on the core layer and copolymerized with an acrylate monomer and a crosslinking monomer; and an outer layer positioned on the rubber layer and copolymerized with a methacrylate monomer and a crosslinking monomer; and an integrated block-type dental medical device for manufacturing artificial teeth and dentures, characterized in that it comprises micro-sized particles, and an acrylic oligomer and an acrylic monomer.

[0027] According to a preferred embodiment of the present invention, the inorganic filler of the artificial tooth base may be at least one selected from the group consisting of amorphous synthetic silica, crystalline natural silica, silicate, barium silicate, alumina, lithium silicate, and nano zirconia.

[0028] According to a preferred embodiment of the present invention, the dispersant of the artificial tooth base may be composed of an aqueous polyethylene oxide solution having a mass concentration of 4 to 6%.

[0029] According to a preferred embodiment of the present invention, the artificial tooth base may include 100 parts by weight of high-strength beads, 35 to 45 parts by weight of acrylic oligomer, and 5 to 15 parts by weight of acrylic monomer.

[0030] According to a preferred embodiment of the present invention, in the micro-sized particles of the denture base material, the core layer may be copolymerized with 1 to 10 parts by weight of the crosslinking monomer relative to 100 parts by weight of the alkyl acrylate monomer having 2 to 18 carbon atoms or the alkyl methacrylate monomer having 2 to 18 carbon atoms, the rubber layer may be copolymerized with 0.1 to 5 parts by weight of the crosslinking monomer relative to 100 parts by weight of the acrylate monomer, and the outer layer may be copolymerized with 0.1 to 5 parts by weight of the crosslinking monomer relative to 100 parts by weight of the methacrylate monomer.

[0031] According to a preferred embodiment of the present invention, the micro-sized particles of the denture base material may have a size of 1 to 150 μm.

[0032] According to a preferred embodiment of the present invention, the acrylic oligomer may be at least one selected from the group consisting of bisphenol A glycidyl methacrylate, 2,2-bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)propane, urethane dimethacrylate, biphenyl dimethacrylate, glycerol phosphate dimethacrylate, and tetraethylene glycol dimethacrylate.

[0033] According to a preferred embodiment of the present invention, the acrylic monomer may be at least one selected from the group consisting of methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, butylacrylate, butyl methacrylate, hydroxyethyl methacrylate, acrylic acid, methacrylic acid, triethylene glycol dimethacrylate, hexanediol diacrylate, hexanediol dimethacrylate, diethylene glycol diacrylate, diethylene glycol dimethacrylate, dipropylene glycol diacrylate, and dipropylene glycol dimethacrylate.

[0034] In addition, the present invention provides a method for manufacturing a denture base, comprising mixing and stirring a material for manufacturing a denture base, comprising: a core layer in which an alkyl acrylate monomer having 2 to 18 carbon atoms or an alkyl methacrylate monomer having 2 to 18 carbon atoms and a crosslinking monomer are copolymerized; a rubber layer positioned on the core layer in which the acrylate monomer and the crosslinking monomer are copolymerized; and an outer layer positioned on the rubber layer in which the methacrylate monomer and the crosslinking monomer are copolymerized; 100 to 200 parts by weight of micro-sized particles; 100 to 150 parts by weight of an acrylic oligomer and 5 to 50 parts by weight of an acrylic monomer; 0.1 to 3 parts by weight of a polymerization initiator; and 0.01 to 0.5 parts by weight of a pink pigment; and injecting the mixture into a mold, and then polymerizing the mixture under conditions of preferably 1 to 7 bar and 80 to 100°C to manufacture a denture base;

[0035] A step of mixing and stirring 100 to 200 parts by weight of high-strength beads made of a composition comprising 100 parts by weight of acrylic monomer, 40 to 100 parts by weight of inorganic filler, 15 to 25 parts by weight of dispersant, 2 to 4 parts by weight of dispersant aid, and 0.1 to 1 part by weight of initiator, and a material for artificial teeth comprising 100 to 150 parts by weight of acrylic oligomer and 5 to 50 parts by weight of acrylic monomer, and then injecting the mixture into a mold and polymerizing it under conditions of preferably 1 to 7 bar and 80 to 100°C to manufacture an artificial tooth base,

[0036] A step of laminating the artificial tooth base on the above denture base, then annealing it using a pressurized vessel at 100 to 160°C and 1 to 10 bar, and then cooling it to room temperature;

[0037] A step of cutting the above cooled material into block units.

