WO2016171303A1 - Composition de matériau d'empreinte dentaire présentant de bonnes performances de balayage et des propriétés mécaniques, et matériau d'empreinte dentaire comprenant la composition - Google Patents

Composition de matériau d'empreinte dentaire présentant de bonnes performances de balayage et des propriétés mécaniques, et matériau d'empreinte dentaire comprenant la composition Download PDF

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WO2016171303A1
WO2016171303A1 PCT/KR2015/004190 KR2015004190W WO2016171303A1 WO 2016171303 A1 WO2016171303 A1 WO 2016171303A1 KR 2015004190 W KR2015004190 W KR 2015004190W WO 2016171303 A1 WO2016171303 A1 WO 2016171303A1
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impression material
dental impression
material composition
organopolysiloxane
cps
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PCT/KR2015/004190
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English (en)
Korean (ko)
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오명환
김영주
이혜옥
김윤기
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(주) 베리콤
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/90—Compositions for taking dental impressions

Definitions

  • the present invention relates to a dental impression material composition, and to a dental impression material composition that can improve the scanning efficiency of the dental impression material, including a pigment with a modified surface.
  • dental impression material is a material used to obtain the impression of the oral tissue in the oral cavity. Since the impression material is a material applied to the oral cavity of the patient, high safety is required above all. In addition, teeth or tissues can be replicated precisely, free of unpleasant tastes, odors, toxicity, irritants and allergic reactions, and adequate flow, elasticity and stability to size changes are required. When removed in the oral cavity, it must have sufficient mechanical strength to resist tearing or permanent deformation and there should be no size change or physical change after disinfection. In addition, the impression material should have good affinity with the model material, ensure sufficient working time, be easy to store and resist discoloration.
  • Dental impression materials can be classified into elastic impression materials, inelastic impression materials, reversible impression materials and irreversible impression materials.
  • 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.
  • the digital impression acquisition method has superior advantages over the existing impression acquisition method such as easy data storage, high work efficiency, and reduction of patient discomfort due to the impression body.
  • the digital impression acquisition method may be useful for patients with hemorrhagic disease, soft tissue disease, and vomiting.
  • skill is required in the acquisition of impressions, and the effect of the learning curve should be considered in terms of accuracy.
  • reproducibility, scanner and cutting equipment precision, and oral scanner size should be reduced so that a certain result can be obtained regardless of the skill of a technician. Solving the above problems, digital impression acquisition, along with CAD / CAM, will bring about an important paradigm shift in digital dentistry.
  • US Patent 2014-0315154 discloses an impression material which improves tensile strength by using a silane-treated chain extender and various organopolysiloxane mixtures.
  • the point viscosity of the light body having the lowest viscosity of the impression material is 55 mm to 60 mm, there is a problem that the viscosity is too low to be used as a commercial impression material.
  • An object of the present invention is to provide a dental impression material composition that can improve the scanning efficiency of the dental impression material, including a pigment with a modified surface.
  • the organopolysiloxane; filler; Pigments; And a crosslinking agent; and a dental impression material composition comprising the metal oxide, a metal hydroxide, a metal oxyhydrate, a metal carbonate, a metal silicate, and a metal silicate.
  • a core comprising at least one selected from the group consisting of metal chlorides and metal carboxylates; And an organic silane group covalently bonded to the surface of the core by surface-treating silicon dioxide (SiO 2 ) coated on the surface of the core or the surface of the core with organic silane.
  • the organic silane may be a compound represented by the following Structural Formula 1.
  • R 1 is a C1-C15 alkyl group
  • R 2 to R 4 are the same as or different from each other, and are each independently a C1-C9 alkyl group.
  • the metal oxide, metal hydroxide, metal oxyhydrate, metal carbonate, metal silicate, metal chloride and metal carboxylate may be any one selected from the group consisting of titanium, magnesium, calcium, strontium, barium, boron, aluminum, silicon, zinc, potassium, lithium, rubidium and cesium.
  • the dental impression material composition may further comprise a curing agent.
  • the dental impression material composition may further comprise a curing retardant.
