KR102668433B1 - High strengthen and high aesthetic composite material for tooth restoration and method thereof - Google Patents

Abstract

The present invention relates to a reinforced composite material for tooth restoration and a method of manufacturing the same. More specifically, the present invention relates to a reinforced composite material for tooth restoration and a method of manufacturing the same. More specifically, the strength and aesthetics are improved and processability is improved by combining a biocompatible ceramic with a methyl methacrylate (MMA)-based polymer material. It relates to excellent reinforced composite materials for tooth restoration and methods for manufacturing the same.

Description

Reinforced composite material for tooth restoration with high strength and high aesthetics and manufacturing method thereof {HIGH STRENGTHEN AND HIGH AESTHETIC COMPOSITE MATERIAL FOR TOOTH RESTORATION AND METHOD THEREOF}

The present invention is a reinforced composite material for tooth restoration and a method of manufacturing the same. More specifically, the present invention relates to a reinforced composite material for tooth restoration and a method of manufacturing the same. More specifically, the present invention relates to a reinforced composite material with an unsaturated double bond and a bioceramic compatibility ceramic combined with an MMA-based polymer material to improve physical properties and aesthetics, with high strength and high aesthetic properties. It relates to a reinforced composite material for tooth restoration and a method of manufacturing the same.

When teeth are damaged due to cavities, gum disease, tooth extraction, etc., not only are they difficult to shred for food intake, but the shape of the face gradually becomes asymmetrical, which has a significant impact on daily life. Therefore, it is essential to quickly treat damaged or extracted teeth or replace them with artificial teeth to lead a healthy life.

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In general, various prosthetic procedures such as implants, bridges, and dentures are used to treat teeth damaged by cavities, gum disease, or tooth extraction. For patients with damaged or missing teeth, chewing and aesthetic treatment is provided through dental restorative or prosthetic procedures, which are tooth replacement treatments. Dental restorations can be broadly divided into direct restorations and indirect restorations depending on the treatment method. Direct restorations are performed using methods such as chemical hardening and photocuring in small areas where restoration is possible within the oral cavity, and indirect restorations are performed on small areas within the oral cavity where restoration is possible. A representative example is prosthetics. When a part of a tooth is partially damaged due to tooth decay or fracture, the process of cutting out the affected part of the tooth that requires surgery and sealing the formed cavity with a tooth replacement material is called restoration. The tooth replacement material used in this case is a dental restorative material. .

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Dental restorative materials are one of the core dental materials that are used in a very wide range of areas, including orthodontic treatment and aesthetic dental treatment, in addition to general dental procedures such as restoring damaged teeth and entire crowns or fixing unstable teeth.

These dental restorative materials require various characteristics that are different from general materials due to the special environment in the oral cavity. That is, a humid environment with a relative humidity close to 100%, high occlusal pressure generated during mastication, rapid temperature changes, close contact with biological ceramic tissue, frequent side effects such as hypersensitivity reactions, and the presence of countless bacterial species in the oral cavity, etc. It must be manufactured taking into account various factors. In addition, color harmony with hemorrhoids should be considered, reflecting the high aesthetic needs of individuals due to the recent development of mass media.

Prosthodontics refers to the manufacture of artificial replacements, such as fixed prosthesis or removable prosthesis, for the area where the tooth was extracted in order to minimize the side effects of tooth loss. Fixed prosthesis is a method of grinding the surface of the adjacent natural teeth at the front and rear of the missing tooth by approximately 1.0 to 1.5 mm and covering the prosthesis. Since it is easy to pronounce like natural teeth, has no foreign substances, and has high masticatory efficacy, it is recommended to use dentures if possible. There is a tendency to restore it with a crown or bridge rather than a partial denture. Removable prostheses are inevitably used when the most posterior teeth or many teeth are lost and there is a lack of sound abutment teeth to use for fixed prosthesis. Although it has the advantage of a shorter treatment period and lower costs, the foreign matter is large and the masticatory efficiency is 1/4 to 1/4. The downside is that it drops significantly to about 1/10.