[0038] A method for manufacturing an integrated block-type dental medical device for manufacturing artificial teeth and dentures is provided.

[0039] The present invention is manufactured as an integrated block-type dental medical device material using an artificial tooth material including high-strength beads of a specific configuration as described above and a denture base material including micro particles of a specific configuration, thereby providing a denture having an artificial tooth that is very natural and has excellent physical properties using such a block.

[0040] In addition, since the dental medical device of the present invention is manufactured with an artificial tooth material and a denture base material as an integrated block, it has the effect of easily manufacturing the artificial tooth and the denture in a very natural shape when manufacturing the denture.

[0041] In particular, when dentures are manufactured using the dental medical device according to the present invention, there is an advantage in that the dentures can be used hygienically and effectively for a long period of time.

[0042] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0043] Figures 1a and 1b are conceptual diagrams of the basic material composition of an integrated block-type dental medical device for manufacturing artificial teeth and dentures according to the present invention.

[0044] Figure 1a is an example photo of an artificial tooth base (left) and a denture base (right).

[0045] Figure 1b is a photograph of an example of a dental medical device in the form of an integrated block of the final product after annealing by combining an artificial tooth base and a denture base.

[0046] Hereinafter, with reference to the attached drawings, a dental medical device of the integrated block type for manufacturing artificial teeth and dentures according to a preferred embodiment will be described in detail.

[0047] The present invention provides an integrated block-type dental medical device for manufacturing artificial teeth and dentures, in which an artificial tooth base and a denture base material are joined to each other on the upper and lower surfaces to form an integrated unit.

[0048] In the present invention, the artificial tooth material forming the artificial tooth base is characterized by including a high-strength bead containing an inorganic filler.

[0049] According to a preferred embodiment of the present invention, the material for artificial teeth includes a high-strength bead made of a composition including 100 parts by weight of acrylic monomer, 40 to 100 parts by weight of inorganic filler, 15 to 25 parts by weight of dispersant, 2 to 4 parts by weight of dispersant aid, and 0.1 to 1 part by weight of initiator.

[0050] The artificial tooth material of the present invention can preferably be formed into an artificial tooth material with excellent physical properties through suspension polymerization together with an acrylic oligomer and an acrylic monomer.

[0051] According to a preferred embodiment of the present invention, the inorganic filler contained in the high-strength bead microparticles of the artificial tooth material may be at least one selected from the group consisting of amorphous synthetic silica, crystalline natural silica, silicate, barium silicate, alumina, lithium silicate, and zirconia. More preferably, nano-zirconia may be used.

[0052] According to a preferred embodiment of the present invention, the dispersant used in the manufacture of the high-strength beads of the artificial tooth material may preferably be an aqueous polyethylene oxide solution having a mass concentration of 4 to 6%.

[0053] According to a preferred embodiment of the present invention, the material for artificial teeth may include, for example, 100 parts by weight of the high-strength beads as described above, 35 to 45 parts by weight of acrylic oligomer, and 5 to 15 parts by weight of acrylic monomer.

[0054] Meanwhile, in the present invention, a denture base material may be applied together with the artificial tooth material in other areas. The artificial tooth material and the denture base material may be manufactured as a block type integrated in a laminated form, as illustrated in Fig. 1, for example.

[0055] The denture base material used in the present invention is preferably characterized by being a material having excellent impact resistance, including an impact modifier having specific properties.

