WO2014178447A1 - Dental impression material having improved mechanical properties - Google Patents

Abstract

The present invention relates to a dental impression material composition, and provides a dental impression material composition having improved mechanical properties and containing organopolysiloxane, a hardener, a hardening retarder, a filler, a cross-linking agent, and a surfactant, wherein the filler is of a mixed type including a spherical filler and an irregular-shaped filler.

Description

 Dental impression material with improved mechanical properties

 The present invention relates to a dental impression material with improved mechanical properties, more specifically, it comprises an organopolysiloxane, a curing agent, a curing retardant, a filler (filler), a crosslinking agent and a surfactant, the filler is spherical It relates to a dental impression material composition, characterized in that the filler is a mixed form of the corrugated filler.

 In general, dental impression material is a material used to 'pattern', ie, replicate the oral tissue in the oral cavity, which requires very precise and meticulous work. In addition, safety is important above all because it is a substance to enter the patient's mouth.

 These impression materials can accurately replicate teeth or tissue, have no unpleasant taste, odor, toxicity, irritation and allergic reactions, have moderate flow and elasticity, are stable and do not change size, and are torn when removed from the oral cavity. It has sufficient mechanical strength to resist permanent deformation, no size change or physical change after disinfection, good affinity with model materials, sufficient working time, easy storage and not deterioration. Needs a requirement.

 Such dental impression materials can be broadly classified into elastic impression materials, inelastic impression materials, and reversible and irreversible impression materials. Among them, the elastic impression material is effective in acquiring the impression of teeth or teeth because the oral cavity or the recessed portion can be accurately reproduced in its original form.

 In addition, such elastic impression materials are mainly classified into hydrocolloid impression materials and rubber impression materials. Such hydrocolloid impression material has sufficient strength and elastic deformation, but since most of the volume is water, it shrinks when water is lost and expands when water is supplied, which affects the size safety of the impression material. On the other hand, the rubber impression material is a precision impression material having excellent elasticity made of synthetic rubber, and is used most frequently because of relatively stable volume change.

 In addition, the rubber impression material may be classified into polysulfide, polyether, condensation silicone, and polyvinyl siloxane according to chemical composition.

 Among these, the addition-polymerization silicone rubber impression material is a material developed to solve the shrinkage of the condensation-polymerization silicone, is odorless, easy to mix, does not color on clothing, and the working time and the curing time are about 6 to 8 minutes. It is short, can delay the polymerization reaction, can use the retardant, has low tear resistance but very little permanent deformation. In addition, the addition polymerization type silicone has excellent size stability, so that a duplicate model can be obtained several times in the same impression after making the plaster model.In the case of hydrophilic addition polymerization silicon, it is possible to obtain a precise impression even if the abutment has moisture. It can flow in and prevents the inflow of bubbles.

 Meanwhile, the rubber impression material may be classified into a light body, a regular body, a heavy body, and a putty body according to the consistency of the store. Among these, the light body is used for abutment injection, and the regular body has a medium fluidity, so it can be used as a monophase or single viscosity technique. Typical examples of regular bodies include polyethers and addition polymerized silicones. These materials have pseudoplastic properties, i.e., the more shear stress is applied to the material, the more flowable it is. You can take advantage of the improved nature. This regular body impression material is mixed in a conventional manner, and then a portion is put in a tray, a part is put in a syringe and injected into the preparation, and the impression material is pulled out of the syringe tip. When it comes out, it receives a lot of shear stress, the flowability is much increased than when all the impression material composition in the tray can be flowed well to the fine portion of the preparation teeth, it is easy to obtain a precise impression.

 In addition, since the high viscosity (heavy body) is high density and viscosity can not be precise impression acquisition only by the high viscosity impression material composition, it is mainly used as a tray material, putty (putty body) is the dough material of the highest density, This is also used for trays.

 Such rubber impression materials can be produced by mixing impression materials with different store owners. Generally, the final impression is obtained by combining two store owner impression materials, while the low store owners are used for injecting abutment into a syringe. Larger store occupants are placed in a tray and covered with a syringe material, or used to obtain a double phase.

