Dental prosthesis having a structure similar to natural teeth and method for manufacturing the same

Abstract

The present invention relates to a dental prosthesis having a structure similar to a natural tooth and a method for manufacturing the same, and discloses a dental prosthesis which is a solidified product containing ceramic particles dispersed in a polymer matrix, and a method for manufacturing the same using a 3D printing method, the dental prosthesis comprising: a first solidified product layer having a content of ceramic particles of 70 to 90 wt%, and an average particle diameter of the ceramic particles of 100 to 1000 nm; and a second solidified product layer which is adjacent to an inner side of the first solidified product layer, has a content of ceramic particles of 40 to 60 wt%, and an average particle diameter of the ceramic particles of 10 to 500 µm. Thus, the dental prosthesis exhibits a structure similar to a natural tooth, i.e., exhibits a structure and physical properties similar to a natural tooth having a surface of enamel and an interior of dentin.

Description

Technical Field

[0001] This invention relates to an oral prosthesis formed from a cured material containing ceramic particles dispersed in a polymer matrix and a method for manufacturing the same, and more specifically, to an oral prosthesis having a structure similar to that of a natural tooth and a method for manufacturing the prosthesis using 3D printing technology. Background Technology

[0002] It can be argued that the dental industry is growing in tandem with the development of equipment and materials used in dentistry. For example, the dental industry has been driven by equipment such as heat-pressing or computer-aided design / computer-aided manufacturing (CAD / CAM), and materials such as glass ceramics and zirconia, which are suitable for use in this industry, have also seen development.

[0003] As a result of these changes, dental care has improved, for example, by increasing patients' aesthetic satisfaction and shortening dental treatment time through single-day restorations. However, due to the differences in physical properties between dental teeth and natural teeth, there may be wear and tear on adjacent or opposing teeth, as well as cracking when chewing food. This can lead to further problems such as secondary infections in the oral cavity.

[0004] To address this issue, extensive research has been conducted on the structure and properties of restorations that resemble natural teeth. The crown of a natural tooth is composed of enamel and dentin, which differ in their physical properties and structures. Enamel contains over 85% inorganic matter by volume and has a dense structure (see reference). Figure 1 In ivory, the ratio of inorganic to organic matter is almost similar, and it has a porous structure (see reference). Figure 2 Due to these differences in materials and structure, enamel and ivory also differ in their physical properties. For example, the elastic modulus of enamel is approximately 50 to 110 GPa, while that of ivory is approximately 20 GPa or less. Furthermore, the hardness of enamel is approximately 3 to 6 GPa, while that of ivory is approximately 0.5 to 1.5 GPa.

[0005] As mentioned above, many studies have been conducted in the past in order to develop materials with properties and structures most similar to natural teeth, and a variety of materials have been developed.

[0006] As an example, Korean Patent No. 10-2037401 discloses an artificial tooth material with a light transmittance at the level of enamel in natural teeth. Specifically, it describes a silicate glass based on SiO2, wherein the silicate glass composition is heat-treated at 300°C to 600°C for 1 minute to 2 hours. After the heat treatment, the visible light transmittance is 40% to 70%. The silicate glass composition contains: 3 to 5 wt% ZrO2 to improve wettability for bonding with zirconium oxide, 69 to 79 wt% SiO2 acting as a glass structure, 10 to 13 wt% Li2O, 3 to 7 wt% P2O5, 1 to 4 wt% Al2O3, 1.0 to 2.5 wt% K2O, 0.1 to 3 wt% MO (M = any one of Ca, Zn, and Mg), and 0.5 to 2.0 wt% colorant. It is also recorded that when this SiO2-based silicate glass is hot-pressed onto the periphery of zirconia, the zirconia restoration can be thermally bonded to its surface with almost no cutting, thereby maintaining the stability of the mechanical structure. Furthermore, since the color of zirconia seeps through the thin coating layer, an extremely vivid and rich color can be obtained, thus exhibiting optical properties more similar to natural teeth.

[0007] Furthermore, Korean Patent No. 10-1840142 discloses a method for fabricating artificial teeth using a light-cured dental resin composition. Specifically, it describes a method for easily and flexibly fabricating artificial teeth in a short time, particularly in less than one hour, using a light-cured dental resin composition comprising a free-radical polymerizable organic compound, a filler, and a photosensitive free-radical polymerization initiator. This artificial tooth possesses all the necessary properties for an artificial tooth, including strength, wear resistance, hardness, and low water absorption; furthermore, it also exhibits excellent aesthetics and functionality. In particular, it describes a fabrication method based on three-dimensional CAD data.