[0056] According to a preferred embodiment of the present invention, such an impact modifier may be formed of microparticles having a triple structure, for example, comprising a core layer, a rubber layer surrounding the core layer, and an outermost outer layer disposed on the rubber layer.

[0057] According to a preferred embodiment of the present invention, the denture base material may have a core layer in the form of a copolymerization of an alkyl acrylate monomer having 2 to 18 carbon atoms or an alkyl methacrylate monomer having 2 to 18 carbon atoms, and a crosslinking monomer.

[0058] According to a preferred embodiment of the present invention, the rubber layer is positioned on the core layer, and the rubber layer may be formed in a form in which an acrylate monomer and a crosslinking monomer are copolymerized.

[0059] According to a preferred embodiment of the present invention, the outer layer forming the outermost shell of the microparticles is positioned on the rubber layer, and the outer layer can be formed in a form in which a methacrylate monomer and a crosslinking monomer are copolymerized.

[0060] According to a preferred embodiment of the present invention, the core layer in the micro-sized particles of the denture base material may be formed by copolymerizing, for example, 1 to 10 parts by weight of the crosslinking monomer with respect to 100 parts by weight of the alkyl acrylate monomer having 2 to 18 carbon atoms or the alkyl methacrylate monomer having 2 to 18 carbon atoms.

[0061] In addition, according to a preferred embodiment of the present invention, the rubber layer may be formed by copolymerizing 0.1 to 5 parts by weight of the crosslinking monomer with respect to 100 parts by weight of the acrylate monomer.

[0062] And, the outer layer may be formed by copolymerizing 0.1 to 5 parts by weight of the crosslinking monomer with respect to 100 parts by weight of the methacrylate monomer.

[0063] In this way, the denture base material of the present invention can include micro-sized particles having excellent physical properties as configured above as an impact modifier, and thus can exhibit properties such as impact resistance that are much better than those of the conventional material.

[0064] According to a preferred embodiment of the present invention, the micro-sized particles contained in the denture base material may have a size of 1 to 150 μm.

[0065] According to a preferred embodiment of the present invention, the denture base material includes the microparticles and can be manufactured by including an acrylic oligomer and an acrylic monomer therein.

[0066] The dental medical device of the present invention, which is an integrated block type for manufacturing artificial teeth and dentures, is characterized in that the artificial teeth material and the denture base material are integrated in a laminated form to form a block type.

[0067] Figures 1a and 1b are photographs showing a conceptual diagram of the basic material composition of an integrated block-type dental medical device for manufacturing artificial teeth and dentures according to the present invention having the above-described configuration.

[0068] Figure 1a is an example photograph of an artificial tooth base (left) and a denture base (right).

[0069] In addition, Fig. 1b shows an example photo of a dental medical device in the form of an integrated block of the final product after combining an artificial tooth base and a denture base manufactured as in Fig. 1a and annealing them together.

[0070] Meanwhile, the acrylic oligomer and acrylic monomer used in the artificial tooth material or denture material may be different or identical. More preferably, compatibility may be better when the same oligomer and acrylic monomer are used.

[0071] According to a preferred embodiment of the present invention, the acrylic oligomer used in the material in the present invention may be at least one selected from the group consisting of bisphenol A glycidyl methacrylate, 2,2-bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)propane, urethane dimethacrylate, biphenyl dimethacrylate, glycerol phosphate dimethacrylate, and tetraethylene glycol dimethacrylate.

[0072] According to a preferred embodiment of the present invention, the acrylic monomer may be at least one selected from the group consisting of methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, butylacrylate, butyl methacrylate, hydroxyethyl methacrylate, acrylic acid, methacrylic acid, triethylene glycol dimethacrylate, hexanediol diacrylate, hexanediol dimethacrylate, diethylene glycol diacrylate, diethylene glycol dimethacrylate, dipropylene glycol diacrylate, and dipropylene glycol dimethacrylate.