Dental prosthetics are usually made of custom-made materials and are used as a replacement for tooth structures. Common dental prostheses include restorative materials, supplements, inlays, onlays, veneers, full and partial crowns, bridges, implants, posts, etc. I can hear it. Prosthetics are manufactured manually by a dentist with specialized knowledge, or by a skilled professional technician at a laboratory capable of manufacturing them.
Meanwhile, medical materials can be broadly divided into metal, ceramic, and polymer materials. Metal has excellent mechanical properties such as tensile strength and compressive strength, and can be used for cutting, grinding, forming, etc. It is easy to process into the desired shape and is relatively stable against chemical reactions, but it has the disadvantage of being strongly bonded to the metal material, which can inhibit the growth of bone tissue, and when worn in the body for a long period of time, may be damaged by partial corrosion. Ceramic materials are highly compatible when used in the body, but have low impact strength and cannot be deformed after being manufactured, making it difficult to respond to shape deformation and bone recovery. Currently, medical materials tend to use polymer materials that have excellent strength, are easy to process, and are bioceramically stable. Medical polymers are used in a wide range of areas, including bone cement, heart valves, contact lenses, artificial soft tissues, bioceramic fillers, 3D printing materials, and artificial joints, and the areas in which they are used are also increasing.

Prosthetics for use in prosthetic procedures are manufactured using the above-mentioned medical materials, and dentures are manufactured using PMMA (poly methyl methacrylate), as in Korea Patent Publication No. 10-2009-0056121.

However, PMMA has the disadvantage of being prone to surface wear and scratches due to its vulnerability in bending strength and surface strength, and being easily broken by external forces. Accordingly, there is an urgent need for research and development of materials to solve these problems.

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The purpose of the present invention is to provide a reinforced composite material for tooth restoration that has superior strength compared to conventional PMMA blocks and is less likely to be damaged by external impact.

In addition, the purpose of the present invention is to provide a reinforced composite material for tooth restoration that can be used as restorative materials for indirect restoration, such as inlays, onlays, veneers, and single crowns.

Meanwhile, the present invention provides a method of manufacturing a reinforced composite material for tooth restoration that can impart high strength properties to the reinforced composite material for tooth restoration using equipment in which temperature and pressure are maintained constant.

Other objects and advantages of the present invention will become clearer from the following detailed description, scope, and drawings.

