Denture base resin and method for manufacturing denture base resin

Abstract

The present invention relates to a denture base resin and a method for manufacturing the denture base resin and, more specifically, to a denture base resin having improved antioxidant and antiviral functions and enhanced mechanical strength, and a method for manufacturing the denture base resin.

Description

Denture base resin and method for manufacturing the same

[0001] The present invention relates to a denture base resin and a method for manufacturing a denture base resin, and more specifically, to a denture base resin capable of improving antioxidant and antiviral functions and increasing mechanical strength, and a method for manufacturing the denture base resin.

[0002] A denture is a prosthesis used to restore missing teeth or surrounding tissue in the upper or lower jaw.

[0003] In addition, denture bases can restore the patient's chewing and pronunciation functions and improve facial aesthetics while preserving the patient's remaining oral tissues in a healthy state.

[0004] These denture bases are polymer materials made by polymerizing denture base resin.

[0005] In addition, since polymers can cause phenomena such as decomposition of polymer chains, reduction in mechanical strength, and color change when exposed to oxidative environments such as sunlight, heat, and air, improvement in the function to prevent oxidation of the denture base is necessary.

[0006] Additionally, denture bases are one of the dental materials with high satisfaction among elderly patients whose oral environment deteriorates due to weakened immunity.

[0007] However, since dentures are not human tissue, there is a problem that they can become a hiding place for various harmful bacteria and viruses if elderly patients neglect cleaning and maintenance due to their limited mobility.

[0008] These harmful bacteria and viruses can cause pneumonia, an infectious disease that causes inflammation of tissues, in elderly patients with weakened immune systems.

[0009] A British study found that the dentures of people with pneumonia had 20 times more bacteria associated with the disease than those of people without pneumonia.

[0010] Meanwhile, conventional denture bases had the disadvantage of taking a long time to manufacture because they were made by taking an impression of the patient's gum condition and the entire oral cavity and then modeling the gums and teeth of the upper and lower jaws.

[0011] Recently, to improve these problems, denture bases can be printed precisely and quickly using a 3D printer loaded with denture base resin.

[0012] However, the denture base resin for 3D printing is a mixture of bisphenol A-glycidyl methacrylate and urethane dimethacrylate, which have low polymerization shrinkage and low viscosity, and has good transparency and color, but has low viscosity, which causes the mechanical properties as a denture base to be poor.

[0013] Additionally, there are not many types of denture base resins for 3D printing currently on the market.

[0014] The present invention is designed to solve the above-described problems, and provides a denture base resin having an antioxidant function and a method for manufacturing the denture base resin.

[0015] In addition, an object of the present invention is to provide a denture base resin capable of manufacturing a denture base having an antiviral function and a method for manufacturing the denture base resin.

[0016] In addition, the purpose of the present invention is to provide a denture base resin capable of manufacturing a denture base with improved mechanical strength capable of withstanding the masticatory force and complex stress of a denture base in the oral cavity, and a method for manufacturing the denture base resin.

[0017] In addition, an object of the present invention is to provide a denture base printed with a 3D printer loaded with the denture base resin and a method for manufacturing the denture base.

[0018] In order to achieve the above object, the present invention provides a composition comprising: bisphenol A-glycidyl methacrylate, tri(ethylene glycol) dimethacrylate, bisphenol A-ethoxylated dimethacrylate, urethane dimethacrylate, butylated hydroxytoluene (BHT), phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-, ethyl 4-dimethylaminobenzoate, camphorquinone, silica, bismuth vanadium oxide A denture base resin containing vanadium oxide, iron(Ⅲ) oxide, titanium dioxide, and alpha tocopheryl acetate (α) is provided.

[0019] In a preferred embodiment, the denture base resin further comprises diphenyliodonium hexafluorophosphate.

[0020] In a preferred embodiment, the denture base resin comprises 35 to 38 wt% of the bisphenol A-glycidyl methacrylate, 17 to 18 wt% of the triethylene glycol dimethacrylate, 18 to 19 wt% of the bisphenol A-ethoxylated dimethacrylate, 22 to 23 wt% of the urethane dimethacrylate, 0.05 to 0.1 wt% of the diphenyliodonium hexafluorophosphate, 0.05 to 0.1 wt% of the butylated hydroxytoluene (BHT), and phenol, 0.05 to 0.1 wt% of 2-(2H-benzotriazol-2-yl)-4-methyl- (Phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-), 0.2 to 0.4 wt% of the ethyl 4-dimethylaminobenzoate, 0.7 to 1.0 wt% of the camphorquinone, 1.2 to 1.8 wt% of the silica, 0.01 to 0.02 wt% of the bismuth vanadium oxide, 0.01 to 0.02 wt% of the iron(III) oxide, 0.01 to 0.02 wt% of the titanium dioxide, and 0.01 to 0.02 wt% of the alpha tocopheryl acetate. Acetate, α) further contains 0.01 to 0.02 wt%.

