KR102237491B1 - Dental composition for coating and dental material comprising the same - Google Patents

Abstract

A dental composition is disclosed. The dental composition includes an unsaturated double bond compound comprising at least one selected from the group consisting of an oligomer of a monomer having an unsaturated double bond and a monomer having an unsaturated double bond; And fillers; Including, wherein the filler includes a first filler having a first average particle diameter and a second filler having a second average particle diameter, and the first average particle diameter is smaller than the second average particle diameter. And, it is possible to improve the mechanical properties of the tooth coating layer by increasing the content of the filler in a polydispersed state by introducing two or more types of fillers having different average particle diameters to the dental photopolymerization type surface coating composition.

Description

Dental coating composition and dental material including the same BACKGROUND OF THE INVENTION

The present invention relates to a dental composition, and more particularly, to a dental coating composition.

Materials such as inorganic materials, organic resin materials, and organic and inorganic composite materials are widely used in dental materials. Dental restoration materials are used as inlays, onlays, crowns, bridges, etc., and as filling materials, dental cement and dental resin materials are used. Since these materials are exposed in the oral cavity, the dental restoration material and the filling material are smoothed before being applied to the oral cavity to prevent coloration or contamination on the surface of the material. However, it takes a lot of time to make a smooth surface of the dental restoration material and the filling material, and since the dental restoration material and the filling material made of the smooth surface are used in various conditions in the oral cavity, there is a problem of coloration or contamination of the material due to surface deterioration. Is inevitable. In order to solve this problem, the surface of the dental material is smoothly polished, and then the surface of the dental material is coated with a material using a monomer composition capable of binding to the surface of the dental material to protect it.

Meanwhile, as a dental surface coating material, various composites have been proposed for monomers and photopolymerization initiators that can be used according to various light irradiation wavelength conditions. It consists of an oligomer capable of photopolymerization under ultraviolet wavelength conditions, a monomer capable of photopolymerization, and an ultraviolet reactive photopolymerization initiator, and is widely used as an acrylic hard coating technology.

In addition, a photopolymerization dental surface coating material composed of a monomer based on (meta) acrylate is used under visible light wavelength conditions. However, since oxygen in the air acts as a polymerization inhibitor, a non-polymerized (meth)acrylic monomer may remain on the surface of the cured photopolymerization dental surface coating material. There is a problem in that a non-uniform surface is formed on the surface, or if it is excessive, it is not cured and thus adhesiveness occurs.

Meanwhile, in order to solve the problems of the non-uniform surface and the uncured layer, the light-curing dental surface coating materials have solved the conditions of use and the problems that occur by improving the composition constituting the photo-curing dental surface coating material. However, when the composition is composed of only oligomers, monomer initiators, etc., as the composition is used under various conditions in the oral cavity, there is a problem of coloring and contamination of the material due to surface deterioration, and the durability of the dental surface coating material after curing is poor.

European Patent No. EP1532958B1

An object of the present invention is to solve the above problems, by introducing two or more types of fillers having different average particle diameters in a dental photopolymerization type surface coating composition to increase the content of fillers in a polydispersed state, thereby increasing the mechanical properties of the tooth coating layer. It is to provide a dental coating composition that can improve.

According to an aspect of the present invention, an unsaturated double bond compound comprising at least one selected from the group consisting of a monomer having an unsaturated double bond and an oligomer of a monomer having an unsaturated double bond; And fillers; Including,

The filler and a second filler having a first average particle size (average particle diameter, r ₁₎ a first filler and a second average particle size (average particle diameter, r ₂₎ having,

A dental composition may be provided in which the first average particle diameter is smaller than the second average particle diameter.

In addition, a ratio (r ₂ /r ₁ ) of the average particle diameter (r ₂ ) of the second filler to the average particle diameter (r ₁ ) of the first filler may be 5 to 300.

In addition, a ratio (r ₂ /r ₁ ) of the average particle diameter (r ₂ ) of the second filler to the average particle diameter (r ₁ ) of the first filler may be 10 to 100.

In addition, a ratio (r ₂ /r ₁ ) of the average particle diameter (r ₂ ) of the second filler to the average particle diameter (r ₁ ) of the first filler may be 20 to 30.

