Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K6/00—Preparations for dentistry
  • A61K6/30—Compositions for temporarily or permanently fixing teeth or palates, e.g. primers for dental adhesives
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K6/00—Preparations for dentistry
  • A61K6/60—Preparations for dentistry comprising organic or organo-metallic additives
  • A61K6/61—Cationic, anionic or redox initiators
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K6/00—Preparations for dentistry
  • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
  • A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
  • A61K6/887—Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
  • C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
  • C08F20/04—Acids, Metal salts or ammonium salts thereof
  • C08F20/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/04—Oxygen-containing compounds
  • C08K5/14—Peroxides
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/04—Oxygen-containing compounds
  • C08K5/15—Heterocyclic compounds having oxygen in the ring
  • C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
  • C08K5/1535—Five-membered rings
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/54—Silicon-containing compounds
  • C08K5/541—Silicon-containing compounds containing oxygen
  • C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
  • C08K5/5419—Silicon-containing compounds containing oxygen containing at least one Si—O bond containing at least one Si—C bond
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond

Definitions

• the present invention relates to a sachet-type dental curable composition used for bonding dental prostheses such as crowns, inlays, and bridges to tooth structure, and for building abutments in dental treatment. More specifically, the present invention relates to a sachet-type dental curable composition having good chemical polymerization curable properties and excellent adhesion durability to CAD/CAM resins.
• a prosthetic device such as an inlay, onlay or crown that fits the shape of the restored part is manufactured outside the oral cavity in advance, and is attached to the dental adhesive. Bonding prosthetic restorations using lumber are common.
• CAD/CAM that thermally and/or photopolymerizes a composite material consisting of a (meth)acrylate-based polymerizable monomer and an inorganic filler from a conventionally used metal prosthetic device.
• Prosthetic devices made of resins for dental implants and hard resins for dental crowns have become mainstream.
• Some hardened resins are polymerized by heat and/or light and have a material strength similar to that of teeth. It can also be applied to the posterior teeth where the occlusal pressure is very high. When a dental prosthesis using these cured resins is adhered to an abutment tooth, a dental resin cement is usually used.
• the resin for CAD/CAM is thermally polymerized by heating as described above, there are fewer unreacted polymerizable groups on the surface than the photopolymerization type resin material, and the reaction with the dental adhesive material is reduced. However, its adhesiveness was a problem.
• Patent Document 1 discloses that a dental adherend including a dental glass-ceramic restoration (especially a glass-ceramic restoration containing lithium disilicate) can be treated without using a conventionally used primer.
• a two-paste dental curable composition has been proposed that has clinically acceptable bond durability.
• a polymerization initiator system for a packaged dental curable composition that provides good mechanical properties, aesthetic properties, and good adhesion is selected from hydroperoxides and diperoxides.
• a polymerization initiator system consisting of an organic peroxide, a transition metal compound, and an ascorbic acid derivative is disclosed.
• Patent Document 3 an organic peroxide, a thiourea derivative, an ascorbate, A polymerization initiator system consisting of a vanadium compound has been proposed.
• Patent Document 1 exhibits high adhesion durability to a glass-ceramic restoration containing lithium disilicate, but thermal polymerization by heating is performed. It has been found that the resin for CAD/CAM currently used has a small number of unreacted polymerizable groups on the surface, and thus there is room for improvement in adhesion durability. Moreover, although the dental curable composition containing the polymerization initiator system disclosed in Patent Documents 2 and 3 has high polymerization curability, there is room for improvement in adhesion durability to CAD/CAM resins. rice field.
• an object of the present invention is to provide a packaged dental curable composition that has good chemical polymerization curable properties and excellent adhesion durability to CAD/CAM resins.
• the present invention includes the following inventions.
• a 1 represents a polymerizable functional group selected from the group consisting of (meth)acryloyloxy group, vinyl group, and epoxy group
• M is a divalent divalent having a straight chain with a carbon chain length of 5 or more represents an aliphatic group or a divalent aromatic group having 6 or more carbon atoms
• a 2 , A 3 , and A 4 each independently represents a hydroxyl group, an alkyl group having 1 to 5 carbon atoms, or 1 carbon atom; is an alkoxy group of ⁇ 5 and at least one of A 2 , A 3 and A 4 is an alkoxy group having 1 to 5 carbon atoms.
• a silane coupling agent F
• a 2 , A 3 and A 4 are each independently a hydroxyl group, an alkyl group having 1 to 3 carbon atoms or an alkoxy group having 1 to 3 carbon atoms, and A 2 , A 3 and A 4 is an alkoxy group having 1 to 3 carbon atoms.
• A2 , A3 , and A4 are each independently a hydroxyl group, a methyl group, or a methoxy group, and at least one of A2 , A3 , and A4 is a methoxy group,
• M is a linear alkylene group with a carbon chain length of 8 or more.