  • the dental impression material composition is 100 parts by weight of organopolysiloxane; Filler 55 to 400 parts by weight; 1 to 200 parts by weight of the pigment; 1 to 50 parts by weight of a crosslinking agent; 0.05 to 50 parts by weight of the curing agent; And 0.01 to 50 parts by weight of a curing retardant.
  • the average particle size of the pigment may be 0.01 ⁇ m to 500 ⁇ m.
  • the organopolysiloxane is an organopolysiloxane including a vinyl group, an organopolysiloxane monomer having a viscosity of 100 cPs to 1,000 cPs at 25 ° C., and a vinyl group content of 0.11 mmole / g to 0.40 mmole / g; Organopolysiloxane monomers having a viscosity of 1,000 cPs to 10,000 cPs and a vinyl group content of 0.05 mmole / g to 0.11 mmole / g at 25 ° C .; And an organopolysiloxane-based monomer having a viscosity of 10,000 cPs to 100,000 cPs and a vinyl group content of 0.02 mmole / g to 0.05 mmole / g at 25 ° C ..
  • the mixture has a ratio (A: B) of 1:30 to 30: 1 of the second organopolysiloxane (A) to the first organopolysiloxane (A) or the first organopolysiloxane (A) and the second organ
  • the ratio (A + B: C) of the third organopolysiloxane (C) to the organopolysiloxane (B) may be 1:20 to 20: 1.
  • the filler is an inorganic filler, an organic filler or a mixture of inorganic fillers and organic fillers, and the inorganic filler is cristobalite, crystalline natural silica, barium aluminum silicate, kaolin, talc , Strontium aluminum silicate, barium silicate glass, strontium silicate glass, borate aluminum silicate glass, phosphate aluminum silicate glass, fluorine aluminosilicate glass Zeolite including glass beads, calcium silicate, zirconium silicate, sodium aluminum silicate, aluminum trihydrate (ATH), calcium carbonate, bentonite, molecular sieve ), Apatite and nano zirconia It may include one or more selected.
  • the dental impression material composition may further include an amorphous synthetic filler as a dry reinforcing filler, and the amorphous synthetic filler may be at least one selected from fumed silica, silica gel, precipitated silica, silica sol, and silicon acid.
  • the amorphous synthetic filler may be surface modified by a surface modifier, and the organopolysiloxane may be combined with the surface modifier to graft polymerize.
  • the surface modifier may be a compound represented by the following Structural Formula 2 as a silane coupling agent.
  • A is a C1-C5 alkoxy group or halogen group
  • R is an epoxy group, a styryl group, a methacryloxy group, an acryloxy group, or an amino group.
  • the amorphous synthetic filler is an organic-inorganic hybrid composite, which is uniformly dispersed in polyvinylsiloxane and mixed in a masterbatch form, and may be included in an amount of 40 to 150 parts by weight based on 100 parts by weight of the total weight of the polyvinylsiloxane.
  • the average particle size of the fumed silica may be 1 nm to 500 nm.
  • the dental impression composition may have a consistency of 35 mm to 50 mm.
  • the curing agent may comprise a platinum catalyst.
  • the viscosity of the curing retardant may be 4 cPs to 500 cPs.
  • the crosslinking agent may include an organopolysiloxane including a hydrogen group at the end of the molecular chain.
  • the organopolysiloxane may be an organo hydrogen polysiloxane including a silicon compound substituted with a C1-C3 alkyl group.
  • the dental impression material composition may further comprise a surfactant.
  • the surfactant is a nonionic surfactant, sodium lauryl sulfate, monoglyceride sulfate, sodium lauroyl sarcosinate, sucrose fatty acid ester, laurin It may include one or more selected from lauric acid diethanolamide, cured castor oil, polyoxyethylene, trisiloxane ethoxylate, and fluorine-based surfactants.
  • the dental impression material composition may further comprise a chain extender.
  • the chain extender may be a compound represented by the following Structural Formula 3.
  • x 1 to 100.
  • the dental impression material composition is an addition polymer type two-component paste in which a base paste and a catalyst paste are mixed, and a weight ratio (D: E) of the base paste (D) and the catalyst paste (E) is 1:10 to 10: 1 days. Can be.
  • the present invention provides a dental impression material prepared by curing the dental impression material composition.