In addition, the filler may be a ratio (m ₂ / m ₁₎ is 0.1 to 3.0 of the first content of the second filler to the content (m ₁₎ of the filler (m _2).

In addition, the filler may be a ratio (m ₂ / m ₁₎ is 0.3 to 2.0 of the first content of the second filler to the content (m ₁₎ of the filler (m _2).

In addition, in the filler, a ratio (m ₂ /m ₁ ) of the content of the second filler (m ₂ ) to the content of the first filler (m ₁ ) may be 0.5 to 1.0.

In addition, the first filler may have an average particle diameter of 0.005 to 0.1 μm.

In addition, the first filler may have an average particle diameter of 0.01 to 0.05 μm.

In addition, the second filler may have an average particle diameter of 0.2 to 5 μm.

In addition, the second filler may have an average particle diameter of 0.2 to 1 μm.

In addition, the dental composition may include 5 to 60 parts by weight of the filler based on 100 parts by weight of the unsaturated double bond compound.

In addition, the dental composition may further include 0.01 to 5 parts by weight of the polymerization initiator.

In addition, the dental composition may further include 0.01 to 5 parts by weight of an antioxidant.

In addition, the antioxidant may include at least one selected from the group consisting of a phenol-based inhibitor and a phosphate-based inhibitor.

In addition, the dental composition may further include a third filler having an average particle diameter different from that of the first filler and the second filler.

In addition, the filler may include an inorganic filler or an organic filler.

In addition, the inorganic filler is synthetic amorphous silica, crystalline silica, barium silicate, barium borosilicate, barium fluoroaluminoborosilicate. ), barium aluminoborosilicate, strontium silicate, strontium borosilicate, strontium aluminoborosilicate, calcium silicate, and calcium silicate. (alumino silicate), silicon nitrides, titanium dioxide, calcium hydroxy apatite, zirconia, and at least one selected from the group consisting of bioactive glass. Can include.

In addition, the filler may include at least one selected from the group consisting of synthetic amorphous silica, crystalline silica, and zirconia.

In addition, the unsaturated double bond compound may include a methacrylate-based compound or an acrylate-based compound.

In addition, the compound having an unsaturated double bond is 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane (Bis-GMA), ethylene glycol dimethacrylate (EGDMA), Ethylene glycol diacrylate (EDGA), triethylene glycol dimethacrylate (TEGDMA), triethylene glycol diacrylate (TEGDA), ethoxylate bisphenol A dimethacrylate (Bis-EMA), urethane dimethacrylate (UDMA), polyurethane diacrylate (PUDA), dipentaerythritol pentaacrylate monophosphate (PENTA), 2-hydroxyethyl methacrylate (HEMA), polyalkeno One selected from the group consisting of polyalkenoic acid, biphenyl dimethacrylate (BPDM), biphenyl diacrylate BPDA, and glycerol phosphate dimethacrylate (GPDM) It may include more than one.

In addition, the dental composition may be used for coating teeth.

According to another aspect of the present invention, a dental material including the dental composition of the present invention may be provided.

According to the present invention, a dental coating composition capable of improving the mechanical properties of a tooth coating layer by increasing the content of the filler in a polydispersed state by introducing two or more types of fillers having different average particle diameters to the dental photopolymerizable surface coating composition is provided. Can provide.

The present invention is intended to illustrate specific embodiments and to be described in detail in the detailed description, since various transformations may be applied and various embodiments may be provided. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all conversions, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, when it is determined that a detailed description of a related known technology may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

In addition, terms including ordinal numbers such as first and second used below may be used to describe various constituent elements, but the constituent elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

In addition, when a component is referred to as being "formed" or "stacked" on another component, it may be formed or stacked by being directly attached to the front surface or one surface on the surface of the other component. It should be understood that there may be more other components in the.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the existence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features or It is to be understood that the presence or addition of numbers, steps, actions, components, parts, or combinations thereof does not preclude the possibility of preliminary exclusion.

Hereinafter, a method of manufacturing the dental composition of the present invention will be described.

The dental composition of the present invention includes an unsaturated double bond compound comprising at least one selected from the group consisting of a monomer having an unsaturated double bond and an oligomer of a monomer having an unsaturated double bond; And a filler; Including, the filler comprises a first filler having a first average particle diameter (average particle diameter) and a second filler having a second average particle diameter (average particle diameter), the first average particle diameter than the second average particle diameter It can be small.