[0073] The dental medical device of the blow type according to the present invention can be used as a basic material for manufacturing dentures in which the artificial teeth and the denture body, which is the denture material, are integrated as a single block in itself.

[0074] Meanwhile, a method for manufacturing an integrated block-type dental medical device according to the present invention is described as follows.

[0075] First, in order to form a denture base material that is the basis of the denture, micro-sized particles having a core layer copolymerized with an alkyl acrylate monomer having 2 to 18 carbon atoms or an alkyl methacrylate monomer having 2 to 18 carbon atoms and a crosslinking monomer; a rubber layer positioned on the core layer and copolymerized with an acrylate monomer and a crosslinking monomer; and an outer layer positioned on the rubber layer and copolymerized with a methacrylate monomer and a crosslinking monomer are manufactured.

[0076] A denture base manufacturing material including 100 to 200 parts by weight of these micro material particles, 100 to 150 parts by weight of an acrylic oligomer, 5 to 50 parts by weight of an acrylic monomer, 0.1 to 3 parts by weight of a polymerization initiator, and 0.01 to 0.5 parts by weight of a pink pigment is mixed and stirred, and then injected into a mold and polymerized under conditions of 1 to 7 bar and 80 to 100°C to manufacture a denture base.

[0077] Separately from manufacturing the denture base using denture material, the artificial tooth base is manufactured separately using artificial tooth material.

[0078] According to a preferred embodiment of the present invention, the artificial tooth base is manufactured into a high-strength bead using a composition comprising 100 parts by weight of an acrylic monomer, 40 to 100 parts by weight of an inorganic filler, 15 to 25 parts by weight of a dispersant, 2 to 4 parts by weight of a dispersing aid, and 0.1 to 1 part by weight of an initiator.

[0079] An artificial tooth base can be manufactured by mixing and stirring an artificial tooth material containing 100 to 200 parts by weight of the high-strength beads manufactured in this manner, 100 to 150 parts by weight of an acrylic oligomer, and 5 to 50 parts by weight of an acrylic monomer, and then injecting the mixture into a mold and polymerizing it under conditions of 1 to 7 bar and 80 to 100°C.

[0080] According to a preferred embodiment of the present invention, by laminating the artificial tooth base on the denture base, and then annealing it using a pressurized vessel at 100 to 160°C and 1 to 10 bar, preferably for 10 minutes to 3 hours, and then cooling it to room temperature, a specific molded product can be obtained as a dental medical device material.

[0081] According to a preferred embodiment of the present invention, when annealing is performed at high temperature and high pressure using a pressurized vessel, such as an autoclave, as described above, physical properties such as flexural strength and impact strength can be improved. However, if annealing is performed at excessively high pressure or high temperature, there is a risk of product deformation or quality defects.

[0082] According to a preferred embodiment of the present invention, the cooled material can be cut into block units to manufacture an integrated block-type dental medical device for manufacturing artificial teeth and dentures.

[0083] According to a preferred embodiment of the present invention, the manufactured block-type dental medical device can be preferably utilized in a digitalized dental medical device manufacturing method by introducing an oral scanner.

[0084] According to a preferred embodiment of the present invention, for example, the manufactured block is a CAD / CAM block, and by processing it through a milling processing device into a shape and size suitable for the human body structure and the tooth structure, a method of outputting the denture body and artificial teeth can be applied to manufacture the denture in a simple manner.

[0085] According to a preferred embodiment of the present invention, the dental medical device of the present invention has significantly superior physical properties such as flexural strength, flexural modulus, and hardness compared to existing products, and thus can be preferably used as a denture product.

[0086] In particular, the present invention manufactures CAD / CAM blocks using hybrid high-strength beads, which are high-functionality materials that have not been applied before, and micro particles, which are impact-resistant materials, thereby enabling the manufacture of high-quality dentures that are significantly superior to those of conventional methods.