[0021] In a preferred embodiment, the silica is further characterized as being silica having a diameter of 25 to 75 nm.

[0022] In a preferred embodiment, the silica is further characterized by including silica having a diameter of 25 to 75 nm and silica having a diameter of 0.5 to 50 μm in a ratio of 4:6.

[0023] In addition, as a method for manufacturing a denture base resin for manufacturing the denture base resin, a step of mixing the bisphenol A-glycidyl methacrylate, the tri(ethylene glycol) dimethacrylate, and the bisphenol A-ethoxylated dimethacrylate, and mixing a part of the urethane dimethacrylate to manufacture a first mixture, the diphenyliodonium hexafluorophosphate, the butylated hydroxytoluene (BHT), the phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-(Phenol, A step of preparing a second mixture by mixing 2-(2H-benzotriazol-2-yl)-4-methyl-), Ethyl 4-dimethylaminobenzoate, Camphorquinone, Silica, Tocopheryl Acetate (α), and some of the remainder of Urethane dimethacrylate, a step of preparing a third mixture by mixing the first mixture and the second mixture, and a step of preparing a fourth mixture by mixing the Bismuth vanadium oxide, the Iron(Ⅲ) oxide, the Titanium oxide, and the remainder of Urethane dimethacrylate in the third mixture, and the fourth mixture is used for the denture base. A method for manufacturing a denture base resin is provided, which includes a step of completing with resin.

[0024] In a preferred embodiment, the urethane dimethacrylate is further characterized in that it is evenly distributed and mixed in the first mixture, the second mixture, and the fourth mixture.

[0025] In a preferred embodiment, the first mixture is further prepared by stirring at a temperature of 27 to 32° C. and a humidity of 45 to 50% for 72 hours, and the fourth mixture is prepared by stirring at a speed of 500 to 2,500 rpm for 60 minutes.

[0026] In addition, a denture base manufactured using a denture base resin manufactured using the above-described method for manufacturing a denture base resin is further provided.

[0027] In addition, a denture base manufactured using the above denture base resin is further provided.

[0028] In a preferred embodiment, the invention further includes a feature that, when the denture base is used as a specimen for an antiviral test, the virus inoculated into the test area can be reduced by at least 99%.

[0029] In a preferred embodiment, the denture base further comprises a flexural strength of 103 to 110 MPa and a flexural modulus of 2,267 to 2,422.

[0030] In a preferred embodiment, the denture base is further characterized in that it is manufactured by 3D printing and curing the denture base resin.

[0031] In addition, a method for manufacturing a denture base is further provided, including a step of obtaining dental arch data of a patient, a step of obtaining three-dimensional denture base data from the dental arch data, and a step of manufacturing a denture base using a denture base resin or a denture base resin manufactured by the denture base resin manufacturing method in the shape of the three-dimensional denture base data using a 3D printer.

[0032] In a preferred embodiment, the step of acquiring the patient's jaw data includes acquiring the patient's jaw by photographing the patient's jaw or using previously acquired jaw data of the patient, and the step of acquiring the three-dimensional denture base data further includes the steps of inserting a tooth landmark for identifying an occlusal position of maxillary data and mandibular data among the jaw data, selecting a tooth arrangement having an arrangement suitable for the maxillary data and the mandibular data from a tooth arrangement library, creating a tooth insertion path by inserting teeth into positions where the tooth arrangement is inserted in the maxillary data and the mandibular data, and acquiring the patient's jaw data in which the tooth insertion path is created as the three-dimensional denture base data.

[0033] The present invention has the following effects.

[0034] First, there is an advantage in that a denture base can be manufactured using a denture resin containing tocopherol having an antioxidant function according to an embodiment of the present invention.

[0035] In addition, the denture base resin according to an embodiment of the present invention has the advantage of providing an antiviral denture base to a patient, thereby reducing the chance of viral infection due to the denture base.

[0036] In addition, the denture base resin according to the embodiment of the present invention has the advantage of providing a denture base with improved flexural strength and flexural coefficient, so that it can be used for a long period of time.

[0037] In addition, the method for manufacturing a denture base according to an embodiment of the present invention has the advantage of being able to easily manufacture a denture base using a 3D printer.

[0038] Figure 1 is a drawing showing a denture base resin according to an embodiment of the present invention;

[0039] Figure 2 is a drawing illustrating a method for manufacturing a denture base resin according to an embodiment of the present invention;

[0040] Figure 3 is a drawing showing a denture base according to an embodiment of the present invention;

[0041] FIG. 4 is a drawing for explaining a method for obtaining three-dimensional denture base data according to an embodiment of the present invention;

[0042] FIG. 5 is a drawing for explaining a method for obtaining data for 3D printing according to an embodiment of the present invention;

[0043] FIG. 6 is a drawing showing a denture base being printed by a 3D printer according to an embodiment of the present invention;

[0044] Figure 7 is a drawing showing the results of an antiviral test on a denture base according to an embodiment of the present invention.