Unsaturated double bond compound

The dental composition of the present invention may contain an unsaturated double bond compound. The unsaturated double bond compound in the present invention is not limited to the type as long as the monomer or monomer oligomer having an unsaturated double bond is a compound having two or more double bonds, and as a monomer or oligomer having a double bond, a methacrylate-based compound or An acrylate compound can be used.

Here, as the compound having the unsaturated double bond, 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane (Bis-GMA), ethylene glycol dimethacrylate (EGDMA), Ethylene glycol diacrylate (EDGA), triethylene glycol dimethacrylate (TEGDMA), triethylene glycol diacrylate (TEGDA), ethoxylate bisphenol A dimethacrylate (Bis-EMA), urethane dimethacrylate (UDMA), polyurethane diacrylate (PUDA), dipentaerythritol pentaacrylate monophosphate (PENTA), 2-hydroxyethyl methacrylate (HEMA), polyalkeno Ik acid (polyalkenoic acid), biphenyl dimethacrylate (BPDM), biphenyl diacrylate (biphenyl diacrylate BPDA) or glycerol phosphate dimethacrylate (glycerol phosphate dimethacrylate (GPDM) alone or two or more types) Can be used in combination.

filler

The dental composition of the present invention may include a filler. Here, the dental composition may include 5 to 60 parts by weight of the filler based on 100 parts by weight of the unsaturated double bond compound.

The filler may include a first filler having a first average particle diameter and a second filler having a second average particle diameter, and the first average particle diameter may be smaller than the second average particle diameter.

In addition, the ratio (r ₂ /r ₁ ) of the average particle diameter (r ₂ ) of the second filler to the average particle diameter (r ₁ ) of the first filler is 5 to 300, preferably 10 to 100, more preferably 20 to May be 30. Here, if the ratio (r ₂ /r ₁ ) of the average particle diameter (r ₂ ) of the second filler to the average particle diameter (r ₁ ) of the first filler is less than 5, the difference in the average particle diameter between the fillers is not large, so the viscosity of the mixed fillers It is not preferable because flow marks after coating are generated due to the rise, and if it exceeds 300, it is not preferable because large particles in the mixed filler roughen the surface after coating.

In addition, the filler ratio (m ₂ / m ₁₎ is 0.1 to 3.0, preferably 0.3 to 2.0, preferably from 0.5 than the content of the first filler content of the second filler to the (m ₁₎ (m ₂₎ To 1.0. Wherein the second amount of filler (m ₂₎ ratio (m ₂ / m ₁₎ of 0.1 is less than if the dispersing effect is decreased in mechanical properties due to the filler mixture of two kinds of the content (m ₁₎ of the first filler This decrease is not preferable, and even if it exceeds 3.0, it does not become a polydispersed state by the two types of fillers, and thus mechanical properties decrease, which is not preferable.

In addition, the dental composition may include 5 to 60 parts by weight of the filler based on 100 parts by weight of the unsaturated double bond compound.

In addition, the average particle diameter of the first filler having an average particle diameter smaller than that of the second filler may be 0.005 to 0.1 μm, preferably 0.01 to 0.05 μm, and if the average particle diameter of the first filler is less than 0.005 μm, the first filler Due to the increase in viscosity, flow marks are generated even after coating, which is not desirable.If it exceeds 0.1㎛, the difference in average particle diameter from the second filler is not large, so there is no difference in the average particle diameter, and thus the filler content cannot be increased, which is not preferable due to a decrease in mechanical properties. .

In addition, the average particle diameter of the second filler having an average particle diameter larger than that of the first filler may be 0.1 to 5 μm, preferably 0.2 to 1 μm, and if the average particle diameter of the second filler is less than 0.2 μm, the first filler and Since the difference in the average particle diameter of is not large, there is no difference in the average particle diameter, and thus the filler content cannot be increased, which is not preferable because the mechanical properties decrease, and when it exceeds 5 μm, large particles of the mixed filler roughen the surface after coating, which is not preferable.

In addition, the dental composition may further include a third filler having an average particle diameter different from that of the first filler and the second filler, respectively.