[0008] However, in reality, there is still a lack of restoration technology that has both enamel and dentin structures. Summary of the Invention

[0009] Technical issues

[0010] The present invention provides an oral prosthesis that can present a dual structure of enamel and dentin, exhibiting a structure and physical properties similar to natural teeth.

[0011] Furthermore, the present invention provides a method for manufacturing oral prostheses, which utilizes 3D printing to achieve a dense enamel structure similar to that of natural teeth and a porous structure of dentin, thereby possessing a dual structure and realizing various physical properties, exhibiting a structure and physical properties similar to those of natural teeth.

[0012] Technical solution

[0013] The present invention provides an oral prosthesis having a structure similar to that of a natural tooth. The oral prosthesis is a cured material containing ceramic particles dispersed in a polymer matrix. The oral prosthesis includes: a first cured material layer having a ceramic particle content of 70 to 90% by weight and an average particle size of 100 to 1000 nm; and a second cured material layer adjacent to the inner side of the first cured material layer having a ceramic particle content of 40 to 60% by weight and an average particle size of 10 to 500 μm.

[0014] In a preferred embodiment of the present invention, the biaxial flexural strength of the first cured layer can be 300 to 500 MPa, the elastic modulus can be 50 to 110 GPa, and the hardness can be 3 to 6 GPa.

[0015] In a preferred embodiment of the present invention, the biaxial flexural strength of the second cured layer can be 100 to 300 MPa, the elastic modulus can be 5 to 20 GPa, and the hardness can be 0.5 to 1.5 GPa.

[0016] In one embodiment of the present invention, the ceramic particles are selected from at least one of barium silicate crystalline glass, leucite crystalline glass, alumina, zirconium oxide, and glass.

[0017] In one embodiment of the present invention, the surface of the ceramic particles is treated with silane.

[0018] In one embodiment of the present invention, the polymer matrix is ​​a cured product of at least one polymeric organic compound selected from hydroxy ethylmethacrylate (HEMA), 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]propane (Bis-GMA), triethylene glycol dimethacrylate (TEGDMA), diurethane dimethacrylate (UDMA), urethane dimethacrylate (UDM), biphenyl dimethacrylate (BPDM), n-tolylglycine-glycidylmethacrylate (NTGE), polyethylene glycol dimethacrylate (PEG-DMA), and oligocarbonate dimethacrylic esters.

[0019] In a preferred embodiment of the present invention, the first cured layer has a dense structure and the second cured layer has a porous structure.

[0020] In one embodiment of the present invention, the cured material is a cured material formed by photocuring or thermal curing.

[0021] In a preferred embodiment of the present invention, the repair is manufactured by 3D printing.

[0022] Another embodiment of the present invention provides a method for fabricating an oral prosthesis having a structure similar to that of a natural tooth, which uses a curable composition comprising ceramic particles and a polymeric organic compound to fabricate the oral prosthesis by 3D printing, comprising the following steps:

[0023] The first curable composition and the second curable composition are used as curable compositions and laminated in a prescribed shape. The first curable composition contains 70 to 90% by weight of ceramic particles with an average particle size of 100 to 1000 nm. The second curable composition contains 40 to 60% by weight of ceramic particles with an average particle size of 10 to 500 μm. The mixture is then cured.

[0024] In one embodiment of the present invention, at least one selected from barium silicate crystalline glass, leucite crystalline glass, alumina, zirconium oxide, and glassy materials is used as ceramic particles.

[0025] In one embodiment of the present invention, the polymerizable organic compound used is at least one selected from hydroxy ethyl methacrylate (HEMA), 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]propane (Bis-GMA), triethylene glycol dimethacrylate (TEGDMA), diurethane dimethacrylate (UDMA), urethane dimethacrylate (UDM), biphenyl dimethacrylate (BPDM), n-tolylglycine-glycidylmethacrylate (NTGE), polyethylene glycol dimethacrylate (PEG-DMA), and oligocarbonate dimethacrylic esters.