[0087] In this way, the present invention can be manufactured by first polymerizing a denture base part, then polymerizing an artificial tooth base part, and then laminating them to manufacture an integrated block. At this time, the CAD / CAM block can be manufactured with a thickness of, for example, 10 mm to 40 mm.

[0088] In addition, the present invention preferably allows for the manufacture of a block-type dental medical device having excellent properties by annealing under conditions of a glass transition temperature (Tg) or higher and high pressure to improve the properties of the block.

[0089]

[0090] Hereinafter, the present invention will be described in detail based on examples, but the present invention is not limited to the examples.

[0091] <Example 1>

[0092] (1) Manufacturing of denture base

[0093] 150 g of high-strength polymethyl methacrylate particles containing nano-zirconia as an impact-resistant material, 75 g of methyl methacrylate, 25 g of 2-hexylethyl methacrylate, 10 g of ethylene glycol methacrylate, 0.25 g of benzoyl peroxide, 25 g of cellulose acetate, and 0.1 g of pink pigment were placed in a 2 L round flask equipped with a stirrer and stirred for 15 minutes to prepare a denture material composition.

[0094] The above-mentioned denture base material composition was placed in a mold of a certain design made of a material including glass, Teflon, and PET, and polymerization was performed at 80 to 100°C under 3 bar conditions to manufacture a denture base.

[0095] (2) Manufacturing of artificial tooth base

[0096] 150 g of polymethyl methacrylate particles containing ceramic filler, 75 g of methyl methacrylate, 10 g of ethylene glycol methacrylate, 0.25 g of benzoyl peroxide, and 0.1 g of artificial tooth color pigment were placed in a 2 L round flask equipped with a stirrer and stirred for 15 minutes to prepare a material composition for artificial teeth.

[0097] After the above artificial tooth material composition was placed in a mold of a certain design made of a material including glass, Teflon, and PET, polymerization was performed at 80 to 100°C under 3 bar conditions to manufacture an artificial tooth base.

[0098] (3) Annealing process

[0099] The artificial tooth base was laminated on the denture base in an autoclave, which is a pressurized vessel, and after annealing for 2 hours under conditions of 130°C and 4 bar, a laminated molded product was obtained by slowly naturally cooling to room temperature.

[0100] (4) CAD / CAM block manufacturing

[0101] The above molded product was manufactured into a block using a CNC lathe.

[0102] <Example 2>

[0103] The same procedure as in Example 1 was followed, but a block was manufactured by annealing for 2 hours at 1 bar and 130°C during the annealing process.

[0104] <Example 3>

[0105] The same procedure as in Example 1 was followed, but a block was manufactured by annealing for 2 hours at 10 bar and 130°C during the annealing process.

[0106] <Example 4>

[0107] The same procedure as in Example 1 was followed, but a block was manufactured by annealing for 2 hours at 4 bar and 150°C during the annealing process.

[0108] <Comparative Example 1>

[0109] A sample block for test analysis was manufactured in the same manner as in Example 1 above, but without an annealing process.

[0110] <Comparative Example 2>

[0111] The same procedure as in Example 1 was followed, but a block was manufactured by annealing for 2 hours at 4 bar and 80°C during the annealing process.

[0112] <Comparative Example 3>

[0113] The same procedure as in Example 1 was followed, but a block was manufactured by annealing for 2 hours at 4 bar and 160°C during the annealing process.

[0114] <Comparative Example 4>

[0115] The same procedure as in Example 1 was followed, but a block was manufactured by annealing for 2 hours at 12 bar and 130°C during the annealing process.

[0116] <Experimental Example>

[0117] Physical property tests were performed on samples of each block manufactured in the above examples and comparative examples.

[0118] The experiment was conducted by manufacturing samples for testing and analysis of artificial teeth and denture bases using CNC machining equipment, and the results are shown in the table below.