  • the dental impression material may have a tear strength of 5 N / mm to 15 N / mm measured by ASTM D1938, and a tensile strength of 1 N / mm 2 to 10 N / mm 2 measured by ASTM D1238.
  • the dental impression material composition of the present invention has an effect of improving the scanning efficiency of the dental impression material, including a pigment with a surface modified unlike the prior art.
  • Figure 2 is a result of performing a CAD / CAM scan after obtaining the impression of the teeth using the dental impression material composition according to Example 3 and Example 4.
  • Figure 3 is a result of performing a CAD / CAM scan after taking the impression of the teeth using the dental impression material composition according to Comparative Example 1.
  • Figure 4 is a result of performing a CAD / CAM scan after taking the impression of the teeth using the dental impression material composition according to Comparative Example 2 and Comparative Example 3.
  • the dental impression material composition of the present invention comprises an organopolysiloxane, a filler, a pigment, and a crosslinking agent, wherein the pigment is composed of a metal oxide, a metal hydroxide, a metal hydride, a metal carbonate, a metal silicate, a metal chloride and a metal carboxylate.
  • a core comprising at least one selected from the group, and an organic silane group covalently bonded to the surface of the core by surface-treating silicon dioxide (SiO 2 ) coated on the surface of the core or the surface of the core with an organic silane can do.
  • the organic silane may be a compound represented by the following Structural Formula 1.
  • R 1 is a C1-C15 alkyl group
  • R 2 to R 4 are the same as or different from each other, and are each independently a C1-C9 alkyl group.
  • the metal oxide, metal hydroxide, metal oxyhydrate, metal carbonate, metal silicate, metal chloride and metal carboxylate In any one selected from the group consisting of carboxylate) the metal may be titanium, magnesium, calcium, strontium, barium, boron, aluminum, silicon, zinc, potassium, lithium, rubidium, cesium and the like.
  • the dental impression material composition may further include a curing agent and a curing retardant.
  • the dental impression material composition is preferably 100 parts by weight of organopolysiloxane, 55 to 400 parts by weight of filler, 1 to 200 parts by weight of dye, 1 to 50 parts by weight of crosslinking agent, 0.05 to 50 parts by weight of curing agent and 0.01 to 50 curing retardant It may include parts by weight.
  • the average particle size of the pigment may be 0.01 ⁇ m to 500 ⁇ m, preferably 0.03 ⁇ m to 100 ⁇ m, and more preferably 0.1 ⁇ m to 50 ⁇ m.
  • the titanium dioxide When the titanium dioxide is used as a dye, it may be preferable to add a mixture of dimethicone, cetyl dimethicone, silicon dioxide, triethoxycacrylsilane, cyclopentasiloxane, cyclohexasiloxane and stearyldimethicone. If the additive is not added, sedimentation, aggregation, and solidification of the titanium dioxide particles may occur to cause phase separation due to color change, viscosity change, and composition ratio change. In order to maintain electrical repulsion between the titanium dioxide particles and to cause steric hindrance of the titanium dioxide surface, it may be desirable to add a silicon oil-based surface treatment component.
  • the organopolysiloxane is an organopolysiloxane containing a vinyl group, an organopolysiloxane monomer having a viscosity of 100 cPs to 1,000 cPs at 25 ° C., and a vinyl group content of 0.11 mmole / g to 0.40 mmole / g at 25 ° C.
  • Organopolysiloxane monomers having a viscosity of 1,000 cPs to 10,000 cPs and a vinyl group content of 0.05 mmole / g to 0.11 mmole / g, and a viscosity of 10,000 cPs to 100,000 cPs and a vinyl group content of 0.02 mmole / g at 25 ° C It may be a polymer made of one or more monomers selected from the group consisting of organopolysiloxane monomers from 0.05 mmole / g.
  • the organopolysiloxane has two or more aliphatic unsaturated hydrocarbon groups in one molecule, the first organopolysiloxane (A) having a viscosity of 10,000 cPs to 100,000 cPs at 25 ° C; A second organopolysiloxane (B) having at least two aliphatic unsaturated hydrocarbon groups in one molecule and having a viscosity of 1,000 cPs to 10,000 cPs at 25 ° C .; And a third organopolysiloxane (C) having at least one aliphatic unsaturated hydrocarbon group in one molecule and having a viscosity of 100 cPs to 1,000 cPs at 25 ° C.