[0045] <Explanation of symbols>

[0046] 10: Archery data

[0047] 11: Maxillary data

[0048] 12: Mandibular data

[0049] 13: Dental landmarks

[0050] 20: Tooth Array Library

[0051] 21: Tooth arrangement data

[0052] 30: Tooth insertion

[0053] 50: 3D denture base data

[0054] 60: Data for 3D printing

[0055] 70: 3D printer

[0056] 100: Denture base resin

[0057] 200: Denture base

[0058] 210: Maxillary denture base

[0059] 220: Mandibular denture base

[0060] a: Tooth bonding groove

[0061] b: supporter

[0062] The terms used in the present invention are selected from the most widely used general terms as much as possible, but in certain cases, there are terms arbitrarily selected by the applicant. In such cases, the meaning of the terms should be understood by considering the meaning described or used in the detailed description of the invention, rather than the simple name of the term.

[0063] Hereinafter, the technical configuration of the present invention will be described in detail with reference to preferred embodiments illustrated in the attached drawings.

[0064] However, the present invention is not limited to the embodiments described herein and may be embodied in other forms.

[0065] Identical reference numbers throughout the specification represent identical components.

[0066] The present invention relates to a denture base (200) having an antioxidant function, a denture base resin (100) for manufacturing the denture base (200), and a method for manufacturing the denture base resin.

[0067] In addition, a denture base (200) manufactured using the denture base resin (100) and a method for manufacturing the denture base are included.

[0068] First, FIG. 1 is a drawing showing a denture base resin (100) according to an embodiment of the present invention.

[0069] Referring to FIG. 1, the denture base resin (100) is a light-curing denture base resin that is made by mixing a liquid monomer, a diluent, an antioxidant, an ultraviolet stabilizer, a photopolymerization initiator, an inorganic filler, a pigment, and an antioxidant as raw materials for manufacturing the denture base (200) and hardening it by irradiating it with light.

[0070] The above monomer is a basic component of the denture base resin (100) having a shape similar to the patient's gums.

[0071] Monomers used in the denture base resin (100) according to the present invention include bisphenol A-glycidyl methacrylate, tri(ethylene glycol) dimethacrylate, and bisphenol A-ethoxylated dimethacrylate.

[0072] Meanwhile, the above monomers are methacrylate series compounds and have low viscosity.

[0073] Accordingly, the viscosity of the monomer is controlled by using urethane dimethacrylate, which has a relatively high viscosity, as a diluent.

[0074] The above antioxidant and the above UV stabilizer provide color stability and storage stability to the denture base resin (100).

[0075] Additionally, butylated hydroxytoluene (BHT) is used as the antioxidant.

[0076] In addition, the above butylated hydroxytoluene (BHT) is a phenol-based antioxidant that is used as an antioxidant for various purposes, but is mainly added as an antioxidant for thermoplastic plastics.

[0077] In addition, since the above denture base resin (100) is a polymer in which the above monomers are polymerized, it has the characteristic that its physical properties may be weakened or decomposed due to an oxidation reaction caused by free radicals generated by oxygen.

[0078] However, if the above-mentioned antioxidant is used, the free radicals can be stabilized, thereby preventing oxidation of the denture base resin (100).

[0079] In addition, phenol, 2-(2H-benzotriazol-2-yl)-4-methyl- is used as the UV stabilizer.

[0080] In addition, the above phenol, 2-(2H-benzotriazol-2-yl)-4-methyl- is a hydroxyphenol benzotriazole series ultraviolet absorbent that is effective in absorbing light in the wavelength range of 300 to 400 nm and is a substance that remains safe even when exposed to light for a long period of time, thereby preventing the above raw materials from being decomposed due to ultraviolet exposure.

[0081] Meanwhile, camphorquinone and ethyl 4-dimethylaminobenzoate are used together as a photopolymerization initiator to initiate the photopolymerization reaction of the above monomer.

[0082] At this time, the camphorquinone initiates polymerization of the monomers by free radicals formed by absorbing blue light.

[0083] In addition, the ethyl 4-dimethylaminobenzoate is an amine reducing agent, and the camphorquinone can initiate polymerization by collecting a hydrogen atom from the ethyl 4-dimethylaminobenzoate to generate a radical.

[0084] In addition, the denture base resin (100) according to one embodiment of the present invention includes an inorganic filler to improve the physical properties of the denture base.

[0085] In general, inorganic fillers control the ratio of monomers, and the monomers impart strength and hardness to the material cured by polymerization.