 On the other hand, the addition polymerization type polyvinylsiloxane impression material, which is showing the most development among rubber impression materials, has excellent elastic recovery rate, tear strength, creep characteristics and dimensional stability, high precision, and small size change after curing. It has the advantage of excellent elastic recovery due to short working time and hardening time. However, there is a disadvantage that the price is relatively expensive, and it is very rigid (rigid), so it is difficult to obtain the impression of the depression.

 In this regard, US Patent Nos. 5,661,222, 5,955,513, and 5,830,951 use a VQM resin having a vinyl group content of 0.16 to 0.24 mmole / g or a VQM resin in order to solve this problem. Techniques for increasing the tensile strength have been proposed. However, when using VQM resin of at least 20% by weight, there is a problem that the economic burden on the consumer can be increased.

 In addition, EP 1 475 069 proposes an impression material having improved tensile strength by using a silane-treated chain extender and various organopolysiloxane mixtures. However, the impression material of the European registered patent shows 55 to 60 mm larger than the point viscosity value (41 to 48 mm) of the light body having the lowest viscosity, so that the viscosity is too low to be used as a commercial impression material. There is this.

 As noted above, dental impression materials must meet a variety of physical properties and require the use of inexpensive materials. In particular, during the process of extracting impression material from the patient's mouth, the patient may complain when the elasticity is insufficient, and when the tear strength and tensile strength are low, the impression material is easily torn, thus making a precise impression. The difficulties of production are still not solved.

 Therefore, there is a very high need for a technology that can solve the above problems.

 Accordingly, an object of the present invention is to solve the problems of the prior art as described above and the technical problem that has been requested from the past.

 Specifically, the inventors of the present application, after in-depth study and various experiments, when including the spherical filler and corrugated filler in the dental silicone impression material composition, it confirmed that it has excellent mechanical properties such as high elongation, high tear The present invention has been completed.

 Accordingly, the dental impression material composition according to the present invention includes an organopolysiloxane, a curing agent, a curing retardant, a filler, a crosslinking agent, and a surfactant, and the filler includes a spherical filler and a wavy shape ( It is characterized by the mixed form of a 필 形 filler.

 The corrugated filler means an irregularly shaped filler having various shapes such as a needle shape, a thin columnar shape, a finely divided shape, or a shape in which a plate glass is broken.

 In addition, the spherical filler refers to a filler in the form of a plurality of grains of beads or oval shape.

 Generally, addition-polymer type silicone impression material which does not contain a filler has weak mechanical properties. Therefore, the dental impression material composition according to the present invention includes a filler to enhance mechanical strength while having a suitable point viscosity, such a filler is included in a mixed form of a spherical filler and a corrugated filler, thereby tearing and tensile strength Can provide increased impression material.

 In one specific example, the organopolysiloxane may be an organopolysiloxane including a vinyl group, and generally, the rubber impression material includes the vinyl group because it is advantageous to prepare a mixture of low viscosity and high viscosity to control physical properties of the impression material. The organopolysiloxane is an organopolysiloxane monomer having a viscosity of 100 to 1,000 cPs at 25 ° C. and a vinyl group content of 0.11 to 0.40 mmole / g; Organopolysiloxane monomers having a viscosity of 1,000 to 10,000 cPs and a vinyl group content of 0.05 to 0.11 mmole / g at 25 ° C .; An organopolysiloxane monomer having a viscosity of 10,000 to 100,000 cPs at 25 ° C. and a vinyl group content of 0.02 to 0.05 mmole / g; and a polymer made of at least one monomer selected from the group consisting of, wherein the polymer is the total weight of the impression material composition It may be included in 20 to 80% by weight based on.

 In one specific example, the organopolysiloxane has at least two aliphatic unsaturated hydrocarbon groups in one molecule, a first organopolysiloxane having a viscosity of 10,000 to 100,000 cPs at 25 ° C., and at least two aliphatic unsaturated hydrocarbon groups in one molecule. A second organopolysiloxane having a viscosity of 1,000 to 10,000 cPs at 25 ° C., and a third organopolysiloxane having at least one aliphatic unsaturated hydrocarbon group at one molecule, and having a viscosity of 100 to 1,000 cPs at 25 ° C. It may be a mixture of two or more selected.