  • the organopolysiloxane may include the first organopolysiloxane (A), the second organopolysiloxane (B), and the third organo It is preferable that it is a mixture of 2 or more types selected from polysiloxane (C).
  • the first organopolysiloxane may be putty at room temperature, and the second organopolysiloxane may be paste-like in a high viscosity solution at room temperature.
  • the degree of polymerization of the first and second organopolysiloxanes is preferably 2,000 or more.
  • the third organopolysiloxane may be liquid at room temperature.
  • the mixture may have a ratio (A: B) of the second organopolysiloxane (B) to the first organopolysiloxane (A) of 1:30 to 30: 1, preferably 1:20 to 20: 1 , More preferably 1:10 to 10: 1.
  • the mixture may have a ratio (A + B: C) of 1:20 to 20: 1 of the first organopolysiloxane (A) and the second organopolysiloxane (B) to the third organopolysiloxane (B) , Preferably 1:10 to 10: 1, more preferably 1: 5 to 5: 1.
  • the filler may be an inorganic filler, 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, barium silicate glass, strontium silicate glass, Borate aluminum silicate glass, phosphate aluminum silicate glass, fluorine aluminate silicate glass, glass beads, calcium silicate, zirconium silicate, sodium aluminum silicate , Aluminum trihydrate (ATH), calcium carbonate, calcium carbonate, bentonite, zeolite including molecular sieve, apatite, nano zirconia, and the like.
  • ATH Aluminum trihydrate
  • the dental impression material composition may further include an amorphous synthetic filler as a dry reinforcing filler.
  • the amorphous synthetic filler may be fumed silica, silica gel, precipitated silica, silica sol, silicon acid, and the like.
  • the amorphous synthetic filler may be surface modified by a surface modifier, and the organopolysiloxane may be combined with the surface modifier to graft polymerize.
  • Silica has hydrophilicity because of the silanol (Si-OH) on the surface, and has a disadvantage in that the bonding strength is low because the interaction with the hydrophobic organic polymer is small. Therefore, it is desirable to improve the bonding strength between the organic polymer and the silica by modifying the surface of the silica.
  • the silica may be modified surface of the silica by the strong interaction of the surface modifier.
  • the surface modifier may be a silane coupling agent, preferably an alkoxy coupling agent, more preferably an ethoxysilane coupling agent.
  • the silane coupling agent prevents agglomeration of silica and increases the interaction with the long organic chain of the polymer, thereby improving the binding force between the organic polymer and the silica.
  • the surface modifier may be a compound represented by Structural Formula 2 as a silane coupling agent.
  • A is a C1-C5 alkoxy group or halogen group
  • R is an epoxy group, a styryl group, a methacryloxy group, an acryloxy group, or an amino group.
  • the amorphous synthetic filler is an organic-inorganic hybrid composite, which may be uniformly dispersed in polyvinylsiloxane and mixed in a masterbatch form.
  • the polyvinylsiloxane may be included in an amount of 40 to 150 parts by weight based on 100 parts by weight of the total weight.
  • the amorphous synthetic filler may be uniformly dispersed in polyvinylsiloxane and used in the form of a dispersion, thereby producing a dental impression material composition having high strength properties such as high elongation and high tear.
  • the fumed silica is not a conventional fumed silica prepared by firing and pulverizing the silica, but by using a fumed silica prepared by heating a conventional silica, cutting it under a high temperature and vacuum, and then depositing it on a cold surface. It may be desirable.
  • the fumed silica forms three-dimensional structural bonds, and when shear force is applied, the mutual bonds of the silica molecules are easily broken, and thixotropy is changed into a liquid sol-like form. Therefore, when injecting the composition containing fumed silica using an injection gun (gun) has an advantage that the flow is improved and easy to use.
  • the average particle size of the fumed silica may be 1 nm to 500 nm, preferably 5 nm to 300 nm, and more preferably 10 nm to 200 nm.
  • the particle size of the fumed silica is nano sized and spherical. This allows the fumed silica to have a very large surface area, preferably 10 m 2 / g to 600 m 2 / g, more preferably 30 m 2 / g to 500 m 2 / g, more preferably 50 m 2 / g to 400 m 2 / g.