In addition, inorganic fillers or organic fillers may be used alone or in combination as the filler.

In addition, as the inorganic filler, synthetic amorphous silica, crystalline silica, barium silicate, barium borosilicate, barium fluoroaluminoborosilicate ), barium aluminoborosilicate, strontium silicate, strontium borosilicate, strontium aluminoborosilicate, calcium silicate, and calcium silicate. (alumino silicate), silicon nitrides, titanium dioxide, calcium hydroxy apatite, zirconia, or bioactive glass alone or in combination of two or more I can.

In addition, as the filler, synthetic amorphous silica, crystalline silica, or zirconia may be used alone or in combination of two or more.

Polymerization initiator

The dental composition may further contain 0.01 to 5 parts by weight of the polymerization initiator, preferably 0.01 to 3 parts by weight, more preferably 0.01 to 1 part by weight.

In the present invention, the photopolymerization method may be performed by ultraviolet polymerization or visible light polymerization, and in the case of ultraviolet polymerization, polymerization is possible with a photopolymerization initiator such as benzoinalkyl ether, and in the case of visible light polymerization, polymerization by a photopolymerization initiator such as campoquinone. This can be done. These photopolymerization initiators may be used alone or in combination of two. In addition, the content of the photopolymerization initiator should be adjusted within a range that does not affect the physical properties of the product while inducing a polymerization reaction.

If the content of the polymerization initiator is less than 0.01 parts by weight, there is a problem that photopolymerization initiation does not occur, and if it exceeds 5 parts by weight, the effect does not increase depending on the amount added and may adversely affect the physical properties of the composition, which is not preferable. .

Antioxidant

The dental composition of the present invention may further include 0.01 to 5 parts by weight of an antioxidant. In addition, as the antioxidant, a phenol-based inhibitor or a phosphate-based inhibitor may be used alone or in combination of two or more. Antioxidants are typically 2,6-di-tert-butyl-p-cresol (BHT, 2,6-di-tert-butyl-p-cresol), or 2,6-di-tert-butyl-4 Methyl phenol butylated hydroxy polluene can be used.

In addition, the dental composition of the present invention may contain conventional additives, including polymerization inhibitors, toning agents, fluorescent agents, and fluorine additives, and as pigments for color adjustment, iron oxide or titanium oxide exhibiting yellow, dark blue, and red color. The color can be adjusted by adding to the composition.

In addition, the dental composition may be used for coating teeth.

According to another aspect of the present invention, a dental material including the dental composition of the present invention may be provided.

[Example]

Preparation of dental composition

Example 1

As the dental composition according to the present invention, the monomer is 70 parts by weight of urethane dimethacrylate, the photoinitiator is 1 part by weight of camphorquinone, and the antioxidant is BHT (2,6-di-tert-butyl-p-cresol) 0.4 parts by weight Parts and fillers were prepared for dental compositions to include 15 parts by weight of silica having an average particle diameter of 0.02 μm and 13.6 parts by weight of silica having an average particle diameter of 0.5 μm.

Inclusions Furtherance Content (parts by weight) Example 1 UDMA (urethane dimethacrylate) 70 Camperquinone One BHT(2,6-di-tert-butyl-p-cresol) 0.4 Silica (average particle diameter 0.02㎛) 15 Silica (average particle diameter 0.5㎛) 13.6 Example 2 UDMA (urethane dimethacrylate) 90 Camperquinone One BHT(2,6-di-tert-butyl-p-cresol) 0.4 Silica (average particle diameter 0.02㎛) 6 Silica (average particle diameter 0.5㎛) 4 Example 3 UDMA (urethane dimethacrylate) 30 MMA (methyl methacrylate) 40 Camperquinone One BHT(2,6-di-tert-butyl-p-cresol) 0.4 Silica (average particle diameter 0.02㎛) 15 Silica (average particle diameter 0.5㎛) 13.6 Comparative Example 1 UDMA (urethane dimethacrylate) 70 Camperquinone One BHT(2,6-di-tert-butyl-p-cresol) 0.4 Silica (average particle diameter 0.02㎛) 28.6 Silica (average particle diameter 0.5㎛) 0 Comparative Example 2 UDMA (urethane dimethacrylate) 70 Camperquinone One BHT(2,6-di-tert-butyl-p-cresol) 0.4 Silica (average particle diameter 0.02㎛) 0 Silica (average particle diameter 0.5㎛) 28.6 Comparative Example 3 UDMA (urethane dimethacrylate) 70 Camperquinone One BHT(2,6-di-tert-butyl-p-cresol) 0.4 Silica (average particle diameter 0.02㎛) 5 Silica (average particle diameter 10㎛) 23.6