 The first organopolysiloxane exhibits a putty phase at room temperature, the second organopolysiloxane exhibits a pasty phase in solution state at high viscosity at room temperature, and the first and second organopolysiloxanes may have a degree of polymerization of 2,000 or more. have. In addition, the first and second organopolysiloxanes may have a molecular chain terminal blocked with a vinyl silyl group. In this case, the molecular chain may have a plurality of terminal vinyl groups, and the vinyl group may be included in the molecular chain. Can be. In addition, the aliphatic unsaturated hydrocarbon may include a plurality of terminal vinyl groups, or may include a vinyl group in the molecular chain. In addition, the molecular chain of the organopolysiloxane may be an alkyl group, a phenyl group, or a toryl group, more specifically, may be a methyl group, an ethyl group, or a phenyl group.

 The third organopolysiloxane is a liquid having a lower viscosity at 25 ° C. compared to the first and second organopolysiloxanes, and like the first and second organopolysiloxanes, the molecular chain ends may be sealed with vinyl silyl groups. In this case, the molecular chain may have a plurality of terminal vinyl groups, and the vinyl group may be included in the molecular chain. In addition, the aliphatic unsaturated hydrocarbon may include a plurality of terminal vinyl groups, or may include a vinyl group in the molecular chain. In addition, the molecular chain of the organopolysiloxane may be an alkyl group, a phenyl group, or a tolyl group, more specifically, may be a methyl group, an ethyl group, or a phenyl group.

 In order to obtain the mechanical properties of the appropriate impression material required by the present invention, the mixture has a content ratio (weight ratio) of the first organopolysiloxane and the second organopolysiloxane of 0.1: 10 to 10: 0.1, or the first organopolysiloxane. And a content ratio of the content of the second organopolysiloxane to the content of the third organopolysiloxane may be 0.1: 10 to 10:10.

 The impression material composition is a high viscosity (heavy body) impression material that may have a suitable point viscosity according to the use, such as for abutment injection or tray, in one specific example, the impression material composition has a consistency (consistency) of 30 to 45 can be mm. Specifically, when the viscosity of the impression material composition exceeds 45 mm, the mechanical strength of the impression material may be weak because the viscosity is low to use as the impression material, the impression material may be easily torn when removing the impression material. On the other hand, if it is less than 30 mm the viscosity is too high it may be difficult for the impression material to penetrate into the fine portion of the depression.

 The filler is included to improve workability before curing or mechanical properties after curing of the dental silicone impression material composition. Specifically, the filler may be an inorganic filler, or an organic filler, or a mixture of inorganic fillers and organic fillers.

 The inorganic filler can be, for example, cristobalite, crystalline natural silica, barium aluminum silicate, kaolin, talc, strontium aluminum silicate, glass, barium silicate Glass, strontium silicate glass, borate aluminum silicate glass, phosphate aluminum silicate glass, fluorine aluminosilicate, glass bead, calcium silicate, silicate Zeolites including zirconium, sodium aluminum silicate, silicate layers, ceramic microspheres, aluminum trihydrate (ATH), and calcium carbonate, bentonite, molecular sieve , Alkali metals, alkaline earth metals, oxides, hydroxides, apatas Bit (apatide), it may be at least one selected from the group consisting of a charged polymer chip, spherical fillers, acid-reactive filler, and nano-zirconia filler.

 The filler may be included in 20 to 90% by weight based on the total weight of the impression material composition, more preferably, 20 to 70 based on the total weight of the impression material composition, in order to have the appropriate viscosity and excellent mechanical strength required by the present application It may be included in weight percent.

 Specifically, when the filler is included in less than 20% by weight, the fluidity of the softener before curing can be too large, it is difficult to exhibit sufficient physical properties of the impression material required in the present invention. On the other hand, when the filler exceeds 90% by weight, the viscosity of the softener before curing may be too high, making it difficult to perform the softening operation.

In one specific example, the filler may have an average particle size of at least 0.1 μm and less than 50 μm. More specifically, the corrugated filler may have an average particle length of 1 μm or more and less than 14 μm and a specific surface area of 1 to 20 m ² / g. The spherical filler may have an average particle diameter of 1 μm or more and less than 10 μm, and a specific surface area of 1-10 m ² / g.