A reinforced composite material for tooth restoration according to an embodiment of the present invention for achieving the above-described object includes a polymer having an unsaturated double bond, a bioceramic ceramic, an initiator, an additive, and a pigment, and a polymer having the unsaturated double bond. is characterized in that it is a methyl methacrylate (MMA)-based monomer.
In addition, the MMA-based polymer having an unsaturated double bond is 2,2-bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)propane (Bis-GMA), ethylene glycol Dimethacrylate (TGDMA), triethylene glycol dimethacrylate (TEGDMA), ethoxylate bisphenol A dimethacrylate (Bis-EMA), urethane dimethacrylate (UDMA), dipentaeryltritol penta Acrylate monophosphate (dipentaerythritol pentaacrylate monophosphate, PENTA), 2-hydrozyethyl methacrylate (HEMA), polyalkenic acid, biphenyl dimethacrylate (BPDM) It may be one or two or more polymers selected from the group consisting of , and glycerol phosphate dimethacrylate (GPDM).
Additionally, the bioceramic ceramic may include an inorganic filler or an organic filler.
Additionally, the particle size of the bioceramic ceramic may be 0.01 to 10㎛.
Additionally, the bioceramic ceramic may be one or two or more selected from the group consisting of amorphous synthetic silica, crystalline natural silica, barium aluminum silicate, strontium aluminum silicate, zirconium silicate, kaolin, talc, zirconia, and acid-reactive filler.
Additionally, the initiator may include a photo polymerization initiator or a thermal polymerization initiator.
In addition, the photopolymerization initiator includes benzyl dimethyl ketal, benzophenone, and 2,4,6-trimethylbenzoyl-diphenyl-phosphineoxide. , TPO), and camphorquinone, and the thermal polymerization initiator is benzoyl peroxide (BPO), t-butylperoxybenzoate (TBPB), and 2,2-ah. It may be one or two or more selected from the group consisting of 2,2-Azobisisobutyronitrile (AIBN).
In addition, the additive is selected from the group consisting of hydroquinone (HQ), hydroquinone mono methyl ether (MEHQ), hydroquinone mono ethyl ether (EEHQ), Tinubin, Iganox, and butylated hydroxy toluene (BHT). There may be one or more than one.
Additionally, the pigment may be made of iron oxide (FeO).
In addition, the MMA-based polymer having an unsaturated double bond may be included in an amount of 1 to 40% by weight based on the total weight of the composition.
Additionally, the bioceramic ceramic may be included in an amount of 30 to 99% by weight based on the total weight of the composition.
Additionally, the initiator may be included in an amount of 0.01 to 10% by weight based on the total weight of the composition.
Additionally, the additive may be included in an amount of 0.001 to 10% by weight based on the total weight of the composition.
Additionally, the pigment may be included in an amount of 0.0001 to 5% by weight based on the total weight of the composition.
Meanwhile, a method of manufacturing a reinforced composite material for tooth restoration according to an embodiment of the present invention includes a first step of mixing an initiator, an additive, and a pigment with a polymer having an unsaturated double bond; A second step of adding bioceramic ceramics to the mixture of the first step and mixing for 24 to 36 hours; and a third step of curing the mixture of the second step, wherein the polymer having the unsaturated double bond is a methyl methacrylate (MMA)-based monomer.
In addition, in the first step, based on the total weight of the composition, the polymer having an unsaturated double bond of the MMA type is 1 to 40% by weight, the initiator is 0.01 to 10% by weight, the additive is 0.001 to 10% by weight, and The pigment may be included in an amount of 0.0001 to 5% by weight, and in the second step, the bioceramic ceramic may be included in an amount of 30 to 99% by weight based on the total weight of the composition.
In addition, the third step is to cure the mixture by pressing it at a pressure of 1 to 1,000 bar in a temperature range of 0 to 1000°C using a constant temperature pressurizing autoclave or a medical hot isotropic pressurizing device in a nitrogen, argon and air atmosphere. You can.
Additionally, in the third step, the mixture can be cured by pressing it at a pressure of 5 to 700 bar in a temperature range of 50 to 300°C.

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According to one embodiment of the present invention, a reinforced composite material for tooth restoration with high strength and high aesthetics that improves both physical and aesthetic properties is provided by complexing a bioceramic compatible ceramic with an MMA-based polymer material having an unsaturated double bond. You can.

1 is a flowchart of a method for manufacturing a reinforced composite material for dental restoration of the present invention.
Figure 2 is a process schematic diagram of the process of manufacturing the reinforced composite material for tooth restoration of the present invention.
Figure 3a is experimental data analyzing the bending strength according to pressure in the third step (curing step).
Figure 3b is experimental data analyzing flexural strength according to temperature in the third step (curing step).
Figure 4 shows the results of an experiment comparing the color tone of the reinforced composite material for tooth restoration of the present invention and the advanced yarn material according to the addition of pigment.
Figure 5 shows experimental data on the CIE colorimetric system (L*, a*, b*) and color difference value (△E*) comparing the reinforced composite material for tooth restoration and advanced yarn according to the addition of pigment.

The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art, and the following examples may be modified into various other forms, and the scope of the present invention is as follows. It is not limited to the examples. Rather, these embodiments are provided to make the disclosure more faithful and complete, and to fully convey the spirit of the invention to those skilled in the art.

In addition, the thickness and size of each layer in the drawings are exaggerated for convenience and clarity of explanation, and the same symbols refer to the same elements in the drawings. As used herein, the term “and/or” includes any one and all combinations of one or more of the listed items.

The terms used herein are used to describe specific embodiments and are not intended to limit the invention. As used herein, the singular forms include the plural forms unless the context clearly indicates otherwise. Additionally, when used herein, “comprise” and/or “comprising” means specifying the presence of stated features, numbers, steps, operations, members, elements and/or groups thereof. and does not exclude the presence or addition of one or more other shapes, numbers, operations, members, elements and/or groups.