[0026] In a preferred embodiment of the present invention, the predetermined shape of the first curing composition is a dense structure that mimics the enamel of natural teeth, and the predetermined shape of the second curing composition is a porous structure that mimics the dentin of natural teeth.

[0027] In one embodiment of the present invention, the curing step is carried out by photocuring or thermal curing.

[0028] Beneficial effects

[0029] This invention relates to an oral prosthesis comprising ceramic particles dispersed within a polymer matrix. It proposes a prosthesis with a structure and properties similar to enamel and dentin of natural teeth, and a method for fabricating it using 3D printing technology. This enables the production of oral prostheses with the high aesthetic appeal required for oral restorative materials and properties similar to adjacent or opposing teeth. Because the oral prosthesis has a structure and properties similar to natural teeth, it can prevent wear and tear on adjacent or opposing teeth after implantation in the patient's mouth, thus preventing secondary infections and other problems. Attached Figure Description

[0030] Figures 1 to 2 The enamel of natural teeth is shown. Figure 1 ) and ivory ( Figure 2 SEM images of the microstructure of ( ). Detailed Implementation

[0031] Referring to the accompanying drawings, the above and additional aspects of the present invention will be more clearly understood through the preferred embodiments described. Hereinafter, these embodiments of the invention will be described in detail to facilitate understanding and reimplementation by those skilled in the art.

[0032] Figures 1 to 2 The enamel of natural teeth is shown. Figure 1 ) and ivory ( Figure 2 SEM images of the microstructure of ( ).

[0033] This invention maximizes the realization of a natural tooth with this dual structure by using a cured material containing ceramic particles dispersed within a polymer matrix. It proposes an oral prosthesis comprising: a first cured layer having a ceramic particle content of 70 to 90 wt% and an average particle size of 100 to 1000 nm; and a second cured layer adjacent to the inner side of the first cured layer having a ceramic particle content of 40 to 60 wt% and an average particle size of 10 to 500 μm.

[0034] In this invention, it was confirmed that the difference in microstructure and physical properties between enamel and dentin in natural teeth is due to the influence of the content and structure of inorganic and organic substances. A curable composition containing polymeric organic compounds and ceramic particles can express this characteristic at the structural level, which is why this invention was considered. It was confirmed that using this curable composition to achieve the microstructure using 3D printing technology yields the best results. In particular, it was confirmed that in the process of achieving a dual structure, using a dual curable composition with controlled ceramic particle size and content can produce cured enamel and dentin with physical properties close to those of natural teeth.

[0035] From this perspective, preferably, the dental prosthesis comprises: a first cured layer having a ceramic particle content of 70 to 90% by weight and an average particle size of 100 to 1000 nm; and a second cured layer having an average particle size of 10 to 500 μm. In this case, the second cured layer is formed adjacent to the inner side of the first cured layer, reflecting and realizing the layered structure of the enamel and dentin of a natural tooth; the shape of this layer is not limited.

[0036] In the dental prosthesis of the present invention, the higher the content of ceramic particles and the smaller the size of the ceramic particles, the higher the density of the ceramic particles after curing, thereby improving the physical properties.

[0037] Specifically, the smaller the size and the higher the content of ceramic particles, the more ceramic-like the properties of the mixture become, thus high physical properties can be expected. Conversely, it has been confirmed that the higher the polymer content, the lower the physical properties of the mixture. Furthermore, even if the ceramic content within the polymer is similar, smaller ceramic particle size leads to increased ceramic distribution, which in turn improves physical properties.

[0038] From this perspective, preferably, in the overall composition of the first cured layer, the content of ceramic particles contained in the first cured layer accounts for 70% to 90% by weight, and the average particle size of the ceramic particles contained in the first cured layer is 100 nm to 1000 nm.

[0039] In addition, preferably, the content of ceramic particles contained in the second cured layer in the overall composition of the second cured layer is 40% to 60% by weight, and the average particle size of the ceramic particles contained in the second cured layer is 10 μm to 500 μm.