 The filler increases tear strength by using with a spherical filler than when only a corrugated filler is used. Preferably, the corrugated filler and the spherical filler can be mixed in a content ratio (weight ratio) of 1:19 to 19: 1, more preferably in a content ratio of 1: 9 to 9 :: 1, particularly preferably 1: It may be mixed in a content ratio of 4 to 4: 1.

 In one specific example, the impression material composition may further include amorphous synthetic silica as a dry reinforcing filler. Specifically, the amorphous synthetic silica may be selected from the group consisting of at least fumed silica, silica gel, precipitated silica, silica sol, and silicon acid.

More specifically, the amorphous synthetic silica may be fumed silica having an average particle size of 10 to 100 nm and a specific surface area of 200 to 300 m ² / g, wherein the fumed silica is 10 to 70% by weight of the total dispersion. In the form of a dispersion dispersed in polyvinylsiloxane (polyvinylsiloxane) may be included in the total impression material composition 10 to 50% by weight.

 The fumed silica forms three-dimensional structural bonds, and when shear force is applied, the mutual bonding of the silica molecules is easily broken, and the fumed silica has a thixotropy property that changes to a liquid sol-like form. When injecting the composition comprising a injection using a gun (gun) there is an advantage that the flow is improved and easy to use.

 In one specific example, the impression material composition may further include a QM resin (quadri-functional polysiloxane) to improve the mechanical properties, the QM resin has a viscosity of 6,000 to 10,000 cPs, the vinyl group content of 0.20 to 0.21 mmol / g. The QM resin is advantageous in controlling the physical properties of the impression material because the width of the viscosity change of the impression material is not large compared to the organopolysiloxane.

 The surfactant is a nonionic surfactant, sodium lauryl sulfate, monoglyceride sulfate, sodium lauryl sarcosinate, sucrose fatty acid ester, laurin It comprises at least one selected from the group consisting of acid diethanolamide (lauric acid diethanolamide), cured castor oil, polyoxyethylene, trisiloxane ethoxylate, fluorine-based surfactant, The surface tension may be 10 to 30 N / m.

 The curing agent may serve as a catalyst for crosslinking polymerization, and may be, for example, a platinum catalyst such as a complex of chloroplatinic acid, alcohol-modified platinum chloride, chloroplatinic acid and olefin, and more preferably, the curing agent is platinum-di It may be a vinyl tetramethyl disiloxane complex (platinum-divinyltetramethyldisiloxane complex). Specifically, the curing agent may be in a form in which the platinum-divinyltetramethyldisiloxane complex is dispersed in polydimethylsiloxane at 0.05 to 5% by weight based on the total weight of the dispersion. In addition, the curing agent may be included in 0.05 to 5% by weight based on the total weight of the impression material composition.

 If the curing agent is less than 0.05% by weight, the curing rate may be slow, and the curing may be further slowed when a small amount of a substance that inhibits the catalytic ability of the platinum catalyst is present. On the other hand, when the curing agent exceeds 5% by weight, not only the curing rate is too fast, but also the manufacturing cost may increase.

 The curing retardant is used to ensure sufficient working time, preferably 1,3,5,7-tetravinyl tetramethyl having a viscosity of 4 to 500 cPs, and a vinyl group content of 1.5 to 15 mmole / g It may be cyclotetrasiloxane (1,3,5,7-tetravinyltetramethylcyclotetrasilonxane), the curing retardant may be included in 0.1 to 10% by weight based on the total weight of the impression material composition.

In one specific example, the crosslinking agent may be an organopolysiloxane including a hydrogen group at the molecular chain terminal, and in detail, the organopolysiloxane including the hydrogen group is substituted with a C ₁ -C ₃ alkyl group at one molecular terminal. Organo hydrogen polysiloxane containing silicon, and the organohydrogenpolysiloxane may be included in the base paste.

The organohydrogenpolysiloxane may serve as a crosslinking material of the mixture of the organopolysiloxane including the vinyl group, and silicon substituted with the C ₁ -C ₃ alkyl group may be present at the molecular chain terminal or side chain, preferably It may be present at both ends of the molecular chain.