[0119] (1) Flexural strength test

[0120] The crown resin material was cut into specimens of 25 mm (L) X 2 mm (W) X 2 mm (T) according to the ISO 10477:2020 method, and the denture base resin material was cut into specimens of 25 mm (L) X 10 mm (W) X 2 mm (T) according to the ISO 20795 method, and measured using a Shimadzu AGS-X device.

[0121] (2) Impact strength test

[0122] Specimens measuring 25 mm (L) X 10 mm (W) X 3 mm (T) were manufactured according to the ISO 179 method, and the V-notched Charpy impact strength (kg cm / cm) was measured at room temperature.

[0123] (3) Measurement of water absorption and solubility

[0124] Circular specimens measuring 15 mm ± 1 (D) x 1 mm ± 0.1 (T) were manufactured and measured according to ISO 10477, 20795 methods.

[0125] (4) Visual inspection

[0126] Bubbles and deformations on the product surface were observed with the naked eye, and classified as good or bad depending on the degree.

[0127] Classification Flexural strength (Mpa) Impact strength (Notched Charpy) Visual inspection (shape) Water absorption and solubility Artificial tooth denture base Artificial tooth denture base Example 1 137 103 1.5 2 3.52 Good Not detected Example 2 12 19 8 1.4 5 3.31 Good Not detected Example 3 13 2 11 01.3 3.17 Good Not detected Example 4 12 0 9 3 1.4 13.15 Good Not detected Comparative example 1 8 0 7 5 1.2 2 42 Bad Not detected Comparative example 2 8 3 8 11.2 7 2.87 Good Not detected Comparative example 3 11 5 8 11.2 6 2.81 Bad Not detected Comparative example 4 11 7 8 01.2 4 2.65 Bad Not detected

[0128] As a result of the above experiment, it was confirmed that the block manufactured according to the example of the present invention exhibited superior physical properties compared to the comparative example.

[0129]

[0130] Although the preferred embodiments of the present invention have been described with reference to the attached drawings, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application. Therefore, the embodiments described above should be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the claims described below rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims

1. In an integrated block-type dental medical device for manufacturing artificial teeth and dentures, the artificial tooth base and the denture base are joined to each other on the upper and lower surfaces to form an integrated structure, The above artificial tooth base comprises a high-strength bead made of a composition comprising 100 parts by weight of an acrylic monomer, 40 to 100 parts by weight of an inorganic filler, 15 to 25 parts by weight of a dispersant, 2 to 4 parts by weight of a dispersing aid, and 0.1 to 1 part by weight of an initiator, and comprises an acrylic oligomer and an acrylic monomer. The above-mentioned denture base comprises a core layer in which an alkyl acrylate monomer having 2 to 18 carbon atoms or an alkyl methacrylate monomer having 2 to 18 carbon atoms and a crosslinking monomer are copolymerized; a rubber layer positioned on the core layer and in which the acrylate monomer and the crosslinking monomer are copolymerized; and an outer layer positioned on the rubber layer and in which the methacrylate monomer and the crosslinking monomer are copolymerized; and a dental medical device of an integral block type for manufacturing artificial teeth and dentures, characterized in that it comprises micro-sized particles, and an acrylic oligomer and an acrylic monomer.

2. An integrated block-type dental medical device for manufacturing artificial teeth and dentures, wherein the inorganic filler of the artificial tooth base according to claim 1 is at least one selected from the group consisting of amorphous synthetic silica, crystalline natural silica, silicate, barium silicate, alumina, lithium silicate, and nano zirconia.

3. An integrated block-type dental medical device for manufacturing artificial teeth and dentures, characterized in that in claim 1, the dispersant of the artificial tooth base is composed of an aqueous polyethylene oxide solution having a mass concentration of 4 to 6%.

4. An integrated block-type dental medical device for manufacturing artificial teeth and dentures, characterized in that in claim 1, the artificial tooth base comprises 100 parts by weight of high-strength beads, 35 to 45 parts by weight of acrylic oligomer, and 5 to 15 parts by weight of acrylic monomer.