[0040] As described above, when two cured layers comprising controlled amounts and sizes of ceramic particles dispersed within a polymer matrix are used, the first cured layer can have a biaxial flexural strength of 300 to 500 MPa, an elastic modulus of 50 to 110 GPa, and a hardness of 3 to 6 GPa; the second cured layer can have a biaxial flexural strength of 100 to 300 MPa, an elastic modulus of 5 to 20 GPa, and a hardness of 0.5 to 1.5 GPa. These properties correspond to those of enamel and dentin in natural teeth, respectively, achieving the properties of both. Enamel has a dense structure and high physical properties to facilitate chewing and function as a component in contact with adjacent and opposing teeth, while dentin possesses elasticity and flexibility consistent with the stresses exhibited during chewing.

[0041] In the foregoing and following descriptions, "ceramic particles" can refer to a variety of inorganic materials used in the preparation of dental prostheses, and are not limited to this. In a specific example, they can be at least one selected from barium silicate crystalline glass, leucite crystalline glass, alumina, zirconium oxide, and vitreous materials.

[0042] Furthermore, preferably, the surface of these ceramic particles, after being treated with silane, can improve the bonding force with the polymer matrix, ultimately enhancing the mechanical properties of the dental prosthesis. An example of the silane coupling agent used in this case is a silane coupling agent possessing reactive functional groups such as (meth)acrylate, epoxy, vinyl, amino, and mercapto groups; one or more of these groups may be used, but this is not a limitation.

[0043] In the oral prosthesis of the present invention, the polymer forming the matrix can be a cured product of a thermopolymerizable or photopolymerizable polymeric organic compound known in the art, but is not limited thereto. Examples include: hydroxyethyl methacrylate (HEMA), 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]propane (Bis-GMA), triethylene glycol dimethacrylate (TEGDMA), diurethane dimethacrylate (UDMA), urethane dimethacrylate (UDM), biphenyl dimethacrylate (BPDM), n-tolyglycine-glycidylmethacrylate (NTGE), and polyethylene glycol dimethacrylate. A cured product of at least one polymerizable organic compound selected from dimethacrylate (PEG-DMA) and oligocarbonate dimethacrylic esters.

[0044] In this invention, a dental prosthesis is prepared using a cured material containing ceramic particles dispersed within the polymer matrix. In this case, a prosthesis with a dual structure can be prepared using 3D printing. This dual structure consists of enamel and dentin, which are similar to those of natural teeth.

[0045] Currently, the most widely used 3D printing methods for fabricating dental prostheses are those using metals and polymers. Metal 3D printing utilizes lasers to melt metal and then stacks the molten solution, while polymer 3D printing uses photocuring agents to stack polymers and then cures the polymers using a light source.

[0046] In 3D printing, methods using only ceramics for printing are still under research; most methods employ a mixture of organic compounds for curing. Important variables in this approach include the ratio of ceramic to polymer content and the size of the ceramic particles, which allows for adjustment of the post-curing properties. As described above, this invention can control the ratio and size of ceramic particles, enabling the reproduction of natural tooth structures using 3D printing.

[0047] In natural teeth, enamel has Figure 1 The dense structure shown is characteristic of dentin. Figure 2 The illustrated pore structure, more specifically, has a tubular pore structure with a size of approximately 100 to 1000 nm. To similarly realize such a natural tooth, this invention utilizes 3D printing to reveal this microstructure.

[0048] According to the present invention, a dual structure identical to that of natural teeth is achieved using 3D printing. The physical properties exhibited after curing are modified according to the materials forming each structure, the content of each material, and the particle size of the materials. The oral restoration of the present invention exhibits a color and physical properties extremely similar to teeth, making it suitable for use as an oral restoration material.

[0049] One of the ultimate goals is to make dental restorations have an aesthetic and physical properties that are extremely similar to natural teeth, so that when they are implanted in the mouth, they blend in very naturally with the surrounding teeth.

[0050] Therefore, this invention proposes a method for fabricating oral prostheses, which utilizes 3D printing to present a dual structure similar to natural teeth. By adjusting the content of ceramics and polymers, as well as the size of ceramic particles, the enamel and dentin of natural teeth can be achieved.

[0051] Specifically, according to the present invention, a method for fabricating an oral prosthesis having a structure similar to that of a natural tooth uses a curing composition comprising ceramic particles and a polymeric organic compound to fabricate the oral prosthesis by 3D printing, comprising the following steps: using a first curing composition and a second curing composition as curing compositions, and stacking them in a predetermined shape, wherein the first curing composition contains 70 to 90% by weight of ceramic particles and the average particle size of the ceramic particles is 100 to 1000 nm, and the second curing composition contains 40 to 60% by weight of ceramic particles and the average particle size of the ceramic particles is 10 to 500 μm; and curing.