  • the filler When the filler is included in less than 20% by weight relative to the total dental impression material composition may be too high fluidity, it is difficult to implement the sufficient physical properties of the impression material required in the present invention. On the other hand, when the filler exceeds 80% by weight relative to the total dental impression material composition may be too high viscosity to be difficult to perform the softening operation.
  • the curing agent may serve as a catalyst for crosslinking polymerization, and the curing agent may include a platinum catalyst, preferably chloroplatinic acid, alcohol-modified chloroplatinic acid, complex of chloroplatinic acid and olefin, and more preferably platinum -Platinum-divinyltetramethyldisiloxane complex is possible.
  • a platinum catalyst preferably chloroplatinic acid, alcohol-modified chloroplatinic acid, complex of chloroplatinic acid and olefin, and more preferably platinum -Platinum-divinyltetramethyldisiloxane complex is possible.
  • the curing agent is less than 0.05% by weight based on the total dental impression material composition may be a slow curing rate, the curing rate may be slower if a small amount of a substance that inhibits the catalytic performance of the platinum catalyst.
  • the curing agent exceeds 0 5% by weight based on the total dental impression material composition, not only the curing rate is too fast, but also the manufacturing cost may increase.
  • Hardening retardants are used to ensure sufficient working time when pulling up.
  • the viscosity of the curing retardant may be 4 cPs to 500 cPs.
  • the curing retardant is preferably 1,3,5,7-tetravinyltetramethylcyclotetrasiloxane (1,3,5,7-tetravinyltetramethylcyclotetrasilonxane) having a vinyl group content of 1.5 mmole / g to 15 mmole / g. Can be.
  • the crosslinking agent may include an organopolysiloxane including a hydrogen group at the end of the molecular chain.
  • the organopolysiloxane may be an organo hydrogen polysiloxane including a silicon compound substituted with a C1-C3 alkyl group.
  • the organohydrogenpolysiloxane is polymethylhydrosiloxane, methylhydro-dimethylsilonic acid, polymethylhydrosiloxane having a viscosity of 2 cPs to 10,000 cPs and a Si-H content of terminal groups of 0.01 mmol / g to 5.5 mmol / g And a methyl hydro methyl siloxane copolymer and a mixture of polymethylhydrosiloxane and methylhydro-dimethylsilonic acid, wherein the organohydrogenpolysiloxane includes an organopolysiloxane including a vinyl group. It can be used as a crosslinking agent in addition reaction using a curing agent.
  • the dental impression material composition may further comprise a surfactant.
  • the surfactant is a nonionic surfactant, sodium lauryl sulfate, monoglyceride sulfate, sodium lauryl sarcosinate, sucrose fatty acid ester, laurin It may include one or more selected from lauric acid diethanolamide, cured castor oil, polyoxyethylene, trisiloxane ethoxylate, and fluorine-based surfactants.
  • the surface tension of the surfactant may be 10 N / m to 30 N / m.
  • the dental impression material composition may further include a chain extender.
  • the chain extender may be a compound represented by the following Structural Formula 3.
  • x 1 to 100.
  • the chain extender may be preferably polydimethylsiloxane including a hydrogen group at the molecular chain end, and the viscosity of the polydimethylsiloxane may be preferably 100 to 1000 cPs.
  • the polydimethylsiloxane may be more preferably polydimethylsiloxane including a hydrogen group at the molecular chain ends, and the silicon (Si-H) content of the polydimethylsiloxane may be 0.1 to 0.4 mmol / g.
  • the dental impression material composition may have a suitable viscosity (consistency) according to the use, such as for abutment injection or tray, preferably 30 mm to 45 mm. Specifically, when the viscosity of the dental impression material composition exceeds 45 mm viscosity is low mechanical strength of the impression material may be weak, the dental impression material may be torn when removing the dental impression material. On the other hand, when the viscosity is less than 30 mm viscosity is too high it may be difficult for the impression material to penetrate to the minute portion of the depression.
  • the dental impression material composition may be prepared by dividing it into a base paste and a catalyst paste, and may be an addition polymerization type two-component paste in which the base paste and the catalyst paste are mixed.