[0086] Therefore, a polymer containing an inorganic filler can have improved physical properties by increasing wear resistance and reducing polymerization shrinkage.

[0087] Typically, inorganic fillers used to strengthen the properties of dental composite resins include quartz, borosilicate glass, silica, or ceramic, but the denture base resin (100) according to one embodiment of the present invention uses silica.

[0088] Additionally, the silica helps prevent discoloration or staining by reducing the coefficient of thermal expansion and reducing water absorption.

[0089] Additionally, the silica used has a diameter of 25 to 75 nm.

[0090] According to one embodiment of the present invention, a denture base resin (100) uses silica having a diameter of 25 to 75 nm, and silica having a diameter of 50 nm.

[0091] Additionally, the silica can be used in different diameter sizes.

[0092] In a preferred embodiment, the silica may be used by mixing a plurality of silica particles having a diameter of 50 nm and silica particles having a diameter of 0.5 to 50 μm.

[0093] More specifically, the silica having a diameter of 0.5 to 50 μm uses silica having a diameter of 20 μm, and the silica having a diameter of 50 nm and the silica having a diameter of 20 μm are mixed and used in a ratio of 4:6.

[0094] This is to prevent color separation from occurring over time due to uneven dispersion of the silica and additives when using only the silica having a diameter of 50 nm.

[0095] The above pigments use bismuth vanadium oxide, iron(Ⅲ) oxide, and titanium dioxide.

[0096] Tocopherol, known as vitamin E, is used as the above antioxidant.

[0097] In addition, the above tocopherol acts on the cell membrane to inhibit active oxygen by preventing the propagation of free radicals, and thus has a function similar to that of the above antioxidant.

[0098] However, the above tocopherol is a substance that is safe for the human body to consume as a dietary supplement and has an anti-inflammatory effect, so it has the function of improving periodontal health and healing.

[0099] Additionally, the above tocopherol can interact with other antioxidants, so it can be used even in small amounts.

[0100] A denture base resin (100) according to one embodiment of the present invention uses alpha tocopheryl acetate (α) as the antioxidant.

[0101] Meanwhile, the denture base resin (100) according to one embodiment of the present invention may further include a fluorine compound having an antiviral function.

[0102] Additionally, diphenyliodonium hexafluorophosphate is used as the fluorine compound.

[0103] Table 1 shows the raw materials included in the denture base resin (100) and the amount of the raw materials.

[0104] The denture base resin (100) according to the present invention can be manufactured by mixing the above raw materials according to the amounts of each raw material shown in Table 1.

[0105] Serial number Raw material name or ingredient name Amount (weight %) 1 Bisphenol A-glycidyl methacrylate 35 to 38 2 Triethylene glycol dimethacrylate 17 to 183 Bisphenol A-ethoxylated dimethacrylate 18 to 194 Urethane dimethacrylate 22 to 235 Diphenyliodonium hexafluorophosphate 0.05 to 0.16 Butylated hydroxytoluene (BHT) 0.05 to 0.17 Phenol, 2-(2H-benzotriazol-2-yl)-4-methyl- 2-(2H-benzotriazol-2-yl)-4-methyl-) 0.05 to 0.18 Ethyl 4-dimethylaminobenzoate 0.2 to 0.49 Camphorquinone 0.7 to 1.0 10 Silica 1.2 to 1.8 11 Bismuth vanadium oxide 0.01 to 0.02 12 Iron(Ⅲ) oxide 0.01 to 0.02 13 Titanium dioxide 0.01 to 0.02 14 Alpha tocopheryl acetate (α) 0.01 to 0.02

[0106] Meanwhile, FIG. 2 illustrates a method for manufacturing a denture base resin (100) according to an embodiment of the present invention.

[0107] According to FIG. 2, the method for manufacturing the denture base resin (100) includes a step of manufacturing a first mixture (S1000), a step of manufacturing a second mixture (S2000), a step of manufacturing a third mixture (S3000), and a step of manufacturing a fourth mixture (S4000).

[0108] In addition, the method for manufacturing the denture base resin (100) allows the viscosity to be stably maintained by evenly distributing and mixing the urethane dimethacrylate into the first mixture, the second mixture, and the fourth mixture.

[0109] In order to manufacture a denture base resin (100) according to the present invention, first, a first mixture containing a mixture of the monomers and a diluent is manufactured (S1000).

[0110] More specifically, the first mixture is prepared by mixing 35 to 38 wt% of the bisphenol A-glycidyl methacrylate, 17 to 18 wt% of the tri(ethylene glycol) dimethacrylate, and 18 to 19 wt% of the bisphenol A-ethoxylated dimethacrylate, and mixing 7.2 to 7.7 wt% of the urethane dimethacrylate, and stirring at a temperature of 27 to 32°C and a humidity of 45 to 50% for 72 hours.