 In addition, the organohydrogenpolysiloxane may be polymethylhydrosiloxane; Or methylhydro-dimethylsilonic acid having a viscosity of 2 to 10,000 cPs and a Si-H content of the terminal group of 0.01 to 5.5 mmol / g; Or copolymers of polymethylhydrosiloxane and methylhydro-dimethylsilonic acid (methyl hydro methyl siloxane copolymer); Or a mixture of polymethylhydrosiloxane and methylhydro-dimethylsilonic acid. The organohydrogenpolysiloxane may be used as a crosslinking agent in an addition reaction using a organopolysiloxane including a vinyl group and a curing agent.

 In one specific example, the crosslinking agent may be included in 1 to 10% by weight based on the total weight of the impression material composition.

 The dental impression material composition may be an addition polymerization type two-component paste in which a base paste and a catalyst paste are mixed, and the content ratio (weight ratio) of the base paste and the catalyst paste is 0.1. : 1 to 1: 0.1 may be.

In the impression material of the present invention, when removing the impression material after making the impression, the tear strength is 10 to 18 N / mm, the tensile strength may be 1 to 6 N / mm ² to minimize the discomfort of the patient. If the tensile strength is greater than 6 N / mm ² , the patient may complain pain when the impression material is extracted, and if the tensile strength is less than 1 N / mm ² , the impression material may be easily torn.

 In addition, in addition to the raw materials used above, plasticizers, pigments, flavors, viscosity regulators, etc. may be further added to the impression material in order to meet the desired physical properties of the manufacturer.

 Hereinafter, the present invention will be described in more detail with reference to Examples, but the following Examples are provided to illustrate the present invention, and the scope of the present invention is not limited thereto.

<Manufacture example 1>

QM resin

 A QM resin of Formula 1 was prepared having a viscosity of 10,000 cPs and a vinyl group content of 0.20 mmol / g.

(One)

<Manufacture example 2>

Polydimethylsiloxane Substituted by Vinyl Group

 Polydimethylsiloxane of the following Chemical Formula 2 was prepared in which the total vinyl group content was 0.02 to 0.04 mmol / g, 0.06 to 0.11 mmol / g, and 0.14 to 0.4 mmol / g, and both ends of the molecule were substituted with vinyl groups.

(2)

 Wherein m is from 1 to 50.

Table 1

<Example 1>

 The composition of the base paste and the catalyst paste including the polydimethylsiloxane substituted with the QM resin and the vinyl group prepared in Preparation Examples 1 and 2, respectively, is shown in Table 2 below. The base paste and the catalyst paste were mixed at 20 ° C. using a mixer to prepare a dental impression material composition.

 The mixing order was mixed in the order of fumed silica dispersion, QM resin, polydimethylsiloxane substituted with a vinyl group, corrugated filler, spherical filler, crosslinking agent, curing agent, dye, curing retardant, and surfactant.

 The polydimethylsiloxane substituted with a vinyl group is a polymer having a viscosity of 100 cPs, a polymer having a vinyl group content of 0.40 mmol / g, a polymer having a viscosity of 100,000 cPs, a polymer having a vinyl group content of 0.02 mmol / g, a polymer having a viscosity of 1,000 cPs and a vinyl group content of 0.11 mmol / g. (Polymer VS 100, Polymer VS 1,000, Polymer VS 100,000) were used, respectively.

 As the crosslinking agent, a methylhydro-dimethylsilonic acid copolymer (Crosslinker 210) having a viscosity of 40 mPas represented by Formula 3 and a 4.2 mmol / g Si-H content was used.

(3)

 In Formula (3), m or n is 1-50.

 As the curing agent, a platinum-divinyltetramethyldisiloxane complex in which 0.5% by weight of the platinum-divinyltetramethyldisiloxane complex was dispersed in polydimethylsiloxane (Evonik Industries: Catalyst 510) was used.

 As the curing retardant, 1,3,5,7-tetravinyltetramethylcyclotetrasiloxane (1,3,5,7-tetravinyltetramethylcyclotetrasilonxae) was used.