Reinforced composite material for tooth restoration
Hereinafter, a reinforced composite material for tooth restoration according to an embodiment of the present invention will be described.
The reinforced composite material for tooth restoration of the present invention includes a polymer having an unsaturated double bond, a bioceramic ceramic, an initiator, an additive, and a pigment. And, the polymer having an unsaturated double bond is a methyl methacrylate (MMA)-based monomer.

The polymer having the unsaturated double bond is an MMA polymer with an unsaturated double bond, and is not limited to a specific polymer. As an example, the MMA-based unsaturated double bond polymer is 2,2-bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)propane (Bis-GMA), ethylene glycol Dimethacrylate (TGDMA), triethylene glycol dimethacrylate (TEGDMA), ethoxylate bisphenol A dimethacrylate (Bis-EMA), urethane dimethacrylate (UDMA), dipentaeryltritol penta Acrylate monophosphate (dipentaerythritol pentaacrylate monophosphate, PENTA), 2-hydrozyethyl methacrylate (HEMA), polyalkenic acid, biphenyl dimethacrylate (BPDM) , and glycerol phosphate dimethacrylate (GPDM). Particularly preferred is a mixture of 2,2-bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)propane (Bis-GMA) and triethylene glycol dimethacrylate (TEGDMA). It may be in the form.

Meanwhile, bioceramic ceramics may include inorganic fillers or organic fillers. Inorganic fillers include, but are not limited to, examples of amorphous synthetic silica, crystalline natural silica, barium aluminum silicate, strontium aluminum silicate, zirconium silicate, kaolin, talc, zirconia, acid reactive fillers, etc. Therefore, it may be used in the form of a mixture of 2 or more.
In general, inorganic fillers are hydrophilic and therefore have poor miscibility with the hydrophobic MMA monomers, so affinity with the monomers can be increased by including a binder component or surface treating the inorganic fillers with a silane coupling agent. Specific examples of silane coupling agents as hydrophobic surface treatment agents for inorganic fillers are well-known compounds, and detailed descriptions thereof will be omitted.
The size of the bioceramic particles used in the reinforced composite material for tooth restoration is not limited, but a preferred example is 0.01 to 10㎛. When particles larger than 10 ㎛ are used, the physical properties are relatively reduced, and chipping occurs during CAD/CAM processing, and when particles smaller than 0.01 ㎛ are used, the surface area of the composition increases. It is undesirable because the viscosity is high, internal bubbles cannot be removed, and a homogeneous mixture cannot be produced.
Additionally, bioceramics may be included in an amount of 30 to 99% by weight based on the total weight of the composition.

Meanwhile, the initiator is a polymerization initiator, and depending on the type of catalyst used in the polymerization reaction, it can be carried out in various ways, such as a cation formation mechanism, an anion formation mechanism, and a radical formation mechanism, with the radical formation mechanism being the most commonly used. According to these mechanisms, the polymerization reaction may be performed by photo polymerization, thermal polymerization, etc., and the initiator may include a photo polymerization initiator or a thermal polymerization initiator.

The photo polymerization initiator is Benzyl dimethyl ketal, benzophenone, 2,4,6-Trimethylbenzoyl-diphenyl-phosphineoxide (2,4,6-Trimethylbenzoyl-diphenyl-phosphineoxide, TPO) , it may be one or two or more selected from the group consisting of camphorquinone. Preferably, it can be done with Camphorquinone. The thermal polymerization initiator is one or two selected from the group consisting of benzoyl peroxide (BPO), t-butylperoxybenzoate (TBPB), and 2,2-Azobisisobutyronitrile (AIBN). It could be more than that. Preferably it can be done with benzoyl peroxide (BPO).
Meanwhile, the additive is selected from the group consisting of hydroquinone (HQ), hydroquinone mono methyl ether (MEHQ), hydroquinone mono ethyl ether (EEHQ), tinuvin, Iganox, and butylated hydroxy toluene (BHT). There may be one or more than one.
Meanwhile, the pigment may be made of iron oxide (FeO).
Other known compounds may be added to the composition of the present invention as long as they do not impair the effect of the invention, and such substances include polymerization inhibitors, antioxidants, and pigments.