[0111] Next, a second mixture containing the fluorine compound, the antioxidant, the ultraviolet stabilizer, the photopolymerization initiator, the inorganic filler, the antioxidant, and the diluent is prepared.

[0112] More specifically, the second mixture comprises 0.05 to 0.1 wt% of the diphenyliodonium hexafluorophosphate, 0.05 to 0.1 wt% of the butylated hydroxytoluene (BHT), 0.05 to 0.1 wt% of the phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-, 0.2 to 0.4 wt% of the ethyl 4-dimethylaminobenzoate, 0.7 to 1.0 wt% of the camphorquinone, 1.2 to 1.8 wt% of the silica, and 0.05 to 0.1 wt% of the alpha It is prepared by mixing 0.01 to 0.02 wt% of tocopheryl acetate (α) and 7.2 to 7.7 wt% of urethane dimethacrylate. (S2000)

[0113] Next, the first mixture and the second mixture are mixed to produce a third mixture. (S3000)

[0114] Next, the denture base resin is manufactured by mixing the pigment and the diluent into the third mixture to manufacture a fourth mixture.

[0115] More specifically, the quaternary mixture is prepared by mixing 0.01 to 0.02 wt% of the bismuth vanadium oxide, 0.01 to 0.02 wt% of the iron (III) oxide, and 0.01 to 0.02 wt% of the titanium dioxide into the tertiary mixture, and mixing 7.2 to 7.7 wt% of the urethane dimethacrylate and stirring at a speed of 500 to 2,500 rpm for 60 minutes. (S4000)

[0116] Additionally, the above pigments can be added in a predetermined amount by adjusting the amount of the pigments according to the color of the patient's gums.

[0117] FIG. 3 is a drawing showing a denture base (200) according to an embodiment of the present invention. The present invention provides a denture base (200) manufactured using the denture base resin (100) and a method for manufacturing the denture base (200).

[0118] In addition, in the present invention, a denture base (200) in which the upper jaw denture base (210) and the lower jaw denture base (220) are provided together is provided as one embodiment of the present invention, but it also includes using a denture base in a specific area alone depending on the location where the patient's teeth and tissues are lost.

[0119] In addition, an arch-shaped tooth insertion groove (a) is formed in the lower direction of the upper denture base (210) and in the upper direction of the lower denture base (220) according to the number of teeth of the patient, and a structure is manufactured in which teeth can be inserted, and when the teeth are inserted into the tooth insertion groove (a), an oral structure that is aesthetically natural can be implemented.

[0120] As discussed above, the present invention has been illustrated and described with reference to examples, but is not limited to the above-described examples, and various changes and modifications may be made by a person having ordinary skill in the art to which the invention pertains within a scope that does not depart from the spirit of the present invention.

[0121] The terms used in the present invention are selected from the most widely used general terms as much as possible, but in certain cases, there are terms arbitrarily selected by the applicant. In such cases, the meaning of the terms should be understood by considering the meaning described or used in the detailed description of the invention, rather than the simple name of the term.

[0122] Hereinafter, the form for carrying out the invention relates to other embodiments of the present invention, and the technical configuration of the present invention is described in more detail with reference to the preferred embodiments illustrated in the attached drawings.

[0123] However, other embodiments of the present invention may be embodied in other forms without being limited to the embodiments described herein.

[0124] [Example 1] Method for manufacturing a denture base

[0125] According to one embodiment of the present invention, a denture base (200) is manufactured using a 3D printer (70). In order to print the denture base (200) using the 3D printer (70), it is necessary to obtain 3D denture base data (50) supplemented with a shape and size appropriate for the patient's oral cavity.

[0126] FIG. 4 is a drawing for explaining a method for obtaining 3D denture base data (50) according to an embodiment of the present invention. The method for obtaining the 3D denture base data (50) begins with first obtaining dental arch data (10) by photographing the patient's oral cavity (S100).

[0127] In addition, the above-mentioned dental arch data (10) can be obtained as maxillary data (11) and mandibular data (12) in which the maxilla and mandible of a patient are precisely photographed using an oral CT (Computed tomography) or oral scanner used by those skilled in the art related to the present invention.

[0128] In addition, the above-mentioned archery data (10) can utilize data that has been photographed in advance and stored in a computer.

[0129] Next, three-dimensional denture base data (50) is obtained from the above-mentioned arch data (10).

[0130] More specifically, acquisition of the three-dimensional denture base data (50) begins with inserting a tooth landmark (13) for identifying the occlusal position of the upper jaw data (11) and the lower jaw data (12) into the dental arch data (10). (S200)

[0131] Next, a tooth arrangement (21) having an arrangement suitable for the upper jaw data (11) and the lower jaw data (12) is selected from the tooth arrangement library (20). (S300)

[0132] At this time, the above-mentioned tooth arrangement library (20) is an artificial intelligence-based program that has a function to automatically arrange teeth through an algorithm that takes into account the patient's facial aesthetics.