  • the weight ratio (D: E) of the catalyst paste (E) to the base paste (D) may be 1:10 to 10: 1, preferably 1: 5 to 5: 1, more preferably 1: 1. To 1: 1.
  • the dental impression material composition may be used by adding a plasticizer, a pigment, a perfume, a viscosity modifier, etc. in addition to the above components.
  • Dental impression material of the present invention may have a tear strength of 5 N / mm to 15 N / mm measured by ASTM D1938.
  • the tear strength of the dental impression material may be preferably 7 N / mm to 13 N / mm, more preferably 9 N / mm to 11 N / mm.
  • the dental impression material may have a tensile strength of 1 N / mm 2 to 10 N / mm 2 by ASTM D1238.
  • Tensile strength of the dental impression material may be preferably 1 N / mm 2 to 8 N / mm 2 , more preferably 2 N / mm 2 to 5 N / mm 2 . If the tensile strength of the dental impression material is greater than 10 N / mm 2 , the patient may complain pain when the dental impression material is extracted, the dental impression material can be easily torn when the tensile strength is less than 1 N / mm 2. have.
  • Polydimethylsiloxane (Momentive, Silopren U 0.2) having a total vinyl group content of 0.25 mmol / g and a viscosity of 200 cPs at 25 ° C. was prepared.
  • a polydimethylsiloxane (Momentive, Silopren U 1) having a total vinyl group content of 0.11 mmol / g and a viscosity of 1,000 cPs at 25 ° C. was prepared.
  • Polydimethylsiloxane (Momentive, Silopren U 5) having a total vinyl group content of 0.08 mmol / g and a viscosity of 4,500 cPs at 25 ° C. was prepared.
  • Polydimethylsiloxane (Momentive, Silopren U 10) having a total vinyl group content of 0.05 mmol / g and a viscosity of 10,000 cPs at 25 ° C. was prepared.
  • Fumed silica (Konasil K121, Dongyang Steel) was premixed with polyvinylsiloxane at 40% by weight for 2 hours, and then uniformly mixed with a 3-roll mill to prepare a fumed silica filler.
  • Terminals prepared according to Preparation Examples 1 to 4 were mixed in the order of polydimethylsiloxane, a filler, a crosslinking agent, a curing agent, a dye, a curing delay agent and a surfactant substituted with a vinyl group.
  • the filler used was a fumed silica filler prepared according to Preparation Example 5, diatomite silica having a particle size of 3 ⁇ m and cristobalite having a particle size of 5 ⁇ m.
  • the crosslinking agent was a methylhydro-dimethylsilonic acid copolymer (Momentive: U Xlink 430) having a viscosity of 40 mPas and a Si-H content of 4.3 mmol / g.
  • the curing agent used was a platinum-divinyltetramethyldisiloxane complex (Momentive: Pt-D) dispersed in polydimethylsiloxane at 0.82% by weight.
  • the pigment has a particle size of 300 nm and is titanium dioxide (Sunjin Chemical, Suntitan-AS) surface treated with 5% by weight of triethyloxycaprylsilane, red pigment (DK D & C Red No.
  • the curing retardant was 1,3,5,7-tetravinyltetramethylcyclotetrasiloxane (1,3,5,7-tetravinyltetramethylcyclotetrasilonxae).
  • the surfactant lauroyl diethanolamide was used.
  • the chain extender used polydimethylsiloxane containing a hydrogen group in the molecular chain sock end.
  • titanium dioxide (Sunjin chemical, T-80) surface-treated with 16% by weight of silicon oxide instead of nanosize was used as a pigment. It was. In the same manner as in Example 1 in the composition ratio of Table 3 to prepare a dental impression material composition.
  • titanium dioxide (Sunjin chemical, T-80) surface-treated with 16% by weight of silicon oxide instead of nanosize was used as a pigment.
  • T-80 titanium dioxide (Sunjin chemical, T-80) surface-treated with 16% by weight of silicon oxide instead of nanosize was used as a pigment.
  • each paste was filled in a dual type syringe. After the tip was coupled to the dual type syringe, the gun was mounted on the gun, and the trigger of the gun was pulled so that the base paste and the catalyst paste were mixed and injected at the tip in a 1: 1 ratio. The mixed paste was cured for a predetermined time to prepare a dental impression material.