TABLE 2

<Example 2>

 An impression material composition was prepared in the same manner as in Example 1, except that the mixing weight ratio of the corrugated filler to the spherical filler was changed to 20:80 in Example 1.

<Example 3>

 An impression material composition was prepared in the same manner as in Example 1, except that the particle size of the corrugated filler in Example 1 was 14 μm.

<Example 4>

 The impression material composition was prepared in the same manner as in Example 1, except that the particle size of the corrugated filler in Example 1 was 3 μm.

Comparative Example 1

 An impression material composition was prepared in the same manner as in Example 1, except that the mixing weight ratio of the corrugated filler to the spherical filler was 100: 0 in Example 1.

Comparative Example 2

 The impression material composition was prepared in the same manner as in Example 1 except that the mixing weight ratio of the corrugated filler: spherical filler was 100: 0 and the average particle size of the corrugated filler was 14 µm.

Comparative Example 3

 An impression material composition was prepared in the same manner as in Example 1 except that the size of the spherical filler particles was 10 μm.

<Comparative Example 4>

 An impression material composition was prepared in the same manner as in Example 1, except that the particle size of the spherical filler was 10 μm and the ratio of the corrugated filler to the spherical filler was 20:80.

Experimental Example 1

 After degassing each of the base paste and the catalyst paste prepared in Examples 1 to 4 and Comparative Examples 1 to 4, respectively, each paste was filled in a dual type syringe, and the dual type After the tip is combined with the syringe, the gun is mounted on the gun, and the trigger of the gun is pulled to mix and inject the base paste and the catalyst paste at a ratio of 1: 1 using the tip, and the mixed paste is cured for a predetermined time. An impression material sample was produced. The following tests were performed to measure the mechanical properties of the impression material samples, and the results are shown in Table 3 below.

(Hardening time measurement)

The impression material composition was placed in a separable metal mold having an internal diameter (12.5 ± 0.05) mm and a height (20 ± 0.2) mm, and the time until appropriate curing at (35 ± 1) ° C. was measured. At the end of hardening, after removing the specimen from the mold and placing it on the compressive strain gauge, adjust the dial gauge scale to zero (H ₁ = 0), and after 60 seconds, apply the total stress to 12.25 N after 15 seconds. After 30 seconds in total, the scale (H ₂ ) was read. The curing time was calculated by substituting the measured values into the following equation.

100% × (1-[(H ₁ -H ₂ ) / D]) = P (%)

In the above formula, (H ₁ -H ₂ ) means the scale on the last gauge, D is the height of the specimen 20 mm, and the time when the results of all three times the results of P repeated more than 99% was set as the curing time .

(Viscosity measurement)

 The measurement of the point viscosity was carried out by raising 0.5 ml of mixed impression materials on the polyethylene film on a glass plate, and then covering it with the other glass plate. After applying a load of 14.7 N for 5 seconds, it was cured at room temperature for 15 minutes, and the average was calculated by measuring the diameters of the long and short axes. Three measurements were made for each group, and the results were calculated.

(Strain recovery rate measurement)

 The recovery rate test was conducted according to the rubber impression standard ISO 4823: 2000 (Dentistry-Elastomeric impression materials). Specimens were fabricated in the same manner as the compressive strain test and placed on an instrument to measure strain recovery. The instrument was operated to deform the specimen to 6 mm, allowed to relax for 110 seconds after the load was removed, and the scale was recorded. Five specimens were produced for each group and tested.

(Tensile strength measurement)

 Tensile tests were measured according to ASTM D1238 (Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer).

(Tear strength measurement method)

 Tear strength indicates the energy required to tear a certain length and was measured according to ASTM D1938 (Standard Test Method for Tear-Propagation Resistance (Trouser Tear) of Plastic Film and Thin Sheeting by a Single-Tear Method).

TABLE 3

 Comparing the result values of the tear strengths of Examples 1 to 3 and Comparative Examples 1 and 2 of Table 3, the tearing strength was increased when the spherical filler and the corrugated filler were used together than when only the corrugated filler was used. You can check it.