[0133] Next, a tooth insertion path (30) is created by inserting a tooth into the position where the tooth arrangement (21) is inserted into the upper jaw data (11) and the lower jaw data (12) (S400).

[0134] Next, the patient's dental arch data (10) in which the above tooth insertion path (30) is created is acquired as the 3D denture base data (50). (S500)

[0135] Next, the above 3D denture base data (50) is converted so that a 3D printer (70) can recognize and print it, thereby obtaining data for 3D printing (60). (S600)

[0136] FIG. 5 is a drawing for explaining a method of obtaining data (60) for 3D printing according to one embodiment of the present invention, in which the data (60) for 3D printing is illustrated.

[0137] Referring to FIG. 5, the data (60) for 3D printing is connected to the upper or lower part of the denture base (200) and has a structure in which a supporter (b) is attached, which is provided with a plurality of thin supports at the end portion connected to the denture base (200) for easy removal.

[0138] In addition, the supporter (b) is used to preserve and remove the printed denture base (200) from the output unit of the 3D printer (70) when the denture base (200) is printed by the 3D printer (70) according to the 3D printing data (60), and when printing is completed, it is washed by soaking it in a solution containing alcohol together with the denture base (200) and then removed.

[0139] Next, the denture base (200) is printed using the 3D printer (70).

[0140] FIG. 6 is a drawing showing a photograph of a denture base (200) printed by a 3D printer (70) according to one embodiment of the present invention, in which the output unit of the 3D printer (70) is submerged to a predetermined depth in a tank containing the denture base resin (100) and printing begins, so that the output unit of the 3D printer (70) is submerged to a predetermined depth in a tank containing the denture base resin (100) and printing begins.

[0141] In addition, the 3D printer (70) prints the denture base (200) by curing a portion of the denture base resin (100) using a plurality of light sources provided on the lower surface of the output section where the denture base (200) is printed.

[0142] That is, when the 3D printing data (60) is sliced ​​into a plurality of planes formed by the x-axis and the y-axis, the light source that comes into contact with the area where the denture base (200) is expressed among the entire area of ​​the first slice of the 3D printing data (60) recognized by the 3D printer (70) is turned on for a predetermined period of time to harden the denture base resin (100), and the light source that comes into contact with the area where the denture base (200) is not expressed is turned off, so that the polymerization of the denture base resin (100) is stopped, and the next 3D printing data (60) slice is printed with the light source turned on or off in the above pattern.

[0143] At this time, as the printing proceeds to the next 3D printing data (60) slice, the output unit of the 3D printer (70) moves upward little by little and the denture base (200) is output.

[0144] In addition, the denture base (200) for which the printing is completed is manufactured as a denture base (200) suitable for the patient's oral structure by applying dental adhesive to the tooth insertion path (30) to bond the teeth and then evaluating the occlusion or confirming whether the tooth insertion path (30) included in the denture base (200) matches the tooth arrangement (21).

[0145] [Example 2] Antiviral test

[0146] In order to confirm the antiviral effect of a denture base resin according to one embodiment of the present invention and a denture base manufactured using the denture base resin, a test was conducted as follows with reference to the antiviral test method of the international standard ISO 21702 used for evaluating antimicrobial activity.

[0147] First, host cells are cultured at a predetermined concentration in a plate divided into control group wells and test group wells.

[0148] Next, prepare three denture base specimens (200) for testing and prepare a virus solution in which the virus to be treated is dissolved on the surface of the denture base (200).

[0149] In addition, the denture base (200) specimen used in the present invention uses a denture base (200) manufactured with a denture base resin (100) containing the fluorine compound, diphenyliodonium hexafluorophosphate.

[0150] Additionally, the above ISO 21702 antiviral test uses influenza A virus and feline calicivirus as the infecting viruses of the host cell.

[0151] Next, the above-mentioned denture base (200) specimen for the specimen is inoculated with the above-mentioned virus solution and stored at room temperature for 2 hours. Then, the above-mentioned denture base (200) specimen for the specimen is washed with a washing solution, and the washing solution is inoculated into the host cells cultured in the above-mentioned test group well.

[0152] Next, the host cells are cultured to determine whether the control group and the test group are infected with the virus and the concentration of the virus that infected the host cells.

[0153] At this time, the control group is tested in the same manner as the test group except that it does not come into contact with the denture base (200) specimen for the sample, so that the virus infection concentration when the virus does not come into contact with the denture base (200) specimen for the sample can be compared as a control group.

[0154] Figure 7 is a drawing showing the results of an antiviral test on a denture base (200) according to an embodiment of the present invention.