  • a dental impression material was prepared in the same manner as in Example 5, except that the base paste and the catalyst paste prepared according to Example 2 were used instead of Example 1.
  • a dental impression material was manufactured in the same manner as in Example 5, except that the base paste and the catalyst paste prepared according to Example 3 were used instead of Example 1.
  • a dental impression material was prepared in the same manner as in Example 5, except that the base paste and the catalyst paste prepared according to Example 4 were used instead of Example 1.
  • a dental impression material composition was prepared in the same manner as in Example 1 in the composition ratio of Table 5 without a dye.
  • a dental impression material composition was prepared in the same manner as in Example 1 at the composition ratio of Table 7 below using, as a dye, the surface-treated titanium dioxide instead of the titanium dioxide surface-treated with the triethyloxycaprylsilane of Example 1. .
  • each paste was filled in a dual type syringe. After the tip was coupled to the dual type syringe, the gun was mounted on the gun, and the trigger of the gun was pulled so that the base paste and the catalyst paste were mixed and injected at the tip in a 1: 1 ratio. The mixed paste was cured for a predetermined time to prepare a dental impression material.
  • a dental impression material was manufactured in the same manner as in Comparative Example 4, except that the base paste and the catalyst paste prepared according to Comparative Example 2 were used instead of Comparative Example 1.
  • a dental impression material was manufactured in the same manner as in Comparative Example 4, except that the base paste and the catalyst paste prepared according to Comparative Example 3 were used instead of Comparative Example 1.
  • Test Example 1 dental Impression Of composition CAD Of CAM scan
  • Tooth impressions were obtained using dental impression material compositions according to Example 1 (4% Sil) and Example 2 (8% Sil), and then the results were shown in FIG. 1 by CAD / CAM scan.
  • the results using the dental impression material compositions of (4% SiO 2 ) and Example 4 (8% SiO 2 ) are shown in FIG. 2, and the results using the dental impression material compositions of Comparative Example 1 (control) are shown in FIG. 3.
  • the results using the dental impression material compositions of Comparative Example 2 (4% KT) and Comparative Example 3 (8% KT) are shown in FIG. 4.
  • the CAD / CAM scan results using the dental impression material composition prepared according to Examples 1 to 4, the scan is clean, while using the dental impression material composition prepared according to Comparative Examples 1 to 3 CAD / CAM scans show no scans or irregularities.
  • Test Example 2 Measurement of the properties of dental impression materials
  • the dental impression material composition was placed in a separable metal mold having an internal diameter of 12.5 ⁇ 0.05 mm and a height of 20 ⁇ 0.2 mm, and the time until proper curing at 35 ⁇ 1 ° C. was measured.
  • the scale (H 2 ) was read after 30 seconds after application within a total of 30 seconds at 15 second intervals.
  • the curing time was calculated by substituting the measured values into the following equation.
  • the measurement of the store weight was carried out by raising 0.5 ml of the dental impression material composition on the polyethylene film on the glass plate, and then covering the film with another glass plate. A load of 14.7 N was applied for 5 seconds and then cured at room temperature for 15 minutes. After that, the average was calculated by measuring the diameter of the major and minor axes. Three measurements were made for each group, and the results were calculated.
  • the strain recovery test was performed according to the rubber impression material standard ISO4823: 2000 (Dentistry-Elastomeric impression materials).
  • the strain recovery rate meter was operated to deform the dental impression material to 6 mm, and after removing the load, relax for 110 seconds and record the scale. Five specimens were produced for each group and tested.
  • 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).
  • the color difference uses the CIE LAB (L *, a *, b *) notation developed by CIE (International Lighting Commission) as a method of expressing color as a quantitative value.
  • colors are represented by brightness (L *) and colors (a *, b *).
  • L1 brightness
  • a *, b * colors
  • b is + is yellow
  • -is close to blue if a is +, red is-, it is close to green, b is + is yellow, and-is close to blue.
  • the comparison indicates the coordinates on the coordinates of the color to a standard as L1, a1, b1 with L 2, a 2, b 2 is the color difference of two colors is represented as the expression below.