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Manufacturing method of reinforced composite material for tooth restoration
1 is a flowchart of a method for manufacturing a reinforced composite material for dental restoration of the present invention. Hereinafter, a method for manufacturing a reinforced composite material for tooth restoration according to an embodiment of the present invention will be described.
The method for manufacturing a reinforced composite material for tooth restoration of the present invention includes a first step (S1) of mixing an initiator, an additive, and a pigment with a polymer having an unsaturated double bond; A second step (S2) of adding bioceramics to the mixture of the first step and mixing for 24 to 36 hours; and a third step (S3) of curing the mixture of the second step, wherein the polymer having the unsaturated double bond is a methyl methacrylate (MMA)-based monomer.
In the first step (S1), based on the total weight of the composition, the polymer having an unsaturated double bond of the MMA type is 1 to 40% by weight, the initiator is 0.01 to 10% by weight, the additive is 0.001 to 10% by weight, and The pigment may be included at 0.0001 to 5% by weight, and in the second step, the bioceramic is included at 30 to 99% by weight based on the total weight of the composition, but is not limited to this range.
Meanwhile, the second step (S2) of the present invention includes mixing the bioceramic with the mixture of the first step for 24 to 36 hours in a reduced pressure high viscosity mixer to obtain a homogeneous mixture of polymer and inorganic filler, and is limited to this. It doesn't work.
Meanwhile, the third step (S3) of the present invention is a step of curing the mixture, using a constant temperature pressurizing autoclave or medical hot isotropic pressurization device in a nitrogen, argon, and air atmosphere, at a temperature range of 0 to 1000°C. The mixture is pressed and cured at a pressure of 1,000 bar. Preferably, the mixture can be cured by pressing at a pressure of 5 to 700 bar in the temperature range of 50 to 300°C.
The pressure in the curing step may be 1 to 1,000 bar, preferably 5 to 700 bar. If the pressure is lower than 5 bar, the physical properties do not improve, and if it is higher than 700 bar, there is no change even if the pressure is further applied. Temperature conditions in the curing step may be 0 to 1000°C, preferably 50 to 300°C. If the temperature is lower than 50°C, polymerization does not proceed, and if it is higher than 300°C, the polymer may be deformed.
Meanwhile, when performing the manufacturing method of the present invention, polymerization equipment that maintains constant temperature and pressure can be used. There are no major restrictions on polymerization equipment as long as it is equipment that maintains constant temperature and pressure. Preferred examples include a constant temperature pressurizing autoclave or a medical hot isostatic pressurizing device.

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The reinforced composite material for tooth restoration of the present invention can be used as restorative materials for indirect restoration, such as inlay, onlay, veneer, and single crown. The restorative material is a prosthesis that is attached to the tooth when the tooth is missing, and the reinforced composite material for tooth restoration of the present invention can be manufactured using a CAD/CAM system.
Example

Hereinafter, the present invention will be described in more detail through examples. These examples are only for illustrating the present invention more practically, and it will be obvious to those skilled in the art that the scope of the present invention is not limited by these examples according to the gist of the present invention. will be.

Figure 1 is a flowchart of the manufacturing method of the reinforced composite material for dental restoration of the present invention, specifically, the first step is 1 to 40% by weight of an unsaturated double bond polymer; 0.01 to 10% by weight of initiator; Additive 0.001 to 10% by weight; and 0.0001 to 5% by weight of pigment. The second step includes mixing the bioceramic with the mixture of the first step using a reduced pressure high viscosity mixer for 24 to 36 hours to obtain a homogeneous mixture of polymer and inorganic filler. The third step is to cure the mixture. The polymer is cured using a constant temperature pressurizing autoclave and/or a medical hot isotropic pressurizing device, and is cured in an atmosphere of nitrogen, argon, or air. In the curing step, the pressure may be 1 to 1,000 bar, preferably 5 to 700 bar. If it is lower than 5 bar, the physical properties do not improve, and if it is higher than 700 bar, the physical properties do not change even if the pressure is applied further. does not exist. Temperature conditions include 0 to 1000°C, preferably 50 to 300°C. If the temperature is lower than 50°C, polymerization does not proceed, and if the temperature is higher than 300°C, the polymer may be deformed. More specifically, curing is performed after the mixture is placed in the mold.