Example 2

The monomer is 90 parts by weight of urethane dimethacrylate, the photoinitiator is 1 part by weight of camphorquinone, the antioxidant is 0.4 parts by weight of BHT (2,6-di-tert-butyl-p-cresol), and the filler has an average particle diameter of 0.02㎛. A dental composition was prepared to include 6 parts by weight of silica and 4 parts by weight of silica having an average particle diameter of 0.5 μm.

Example 3

The monomer is urethane dimethacrylate 30 parts by weight and methyl methacrylate 40 parts by weight, the photoinitiator is camphorquinone 1 part by weight, the antioxidant is BHT (2,6-di-tert-butyl-p-cresol) 0.4 parts by weight , As the filler, a dental composition was prepared to include 6 parts by weight of silica having an average particle diameter of 0.02 μm and 4 parts by weight of silica having an average particle diameter of 0.5 μm.

Comparative Example 1

The monomer is 70 parts by weight of urethane dimethacrylate, the photoinitiator is 1 part by weight of camphorquinone, the antioxidant is 0.4 parts by weight of BHT (2,6-di-tert-butyl-p-cresol), and the filler has an average particle diameter of 0.02㎛. A dental composition was prepared to contain 28.6 parts by weight of silica.

Comparative Example 2

The monomer is 70 parts by weight of urethane dimethacrylate, the photoinitiator is 1 part by weight of camphorquinone, the antioxidant is 0.4 parts by weight of BHT (2,6-di-tert-butyl-p-cresol), and the filler has an average particle diameter of 0.5 µm. A dental composition was prepared to contain 28.6 parts by weight of silica.

Comparative Example 3

The monomer is 70 parts by weight of urethane dimethacrylate, the photoinitiator is 1 part by weight of camphorquinone, the antioxidant is 0.4 parts by weight of BHT (2,6-di-tert-butyl-p-cresol), and the filler has an average particle diameter of 0.02㎛. A dental composition was prepared to include 5 parts by weight of silica and 23.6 parts by weight of silica having an average particle diameter of 10 μm.

[Test Example]

Test Example 1: Measurement of uncured

For Examples 1 to 3 and Comparative Examples 1 to 3, the coating thickness was made to be 0.05 mm, irradiated with UV light (wavelength 400 nm) at room temperature for 5 minutes to cure, and then the surface condition after the curing reaction at the same time. It was compared whether or not uncured.

Test Example 2: Hardness measurement

After curing the above Examples 1 to 3 and Comparative Examples 1 to 3 in the same manner as in Test Example 1, a pyramid-shaped diamond indenter having a face angle of 136° was slightly applied to the surface of the material, and the load was After maintaining and removing the load for 10 seconds at 490.3mN, the indentation marks _{were measured in lengths of horizontal (d 1} ) and vertical (d ₂ ), and the hardness was calculated through Equation 1 below and compared to Table 2 below.

[Equation 1]

HV: Surface hardness (N/mm ² )

F: load

d: arithmetic mean of the diagonal lengths of diamond indentations (d ₁ , d ₂ ) (mm)

Hardening Hardness (0.05HV, 10sec) Example 1 Ο 46.8 Example 2 Ο 45.2 Example 3 Ο 48.3 Comparative Example 1 Ο 37.6 Comparative Example 2 Ο 36.2 Comparative Example 3 Δ 35.3

Ο: hardened, Δ: partially uncured

Referring to Table 2, as a result of confirming the uncured after curing for the same time for the dental compositions according to Examples 1 to 3 and Comparative Examples 1 to 3, the compositions of Examples 1 to 3 and Comparative Examples 1 to 2 Although the paint was not confirmed, in Comparative Example 3, some uncured was confirmed. This appeared to be caused by mixing of fillers with a large particle size and interfering with curing.