[0155] Referring to Fig. 7, the results of the antiviral test of the denture base (200) show that the virus concentration of the control group is 5.0×106PFU / mL, and the virus concentration of the test group is 3.3×104PFU / mL, so it can be confirmed that the virus concentration of the test group is reduced by 2.18 log compared to the virus concentration of the control group.

[0156] This indicates that when the surface of the denture base (200) is inoculated with the virus solution and treated for 2 hours, the virus is reduced by 99.33%, and it can be said that the denture base (200) manufactured by the present invention has an antiviral property of at least 99.0%.

[0157] [Example 3] Flexural strength and flexural modulus measurement test

[0158] Meanwhile, dental materials, including dentures, are subject to physical stress due to chewing when they enter the mouth.

[0159] This is because the mechanical properties differ depending on the type and content of raw materials used in manufacturing, so the size of the yield stress of each denture base is different and deformation may occur accordingly.

[0160] Accordingly, as an example of the present invention, the flexural strength and flexural modulus of a specimen manufactured from the denture base resin (100) were evaluated by conducting a flexural strength and flexural modulus measurement test as described below with reference to the international standard ISO 20795-1 for denture base polymers.

[0161] First, we begin by manufacturing five specimens using the above denture base resin (100).

[0162] At this time, the above specimens are made of 5 specimens A and B, which are made of a denture base resin (100) containing the diphenyliodonium hexafluorophosphate, but the silica having a diameter of 50 nm and the silica having a diameter of 20 μm in a ratio of 4:6, and the above specimens are made of 5 specimens B, which are made of a denture base resin (100) containing only the silica having a diameter of 50 nm.

[0163] In addition, the above-mentioned specimens are manufactured using the above-mentioned denture base resin (100) into specimens having a length of 64 mm, a width of 10±0.2 mm, and a thickness of 3.3±0.2 mm.

[0164] Next, the above specimens A and B are stored in distilled water at 37°C±1°C for 50±2 hours, and then the specimens are moved onto a three-point flexural strength jig and a load is applied at a cross-head speed of 5±1 mm / min until the specimens reach the yield point or break, thereby measuring the flexural strength and flexural modulus.

[0165] Additionally, the bending test device according to one embodiment of the present invention is Instron's Model 5569.

[0166] In addition, the judgment of the flexural test for the above specimens is judged by confirming that the flexural strength is 65 MPa or more and the flexural modulus is 2,000 MPa or more for at least 4 of the 5 specimens used in the test.

[0167] Table 2 shows the test results measuring the flexural strength and flexural modulus for the above specimen A.

[0168] Classification test results (unit: Mpa) S1 S2 S3 S4 S5 Flexural strength 107 103 108 105 110 Flexural coefficient 2,280 2,267 2,292 2,422 2,335

[0169] Referring to Table 2, it can be confirmed that the flexural strength of the above specimen A is 103 to 110 Mpa, the flexural modulus is 2,267 to 2,422 Mpa, and the flexural test judgment criteria of ISO 20795-1 are satisfied.

[0170] Meanwhile, Table 3 shows the test results measuring the flexural strength and flexural modulus for the above specimen B.

[0171] Referring to Table 3, it can be confirmed that the flexural strength of the above-mentioned specimen B is 77.3 to 86.0 Mpa, the flexural modulus is 2,017.3 to 2,103.1 Mpa, and the flexural test judgment criteria of ISO 20795-1 are satisfied.

[0172] Classification test results (unit: Mpa) S1 S2 S3 S4 S5 Flexural strength 83.886.077.382.883.6 Flexural coefficient 2,069.02,017.52,103.12,017.32,062.9

[0173] As a result, both the above-mentioned specimen A and the above-mentioned specimen B satisfy the flexural test judgment criteria of ISO20795-1, but it can be confirmed that the flexural strength and flexural modulus of specimen A manufactured with a denture base resin (100) containing silica having a diameter of 50 nm and silica having a diameter of 20 μm in a ratio of 4:6 are higher than those of specimen B manufactured with a denture base resin (100) containing only silica having a diameter of 50 nm.

[0174] As discussed above, the present invention has been illustrated and described with reference to examples, but is not limited to the above-described examples, and various changes and modifications may be made by a person having ordinary skill in the art to which the invention pertains within a scope that does not depart from the spirit of the present invention.

Claims

1. Bisphenol A-glycidyl methacrylate, Tri(ethylene glycol) dimethacrylate, Bisphenol A-ethoxylated dimethacrylate, Urethane dimethacrylate, Butylated hydroxytoluene (BHT), Phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-, Ethyl 4-dimethylaminobenzoate, Camphorquinone, Silica, Bismuth vanadium oxide, Denture base resin containing iron(Ⅲ) oxide, titanium dioxide, and alpha tocopheryl acetate (α).

2. In paragraph 1, The above denture base resin is a denture base resin further containing diphenyliodonium hexafluorophosphate.