Manufacturing a mixture of MMA-based polymers

Weigh 1 to 40 wt% of Bis-GMA and TEGDMA, 0.01 to 10 wt% of initiator, 0.001 to 10 wt% of additive, and 0.0001 to 5 wt% of pigment, place in a sealed container, and set the temperature to 35 to 50°C. The mixture is prepared by mixing for 10 to 24 hours using a mechanical stirrer.

Manufacture of MMA-based mixtures and bioceramic mixtures

In a high-viscosity mixer, mix 2 or more inorganic fillers of bioceramics and add 30 to 99% by weight to the mixture of MMA-based polymers several times. Once mixed, turn it on/off at -1 bar and do it several times. , and mix for 24 to 36 hours to prepare a homogeneous mixture.

Curing characteristics of reinforced composite materials for tooth restoration
[Experiment 1] Physical properties of reinforced composite materials for tooth restoration according to polymerization conditions
An experiment was conducted with the purpose of selecting the optimal conditions for manufacturing reinforced composite materials for tooth restoration through the physical properties of test specimens manufactured according to the temperature and pressure of a medical hot isostatic pressing device. Specimens for flexural strength analysis were conducted with reference to ISO 6872 and/or ISO 4049. The specimens were manufactured based on 2 Х 2 Х 25 (mm), and each test specimen was measured 5 times to determine the remaining values excluding the maximum and minimum values. The results were derived as average values.
Example 1: The reinforced composite material for tooth restoration manufactured as in Example was placed in a mold as shown in FIG. 2 and then cured using a medical hot isostatic pressing device. The curing conditions were specifically cured at a pressure of 20 bar and a temperature of 110°C.

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Example 2: Cured at 86 bar pressure and 110°C. Other conditions were prepared in the same manner as in Example 1.

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Example 3: Cured at 100 bar and 110°C. Other conditions were prepared in the same manner as in Example 1.

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Example 4: Cured at 200 bar and 110°C. Other conditions were prepared in the same manner as in Example 1.

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Example 5: Cured at 400 bar and 110°C. Other conditions were prepared in the same manner as in Example 1.
Comparative Example 1: Cured at 90°C, excluding pressure. Other conditions were prepared in the same manner as in Example 1.
Comparative Example 2: Prepared in the same manner as Example 1, except for pressure and curing at 100°C.
Comparative Example 3: Prepared in the same manner as Example 1, except for pressure and curing at 110°C.
Comparative Example 4: Prepared in the same manner as Example 1, except for pressure and curing at 120°C.
Comparative Example 5: Prepared in the same manner as Example 1, except for pressure and curing at 150°C.

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The results are as shown in Figures 3A and 3B. Specifically, it was confirmed that the flexural strength increased slightly as the pressure increased, but the amount of increase gradually decreased, which can be judged to be sufficient conditions for manufacturing at a pressure of 400 bar or more.

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[Experiment 2] Visual characteristics of reinforced composite materials for tooth restoration

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In Example 4, pigments were mixed in different ratios to produce shades of Dentin A series A1, A2, A3, A3.5 and A4. As shown in Figure 4, the color tone of the advanced company's product and the product manufactured from the reinforced composite material for tooth restoration through the examples was compared after manufacturing it in specimen sizes of 15 and 1T, and as shown in Figure 5, L*, a*, b* and △E* values were measured.
What has been described above is only one example for carrying out the high-strength and high-aesthetic reinforced composite material for tooth restoration and its manufacturing method according to the present invention, and the present invention is not limited to the above-described examples, and the following patents As claimed in the claims, it will be said that the technical spirit of the present invention exists to the extent that anyone skilled in the art can make various changes and implementations without departing from the gist of the present invention.