Meanwhile, the hardness values identified in the compositions of Examples 1 to 3 were higher than those of Comparative Examples 1 to 3. It was found that the mechanical properties increased as the filling density increased as different size fillers were mixed, and when one filler type or fillers of a certain size or larger were mixed in excess, the filling density was relatively low, and the hardness value appeared to be low.

The scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

Claims (17)

An unsaturated double bond compound containing at least one selected from the group consisting of a monomer having an unsaturated double bond and an oligomer of a monomer having an unsaturated double bond; And
Including a filler;
The filler and a second filler having a first average particle size (average particle diameter, r ₁₎ a first filler and a second average particle size (average particle diameter, r ₂₎ having,
The first average particle diameter is smaller than the second average particle diameter,
The ratio (r ₂ /r ₁ ) of the average particle diameter (r ₂ ) of the second filler to the average particle diameter (r ₁ ) of the first filler is 10 to 100,
The second filler has an average particle diameter of 0.2 to 5 μm,
The compound having the unsaturated double bond is 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane (Bis-GMA), ethylene glycol dimethacrylate (EGDMA), ethylene Glycol diacrylate (EDGA), triethylene glycol dimethacrylate (TEGDMA), triethylene glycol diacrylate (TEGDA), ethoxylate bisphenol A dimethacrylate (Bis-EMA), urethane dimethacrylate ( UDMA), polyurethane diacrylate (PUDA), dipentaerythritol pentaacrylate monophosphate (PENTA), 2-hydroxyethyl methacrylate (HEMA), polyalkenoic acid (polyalkenoic acid), biphenyl dimethacrylate (BPDM), biphenyl diacrylate (biphenyl diacrylate BPDA) and glycerol phosphate dimethacrylate (glycerol phosphate dimethacrylate, GPDM) at least one selected from the group consisting of Including,
The filler is synthetic amorphous silica, crystalline silica, barium silicate, barium borosilicate, barium fluoroaluminoborosilicate, Barium aluminoborosilicate, strontium silicate, strontium borosilicate, strontium aluminoborosilicate, calcium silicate, and calcium silicate. silicate), silicon nitrides, titanium dioxide, calcium hydroxy apatite, zirconia, and bioactive glass. The dental composition. delete delete The method of claim 1,
A dental composition, characterized in that the ratio (r ₂ /r ₁ ) of the average particle diameter (r ₂ ) of the second filler to the average particle diameter (r _{1) of the first filler is 20 to 30.} The method of claim 1,
The filler is a dental composition, characterized in that the ratio (m ₂ / m ₁₎ is 0.1 to 3.0 of the second amount of filler (m ₂₎ for the amount (m ₁₎ of the first pillar. The method of claim 5,
The filler is a dental composition, characterized in that the ratio (m ₂ / m ₁₎ is 0.3 to 2.0 of the second amount of filler (m ₂₎ for the amount (m ₁₎ of the first pillar. The method of claim 6,
The filler is a dental composition, characterized in that the ratio (m ₂ / m ₁₎ is 0.5 to 1.0 of the second amount of filler (m ₂₎ for the amount (m ₁₎ of the first pillar. The method of claim 1,
Dental composition, characterized in that the average particle diameter of the first filler is 0.005 to 0.1㎛. The method of claim 8,
Dental composition, characterized in that the average particle diameter of the first filler is 0.01 to 0.05㎛. delete The method of claim 1,
Dental composition, characterized in that the average particle diameter of the second filler is 0.2 to 1㎛. The method of claim 1,
The dental composition further comprises a polymerization initiator,
100 parts by weight of the unsaturated double bond compound;
5 to 60 parts by weight of the filler; And
Dental composition comprising 0.01 to 5 parts by weight of the polymerization initiator. The method of claim 1
The dental composition further comprises a third filler having an average particle diameter different from that of the first filler and the second filler, respectively. The method of claim 1
Dental composition, characterized in that the filler comprises silica. The method of claim 1,
The compound having an unsaturated double bond is a dental composition comprising urethane dimethacrylate (UDMA). The method of claim 1,
Dental composition, characterized in that the dental composition is used for the coating of teeth. Dental material comprising the dental composition according to claim 1.