 In addition, when comparing the tear strength values of Examples 1 and 2 with Comparative Examples 3 and 4, when a 5 μm particle size corrugated filler was used, the particle size of the spherical filler was 10 μm than that of 3 μm. At this time, it can be seen that the tear strength and tensile strength are smaller. Therefore, when using the filler of the same weight, it was confirmed that the use of the spherical filler having a particle size of less than 10 ㎛ having a higher tear strength and tensile strength.

 In comparison with Examples 1, 3, and 4, the tear strength and tensile strength were the highest when the size of the corrugated filler was 14 µm under the same content ratio of the spherical filler and the corrugated filler and the particle size of the spherical filler. You can see that it is low. Therefore, when the particle size of the corrugated filler is 3 µm or more and less than 14 µm, higher mechanical strength can be exhibited.

 In addition, when comparing the Examples 1 and 2, it can be seen that the tear strength and tensile strength is higher when the content ratio is 20:80 than the content ratio of the corrugated filler: spherical filler is 80: 20. However, when the particle size of the spherical filler is 10 μm as in the results of Comparative Examples 3 and 4, it can be seen that the tensile strength of Comparative Example 4 having a content ratio of corrugated filler: spherical filler of 20:80 is lower.

 In summary, the dental impression material composition according to the present invention uses a form in which the corrugated filler and the spherical filler are mixed, the average particle size of the spherical filler is 3 μm, and the particle size of the corrugated filler is 3 μm or more. It was confirmed that it had the best mechanical properties when the mixed weight ratio of the wave filler and the spherical filler was less than 14 μm and was 20:80.

 Those skilled in the art to which the present invention pertains will be able to perform various applications and modifications within the scope of the present invention based on the above contents.

 As described above, the dental silicone impression material composition according to the present invention includes the spherical filler and the corrugated filler at the same time, it is possible to manufacture the impression material having excellent mechanical strength by high tear strength and tensile strength.

Claims (19)

1.  A dental silicone impression material composition comprising an organopolysiloxane, a curing agent, a curing retardant, a filler, a crosslinking agent, and a surfactant, wherein the filler is a spherical filler and a wavy filler. Dental impression material composition, characterized in that the mixed form of.
2.  The method of claim 1, wherein the organopolysiloxane is an organopolysiloxane containing a vinyl group,

    Organopolysiloxane monomers having a viscosity of 100 to 1,000 cPs and a vinyl group content of 0.11 to 0.40 mmole / g at 25 ° C .;

    Organopolysiloxane monomers having a viscosity of 1,000 to 10,000 cPs and a vinyl group content of 0.05 to 0.11 mmole / g at 25 ° C .;

    Organopolysiloxane monomers having a viscosity of 10,000 to 100,000 cPs and a vinyl group content of 0.02 to 0.05 mmole / g at 25 ° C .;

   A polymer made of at least one monomer selected from the group consisting of, the impression material composition for dental, characterized in that the polymer is contained in 20 to 80% by weight based on the total weight of the impression material composition.
3.  The method of claim 1, wherein the organopolysiloxane,

    A first organopolysiloxane having at least two aliphatic unsaturated hydrocarbon groups in one molecule and having a viscosity of 10,000 to 100,000 cPs at 25 ° C;

    Second organopolysiloxane having at least two aliphatic unsaturated hydrocarbon groups in one molecule and having a viscosity of 1,000 to 10,000 cPs at 25 ° C; And

    A third organopolysiloxane having at least one aliphatic unsaturated hydrocarbon group in one molecule and having a viscosity of 100 to 1,000 cPs at 25 ° C;

   A mixture of two or more selected from the group consisting of

    The mixture has a content ratio (weight ratio) of the first organopolysiloxane and the second organopolysiloxane of 0.1: 10 to 10: 0.1, or the content of the first organopolysiloxane and the second organopolysiloxane and the third organopolysiloxane. Dental impression material composition, characterized in that the content ratio of 0.1: 10 to 10: 0.1.
4.  The impression material composition of claim 1, wherein the impression material composition has a consistency of 30 to 45 mm.
5.  The method of claim 1, wherein the filler is an inorganic filler, or an organic filler, or a mixture of inorganic fillers and organic fillers,