[0052] When fabricating dental restorations using ceramics with a structure similar to natural teeth, 3D printing methods such as stereolithography (SLA) and digital lighting process (DLP) are suitable. These methods print layers in a manner resembling the enamel and dentin structure of natural teeth, and then use a light or heat source to cure polymeric organic compounds, achieving polymerization. In this case, a light source with a wavelength of 300 to 600 nm is used, but this limitation is not strictly applicable.

[0053] In order to achieve physical properties similar to enamel and dentin of natural teeth respectively, the size variation of ceramic particles and the content of ceramics and polymers can be controlled to ensure multiple physical properties. At this level, a first curing composition and a second curing composition are used as curing compositions, and layers are printed and laminated. In the first curing composition, the content of ceramic particles is 70 to 90% by weight, and the average particle size of the ceramic particles is 100 to 1000 nm. In the second curing composition, the content of ceramic particles is 40 to 60% by weight, and the average particle size of the ceramic particles is 10 to 500 μm.

[0054] As mentioned above, the ceramic particles used here can be at least one selected from barium silicate crystalline glass, leucite crystalline glass, alumina, zirconium oxide and glass. Of course, the surface of such ceramic particles can be treated with silane.

[0055] Furthermore, the polymerizable organic compound may be selected from at least one of hydroxy ethylmethacrylate (HEMA), 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]propane (Bis-GMA), triethylene glycol dimethacrylate (TEGDMA), diurethane dimethacrylate (UDMA), urethane dimethacrylate (UDM), biphenyl dimethacrylate (BPDM), n-tolylglycine-glycidylmethacrylate (NTGE), polyethylene glycol dimethacrylate (PEG-DMA), and oligocarbonate dimethacrylic esters.

[0056] As an example, based on the ceramic particle size and ceramic particle content ratio of the two curing compositions, the silane-treated ceramic particles are respectively mixed into a solution of this polymeric organic compound, and each curing composition is poured into a 3D printing device.

[0057] These various curing compositions are stacked in a predetermined shape, wherein the predetermined shape of the first curing composition is such that the components constituting the outer surface of the tooth mimic the dense structure of the enamel of a natural tooth, and the predetermined shape of the second curing composition is such that the components constituting the inner surface of the tooth mimic the porous structure of the dentin of a natural tooth, specifically, a tubular porous structure. They are stacked, and curing is performed simultaneously with stacking.

[0058] At this point, curing can be either light curing or thermal curing. Light curing utilizes a light source to achieve light curing.

[0059] Of course, when using a light-curing agent, the required light source is used to irradiate it to cause curing, while when using a heat-curing agent, the required temperature is provided to cause curing.

[0060] According to the present invention, a repair is obtained by 3D printing using a first curing composition and a second curing composition. The repair comprises: a first cured layer having an imitation... Figure 1 The microstructure of the enamel shown; the second cured layer, which has the characteristics of mimicking... Figure 2 The microstructure of dentin is shown. This restoration can achieve a cured layer exhibiting the properties described in Table 1 below, corresponding to the enamel and dentin of natural teeth. This invention can provide oral restorations with a structure similar to that of natural teeth.

[0061] Table 1:

[0062] Biaxial bending strength (MPa) Elastic modulus (GPa) Vickers hardness (GPa) First cured layer 300-500 50-110 3.0–6.0 Second cured layer 100-300 5-20 0.5–1.5

[0063] The present invention has been described with reference to one embodiment shown in the accompanying drawings; however, this is merely illustrative, and it should be understood that various modifications and equivalent embodiments can be made thereto by those skilled in the art.

[0064] Industrial applicability

[0065] This invention relates to an oral prosthesis formed from a cured material containing ceramic particles dispersed in a polymer matrix and a method for manufacturing the same, and more specifically, to an oral prosthesis having a structure similar to that of a natural tooth and a method for manufacturing the prosthesis using 3D printing technology.