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Claims (18)

A reinforced composite material for tooth restoration containing polymers with unsaturated double bonds, bioceramics, initiators, additives, and pigments,
A first step of mixing an initiator, additives, and pigments with the polymer having the unsaturated double bond;
A second step of adding bioceramics to the mixture of the first step and mixing for 24 to 36 hours; and
A third step of curing the mixture of the second step by pressurizing the mixture at a pressure of 5 to 700 bar at a temperature range of 50 to 300° C. in an atmosphere of nitrogen, argon and air; It is manufactured by a manufacturing method comprising,
The reinforced composite material for tooth restoration contains 1 to 40% by weight of the polymer having the unsaturated double bond, 30 to 99% by weight of the bioceramic, 0.01 to 10% by weight of the initiator, and the additives, based on the total weight of the composition. 0.001 to 10% by weight, the pigment comprising 0.0001 to 5% by weight,
The polymer having the unsaturated double bond is 2,2-bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)propane (Bis-GMA) and ethylene glycol dimethacrylate (TGDMA) ), characterized in that,
Reinforced composite material for tooth restoration. delete According to paragraph 1,
The bioceramic is characterized in that it contains an inorganic filler or an organic filler.
Composite material for tooth restoration. According to paragraph 3,
Characterized in that the particle size of the bioceramic is 0.01 to 10㎛,
Reinforced composite material for tooth restoration. According to clause 4,
The bioceramic is characterized in that it is one or more selected from the group consisting of amorphous synthetic silica, crystalline natural silica, barium aluminum silicate, strontium aluminum silicate, zirconium silicate, kaolin, talc, zirconia, and acid-reactive filler,
Composite material for tooth restoration. According to paragraph 1,
Characterized in that the initiator includes a photo polymerization initiator or a thermal polymerization initiator.
Composite material for dental filling. According to clause 6,
The photo polymerization initiator is Benzyl dimethyl ketal, benzophenone, 2,4,6-trimethylbenzoyl-diphenyl-phosphineoxide (2,4,6-Trimethylbenzoyl-diphenyl-phosphineoxide, TPO) ), one or two or more selected from the group consisting of camphorquinone,
The thermal polymerization initiator is one selected from the group consisting of benzoyl peroxide (BPO), t-butylperoxybenzoate (TBPB), and 2,2-Azobisisobutyronitrile (AIBN). Characterized by two or more,
Composite material for tooth restoration. According to paragraph 1,
The additive is one selected from the group consisting of hydroquinone (HQ), hydroquinone mono methyl ether (MEHQ), hydroquinone mono ethyl ether (EEHQ), Tinubin, Iganox, butylated hydroxy toluene (BHT) Characterized by two or more,
Composite material for tooth restoration. According to paragraph 1,
The pigment is characterized in that it consists of iron oxide (FeO),
Composite material for tooth restoration. delete delete delete delete delete A method of manufacturing a reinforced composite material for tooth restoration,
A first step of mixing an initiator, additives, and pigments with a polymer having unsaturated double bonds;
A second step of adding bioceramics to the mixture of the first step and mixing for 24 to 36 hours; and
A third step of curing the mixture of the second step by pressurizing it at a pressure of 5 to 700 bar at a temperature range of 50 to 300° C. in an atmosphere of nitrogen, argon and air;
Including,
In the first step, based on the total weight of the composition, the polymer having the unsaturated double bond is 1 to 40% by weight, the initiator is 0.01 to 10% by weight, the additive is 0.001 to 10% by weight, and the pigment is 0.0001 to 5%. Included in weight percent,
In the second step, the bioceramic is included in an amount of 30 to 99% by weight based on the total weight of the composition,
The polymer having the unsaturated double bond is 2,2-bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)propane (Bis-GMA) and ethylene glycol dimethacrylate (TGDMA) ), characterized in that,
Method for manufacturing reinforced composite material for tooth restoration. delete According to clause 15,
The third step is,
Curing using a constant temperature pressurizing autoclave or a medical hot isostatic pressurizing device,
Method for manufacturing reinforced composite material for tooth restoration. delete