3. In paragraph 2, The total weight of the denture base resin comprises 35 to 38 wt% of the bisphenol A-glycidyl methacrylate, 17 to 18 wt% of the triethylene glycol dimethacrylate, 18 to 19 wt% of the bisphenol A-ethoxylated dimethacrylate, 22 to 23 wt% of the urethane dimethacrylate, 0.05 to 0.1 wt% of the diphenyliodonium hexafluorophosphate, 0.05 to 0.1 wt% of the butylated hydroxytoluene (BHT), and the phenol. 0.05 to 0.1 wt% of 2-(2H-benzotriazol-2-yl)-4-methyl- (Phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-), 0.2 to 0.4 wt% of the ethyl 4-dimethylaminobenzoate, 0.7 to 1.0 wt% of the camphorquinone, 1.2 to 1.8 wt% of the silica, 0.01 to 0.02 wt% of the bismuth vanadium oxide, 0.01 to 0.02 wt% of the iron(III) oxide, 0.01 to 0.02 wt% of the titanium dioxide, and 0.01 to 0.02 wt% of the alpha tocopheryl acetate. A denture base resin containing 0.01 to 0.02 wt% of acetate, α.

4. In paragraph 3, A denture base resin characterized in that the above silica is silica having a diameter of 25 to 75 nm.

5. In paragraph 3, A denture base resin characterized in that the above silica comprises silica having a diameter of 25 to 75 nm and silica having a diameter of 0.5 to 50 μm in a ratio of 4:

6.

6. A method for manufacturing a denture base resin, which manufactures a denture base resin according to any one of the provisions of paragraphs 2 to 5, A step of mixing the above bisphenol A-glycidyl methacrylate, the above tri(ethylene glycol) dimethacrylate, and the above bisphenol A-ethoxylated dimethacrylate, and mixing in a portion of the above urethane dimethacrylate to prepare a first mixture; A step of preparing a second mixture by mixing some of the remaining parts of the above diphenyliodonium hexafluorophosphate, the above butylated hydroxytoluene (BHT), the above phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-, the above ethyl 4-dimethylaminobenzoate, the above camphorquinone, the above silica, the above α-tocopheryl acetate, and the above urethane dimethacrylate; A step of mixing the first mixture and the second mixture to produce a third mixture; and A method for manufacturing a denture base resin, comprising: a step of mixing the remainder of the bismuth vanadium oxide, the iron(Ⅲ) oxide, the titanium dioxide, and the urethane dimethacrylate into the third mixture to manufacture a fourth mixture, and completing the fourth mixture as the denture base resin.

7. In paragraph 6, A method for manufacturing a denture base resin, characterized in that the above urethane dimethacrylate is evenly distributed and mixed in the first mixture, the second mixture, and the fourth mixture.

8. In paragraph 6, The above first mixture is stirred for 72 hours at a temperature of 27 to 32°C and a humidity of 45 to 50%, A method for manufacturing a denture base resin, comprising manufacturing the fourth mixture by stirring at a speed of 500 to 2,500 rpm for 60 minutes.

9. A denture base manufactured using a denture base resin manufactured using the manufacturing method of the denture base resin of Article 6.

10. A denture base manufactured using the denture base resin of any one of clauses 1 to 5.

11. In paragraph 10, A denture base characterized in that, when the above denture base is used as a sample for an antiviral test, the virus inoculated into the test area can be reduced by at least 99%.

12. In paragraph 10, A denture base characterized in that the flexural strength of the denture base is 103 to 110 Mpa and the flexural coefficient is 2,267 to 2,422.

13. In paragraph 10, The above denture base is characterized in that it is manufactured by 3D printing and hardening the above denture base resin.

14. Step of acquiring patient's dental arch data; A step of obtaining three-dimensional denture base data from the above arch data; A method for manufacturing a denture base, comprising: a step of manufacturing a denture base resin according to the shape of the three-dimensional denture base data using a 3D printer using a denture base resin manufactured by any one of claims 1 to 5 or a denture base resin manufacturing method according to any one of claims 6 to 8; 15. In paragraph 14, The step of obtaining the patient's dental arch data is as follows: Including obtaining the patient's dental arch by photographing it or using the patient's dental arch data obtained in advance, The step of acquiring the above 3D denture base data is: A step of inserting a tooth landmark to identify the occlusal position of the maxillary data and the mandibular data among the above arch data; A step of selecting a tooth arrangement having an arrangement suitable for the upper jaw data and the lower jaw data from the tooth arrangement library; A step of creating a tooth insertion path by inserting teeth into the positions where the tooth arrangement is inserted in the upper jaw data and the lower jaw data; and A method for manufacturing a denture base, comprising: a step of acquiring the patient's dental arch data in which the above tooth insertion path is created as the three-dimensional denture base data;

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