    The inorganic filler is cristobalite, crystalline natural silica, barium aluminum silicate, kaolin, talc, strontium aluminum silicate, glass, barium silicate glass, strontium silicate Glass, borate aluminum silicate glass, phosphate aluminum silicate glass, fluoro aluminum silicate glass, glass bead, calcium silicate, zirconium silicate, sodium silicate Zeolites, alkali metals, including aluminum, silicate layers, ceramic microspheres, aluminum trihydrate (ATH), and calcium carbonate, bentonite, molecular sieves, Oxides, hydroxides, apatites of alkaline earth metals, Dental impression material composition, characterized in that at least one selected from the group consisting of filled chip polymer, spherical filler, acid reactive filler, and nano zirconia filler.
6.  According to claim 1, wherein the filler is a dental impression material composition, characterized in that contained in 20 to 90% by weight based on the total weight of the impression material composition.
7.  7. The dental impression material composition of claim 6, wherein the filler comprises 20 to 70 wt% based on the total weight of the impression material composition.
8.  The dental impression composition according to claim 1, wherein the filler has an average particle size of 0.1 µm or more and less than 50 µm.
9. The method of claim 1, wherein the corrugated filler has an average particle length of 1 ㎛ or more and less than 14 ㎛, the specific surface area of 1 to 20 m ² / g, the spherical filler has an average particle diameter of 1 ㎛ or more and less than 10 ㎛ , Impression material composition for dental, characterized in that the specific surface area of 1 to 10 m ² / g.
10.  The dental impression material composition according to claim 1, wherein the filler is a mixture of corrugated fillers and spherical fillers in a content ratio (weight ratio) of 1:19 to 19: 1.
11.  The method of claim 1, wherein the impression material composition further comprises an amorphous synthetic silica as a dry reinforcing filler, wherein the amorphous synthetic silica is one selected from the group consisting of fumed silica, silica gel, precipitated silica, silica sol, and silicon acid Impression material composition for dental, characterized in that above.
12. The method of claim 11, wherein the amorphous synthetic silica is fumed silica having an average particle size of 10 to 100 nm, a specific surface area of 200 to 300 m ² / g, wherein the fumed silica is 10 to 70 weight based on the total weight of the dispersion Dental impression material composition, characterized in that contained in 10 to 50% by weight in the total impression material composition in the form of a dispersion dispersed in polyvinylsiloxane (%).
13.  According to claim 1, wherein the impression material composition further comprises a QM resin (quadri-functional polysiloxane), the QM resin has a viscosity of 6,000 to 10,000 cPs, characterized in that the vinyl group content of 0.20 to 0.21 mmol / g Dental impression material composition.
14.  The method of claim 1, wherein the surfactant is a nonionic surfactant, sodium lauryl sulfate, monoglyceride sulfate, sodium lauroyl sarcosinate, sucrose fatty acid ester acid ester), lauric acid diethanolamide, cured castor oil, polyoxyethylene, trisiloxane ethoxylate, and fluorine-based surfactants; And, the surface tension of the surfactant is a dental impression material composition, characterized in that 10 to 30 N / m.
15.  According to claim 1, wherein the curing agent is a platinum catalyst, impression material composition, characterized in that contained in 0.05 to 5% by weight based on the total weight of the impression material composition.
16.  The impression material composition of claim 1, wherein the curing retardant has a viscosity of 4 to 500 cPs and is included in an amount of 0.1 to 10 wt% based on the total weight of the impression material composition.
17.  According to claim 1, wherein the crosslinking agent is an organopolysiloxane comprising a hydrogen group at the molecular chain terminal, the crosslinking agent is a dental impression material composition, characterized in that contained in 1 to 10% by weight based on the total weight of the impression material composition.
18. 18. The method of claim 17, wherein the organopolysiloxane comprising a hydrogen group is an organo hydrogen polysiloxane containing silicon substituted with a C ₁ -C ₃ alkyl group at one molecular end (organo hydrogen polysiloxane) Impression material composition for.
19.  2. The dental impression material composition of claim 1, wherein the dental impression material composition is an addition polymerization type two-component paste in which a base paste and a catalyst paste are mixed, and the content ratio of the base paste and the catalyst paste ( Weight ratio) is 0.1: 1 to 1: 0.1 Impression material composition for dental.