5. In claim 1, the core layer of the micro-sized particles of the denture base is formed by copolymerizing 1 to 10 parts by weight of the crosslinking monomer with respect to 100 parts by weight of the alkyl acrylate monomer having 2 to 18 carbon atoms or the alkyl methacrylate monomer having 2 to 18 carbon atoms, the rubber layer is formed by copolymerizing 0.1 to 5 parts by weight of the crosslinking monomer with respect to 100 parts by weight of the acrylate monomer, and the outer layer is formed by copolymerizing 0.1 to 5 parts by weight of the crosslinking monomer with respect to 100 parts by weight of the methacrylate monomer. An integrated block-type dental medical device for manufacturing artificial teeth and dentures.

6. An integrated block-type dental medical device for manufacturing artificial teeth and dentures, characterized in that the micro-sized particles of the denture base according to claim 1 have a size of 1 to 150 μm.

7. An integrated block-type dental medical device for manufacturing artificial teeth and dentures, characterized in that in claim 1, the acrylic oligomer is at least one selected from the group consisting of bisphenol A glycidyl methacrylate, 2,2-bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)propane, urethane dimethacrylate, biphenyl dimethacrylate, glycerol phosphate dimethacrylate, and tetraethylene glycol dimethacrylate.

8. An integrated block-type dental medical device for manufacturing artificial teeth and dentures, characterized in that in claim 1, the acrylic monomer is at least one selected from the group consisting of methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, butylacrylate, butyl methacrylate, hydroxyethyl methacrylate, acrylic acid, methacrylic acid, triethylene glycol dimethacrylate, hexanediol diacrylate, hexanediol dimethacrylate, diethylene glycol diacrylate, diethylene glycol dimethacrylate, dipropylene glycol diacrylate, and dipropylene glycol dimethacrylate.

9. In manufacturing an integrated block-type dental medical device for manufacturing artificial teeth and dentures, in which the artificial tooth base and the denture base are joined to each other on the upper and lower surfaces to form an integrated structure, A step of mixing and stirring a material for manufacturing a denture base, which comprises: a core layer in which an alkyl acrylate monomer having 2 to 18 carbon atoms or an alkyl methacrylate monomer having 2 to 18 carbon atoms and a crosslinking monomer are copolymerized; a rubber layer positioned on the core layer in which the acrylate monomer and the crosslinking monomer are copolymerized; and an outer layer positioned on the rubber layer in which the methacrylate monomer and the crosslinking monomer are copolymerized; 100 to 200 parts by weight of micro-sized particles; 100 to 150 parts by weight of an acrylic oligomer, 5 to 50 parts by weight of an acrylic monomer, 0.1 to 3 parts by weight of a polymerization initiator, and 0.01 to 0.5 parts by weight of a pigment of a pigment color; and injecting the mixture into a mold and polymerizing it under conditions of 1 to 7 bar and 80 to 100°C to manufacture a denture base; A step of mixing and stirring 100 to 200 parts by weight of high-strength beads made of a composition comprising 100 parts by weight of an acrylic monomer, 40 to 100 parts by weight of an inorganic filler, 15 to 25 parts by weight of a dispersant, 2 to 4 parts by weight of a dispersing aid, and 0.1 to 1 part by weight of an initiator, and a material for an artificial tooth comprising 100 to 150 parts by weight of an acrylic oligomer and 5 to 50 parts by weight of an acrylic monomer, and then injecting the mixture into a mold and polymerizing it under conditions of 1 to 7 bar and 80 to 100°C to manufacture an artificial tooth base, A step of laminating the artificial tooth base on the above-mentioned denture base, annealing it under conditions of 100 to 160°C and 1 to 10 bar using a pressurized vessel, and then cooling it to room temperature; Step of cutting the above cooled material into block units A method for manufacturing an integral block-type dental medical device for manufacturing artificial teeth and dentures, comprising:

Images