  • dental impression material containing titanium dioxide does not contain titanium dioxide (comparative example Compared with 4), it was found to have higher tear strength and tensile strength.
  • the dental impression material including titanium dioxide with a modified surface according to Examples 5 to 8 is more tensile than the dental impression material containing titanium dioxide with no modified surface. It was found that the strength was high.
  • the dental impression material (Examples 7 and 8) including titanium dioxide coated with silica and modified on its surface was lower in tear strength than other examples.
  • the L * value and the tensile strength of the dental impression material including the titanium dioxide modified surface were also excellent.
  • the dental impression material composition and the dental impression material of the present invention can be confirmed that the mechanical properties are improved while the CAD / CAM scanning is possible.
  • the dental impression material composition of the present invention has an effect of improving the scanning efficiency of the dental impression material, including a pigment with a surface modified unlike the prior art.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dentistry (AREA)
  • Dental Preparations (AREA)

Abstract

L'invention concerne une composition de matériau d'empreinte dentaire comprenant : un organopolysiloxane, une charge, un pigment et un agent de réticulation. La composition de matériau d'empreinte dentaire de l'invention permet d'améliorer l'efficacité du balayage pour un matériau d'empreinte dentaire comprenant un pigment modifié sur sa surface, et de produire une empreinte précise par augmentation de la résistance à la déchirure et de la résistance à la traction du matériau d'empreinte dentaire.
PCT/KR2015/004190 2015-04-23 2015-04-27 Composition de matériau d'empreinte dentaire présentant de bonnes performances de balayage et des propriétés mécaniques, et matériau d'empreinte dentaire comprenant la composition WO2016171303A1 (fr)

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KR1020150057166A KR101674067B1 (ko) 2015-04-23 2015-04-23 우수한 스캐닝 성능 및 기계적 물성을 갖는 치과용 인상재 조성물 및 그를 포함하는 치과용 인상재
KR10-2015-0057166 2015-04-23

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US20220023156A1 (en) * 2020-07-23 2022-01-27 Kellie Alexander Putty system, method, and apparatus
KR20230086219A (ko) * 2021-12-08 2023-06-15 오스템임플란트 주식회사 기포제어가 우수한 치과용 인상재 조성물
KR102616960B1 (ko) * 2023-05-18 2023-12-27 주식회사 광명데이콤 치아 보조물 성형용 다층시트의 제조방법 및 이로부터 제조된 치아 보조물 성형용 다층시트

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EP0820265B1 (fr) * 1995-04-13 2005-06-29 Dentsply International, Inc. Materiau ameliore pour empreintes a base de polyvinylsiloxane
KR20090033591A (ko) * 2007-10-01 2009-04-06 쓰리엠 이노베이티브 프로퍼티즈 캄파니 인상재 조성물
KR20120034058A (ko) * 2010-09-30 2012-04-09 가부시키가이샤 지씨 치과용 실리콘 인상재 조성물
KR20120070944A (ko) * 2010-12-22 2012-07-02 주식회사 메타바이오메드 트리메틸실란으로 표면 처리된 크리스토발라이트를 포함하는 인상재 조성물과 그 제조방법
KR101458797B1 (ko) * 2013-04-29 2014-11-07 (주) 베리콤 기계적 물성이 향상된 치과용 인상재

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Publication number Priority date Publication date Assignee Title
EP0820265B1 (fr) * 1995-04-13 2005-06-29 Dentsply International, Inc. Materiau ameliore pour empreintes a base de polyvinylsiloxane
KR20090033591A (ko) * 2007-10-01 2009-04-06 쓰리엠 이노베이티브 프로퍼티즈 캄파니 인상재 조성물
KR20120034058A (ko) * 2010-09-30 2012-04-09 가부시키가이샤 지씨 치과용 실리콘 인상재 조성물
KR20120070944A (ko) * 2010-12-22 2012-07-02 주식회사 메타바이오메드 트리메틸실란으로 표면 처리된 크리스토발라이트를 포함하는 인상재 조성물과 그 제조방법
KR101458797B1 (ko) * 2013-04-29 2014-11-07 (주) 베리콤 기계적 물성이 향상된 치과용 인상재

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