[0066] This invention relates to an oral prosthesis comprising ceramic particles dispersed within a polymer matrix. It proposes a prosthesis with a structure and properties similar to enamel and dentin of natural teeth, and a method for fabricating it using 3D printing technology. This enables the production of oral prostheses with the high aesthetic appeal required for oral restorative materials and properties similar to adjacent or opposing teeth. Because the oral prosthesis has a structure and properties similar to natural teeth, it can prevent wear and tear on adjacent or opposing teeth after implantation in the patient's mouth, thus preventing secondary infections and other problems.

Claims

1. An oral prosthesis having a structure similar to that of a natural tooth, characterized in that, The dental prosthesis is a cured material, which has a structure composed of a first cured material layer and a second cured material layer stacked together. The first and second cured material layers respectively contain ceramic particles dispersed within a polymer matrix. The first cured layer has a dense structure, in which 70 to 90% by weight of ceramic particles are dispersed within a polymer matrix. The average particle size of these ceramic particles is 100 to 1000 nm. The second cured layer has a porous structure and is adjacent to the inner side of the first cured layer. It contains 40 to 60% by weight of ceramic particles with an average particle size of 10 to 500 μm dispersed within the polymer matrix. The first cured layer and the second cured layer are formed by 3D printing their respective curable compositions layer by layer.

2. The oral prosthesis with a structure similar to natural teeth according to claim 1, characterized in that, The first cured layer has a biaxial flexural strength of 300 to 500 MPa, an elastic modulus of 50 to 110 GPa, and a hardness of 3 to 6 GPa.

3. The oral prosthesis with a structure similar to natural teeth according to claim 1, characterized in that, The second cured layer has a biaxial flexural strength of 100 to 300 MPa, an elastic modulus of 5 to 20 GPa, and a hardness of 0.5 to 1.5 GPa.

4. The oral prosthesis with a structure similar to natural teeth according to claim 1, characterized in that, The ceramic particles are selected from at least one of barium silicate crystalline glass, leucite crystalline glass, alumina, zirconium oxide, and glass.

5. The oral prosthesis having a structure similar to a natural tooth according to claim 1 or 4, characterized in that, The surface of the ceramic particles is treated with silane.

6. The oral prosthesis having a structure similar to natural teeth according to claim 1, characterized in that, The polymer matrix is ​​a cured product of at least one polymerizable organic compound selected from hydroxyethyl methacrylate, 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]propane, triethylene glycol dimethacrylate, diurea dimethacrylate, polyurethane dimethacrylate, biphenyl dimethacrylate, n-tolueneglycine glycidyl methacrylate, polyethylene glycol dimethacrylate, and oligocarbonate dimethacrylate.

7. The oral prosthesis having a structure similar to natural teeth according to claim 1, characterized in that, Cured materials are solidified materials formed through light curing or heat curing.

8. A method for fabricating an oral prosthesis with a structure similar to natural teeth, comprising using a curable composition containing ceramic particles and a polymeric organic compound to fabricate the oral prosthesis by 3D printing, characterized in that, Includes the following steps: A first cured layer having a dense structure mimicking the enamel of natural teeth is printed by 3D printing from a first cured composition, wherein 70 to 90% by weight of ceramic particles with an average particle size of 100 to 1000 nm are dispersed in a polymer matrix. A second cured layer with a porous structure mimicking dentin of natural teeth is printed by 3D printing from a second cured composition, wherein 40 to 60% by weight of ceramic particles with an average particle size of 10 to 500 μm are dispersed in a polymer matrix; and The first cured layer and the second cured layer are stacked and cured.

9. The method for fabricating an oral prosthesis with a structure similar to natural teeth according to claim 8, characterized in that, At least one of the following is selected from barium silicate crystalline glass, leucite crystalline glass, alumina, zirconium oxide and glassy materials as ceramic particles.

10. The method for fabricating an oral prosthesis with a structure similar to natural teeth according to claim 8, characterized in that, The polymerizable organic compound uses at least one selected from hydroxyethyl methacrylate, 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]propane, triethylene glycol dimethacrylate, diurea dimethacrylate, polyurethane dimethacrylate, biphenyl dimethacrylate, n-tolueneglycine glycidyl methacrylate, polyethylene glycol dimethacrylate, and oligocarbonate dimethacrylate.

11. The method for fabricating an oral prosthesis with a structure similar to natural teeth according to claim 8, characterized in that, The curing process is carried out by light curing or heat curing.

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