• the silane coupling agent (F) is 5-(meth)acryloyloxypentyltrimethoxysilane, 6-(meth)acryloyloxyhexyltrimethoxysilane, 7-(meth)acryloyloxyheptyltrimethoxysilane, 8-(meth)acryloyloxyoctyltrimethoxysilane, 9-(meth)acryloyloxynonyltrimethoxysilane, 10-(meth)acryloyloxydecyltrimethoxysilane, 11-(meth)acryloyloxyundecyltrimethoxysilane, 8 -(meth)acryloyloxyoctylmethyldimethoxysilane, 10-(meth)acryloyloxydecylmethyldimethoxysilane, 11-(meth)acryloyloxyundecylmethyldimethoxysilane, and (meth)acryloyloxy
• Silane coupling agent (F) is 8-(meth)acryloyloxyoctyltrimethoxysilane, 9-(meth)acryloyloxynonyltrimethoxysilane, 10-(meth)acryloyloxydecyltrimethoxysilane, 11-
• the packaging type according to any one of [1] to [10], which is at least one selected from the group consisting of (meth)acryloyloxyundecyltrimethoxysilane and (meth)acryloyloxymethylphenethyltrimethoxysilane. dental curable composition.
• the present invention it is possible to provide a packaged dental curable composition that has good chemical polymerization curability and excellent adhesion durability to CAD/CAM resins.
• the packaged dental curable composition of the present invention comprises a polymerizable monomer having an acidic group (A), a polymerizable monomer having no acidic group (B), an ascorbic acid compound (C), an organic Peroxide (D), transition metal compound (E), and the following general formula (f-1)
• a 1 represents a polymerizable functional group selected from the group consisting of (meth)acryloyloxy group, vinyl group, and epoxy group
• M is a divalent divalent having a straight chain with a carbon chain length of 5 or more represents an aliphatic group or a divalent aromatic group having 6 or more carbon atoms
• a 2 , A 3 , and A 4 each independently represents a hydroxyl group, an alkyl group having 1 to 5 carbon atoms, or 1 carbon atom; to 5 alkoxy groups, and at least one of A 2 , A 3 and A 4 is an alkoxy group having 1 to 5 carbon atoms.
• a silane coupling agent (F) represented by
• a CAD/CAM resin is thermally polymerized by heating when it is produced by polymerizing and curing, and there are few unreacted polymerizable groups on the surface of the resin.
• the polymerizable monomer (A) having an acidic group of the present invention the polymerizable monomer (B) having no acidic group, the ascorbic acid compound (C), the organic peroxide
• the polymerization initiator system of the composition containing the substance (D) and the transition metal compound (E) has a high polymerization initiation efficiency even under acidic conditions, and the polymerization rate is sufficiently improved, so that the surface of the resin for CAD/CAM is reduced.
• a cross-linking reaction also occurs efficiently with the polymerizable groups.
• the CAD/CAM resin contains a filler (silica, etc.) and a polymerizable monomer ((meth)acrylic acid ester, etc.), and its shape is not particularly limited, and may be block-shaped, disk-shaped, or the like.
• the general formula (f- Since the silane coupling agent (F) represented by 1) has a long spacer portion with a carbon chain length of 5 or more, it exhibits high hydrophobicity and suppresses the hydrolysis reaction.
• the acidic group-containing polymerizable monomer (A) of the present invention is an essential component for the curable dental composition of the present invention to exhibit adhesiveness.
• the polymerizable monomer (A) having an acidic group has the effect of demineralizing tooth substance.
• the polymerizable monomer having an acidic group (A) has at least one acidic group such as a phosphoric acid group, a phosphonic acid group, a pyrophosphate group, a thiophosphoric acid group, a carboxylic acid group, a sulfonic acid group, and acryloyl
• a polymerizable monomer having at least one polymerizable group such as a group, a methacryloyl group, an acrylamide group, or a methacrylamide group.
• a polymerizable monomer having an acidic group (A ) is preferably monofunctional having one of an acryloyl group, a methacryloyl group, an acrylamide group and a methacrylamide group as a polymerizable group.
• Specific examples of the polymerizable monomer (A) having an acidic group include the following.
• Polymerizable monomers having a phosphoric acid group include, for example, 2-(meth)acryloyloxyethyl dihydrogenphosphate, 3-(meth)acryloyloxypropyl dihydrogenphosphate, 4-(meth)acryloyloxybutyldihydrogenphosphate, hydrogen phosphate, 5-(meth)acryloyloxypentyl dihydrogen phosphate, 6-(meth) acryloyloxyhexyl dihydrogen phosphate, 7-(meth) acryloyloxyheptyl dihydrogen phosphate, 8-(meth) acryloyloxy Octyl dihydrogen phosphate, 9-(meth) acryloyloxy nonyl dihydrogen phosphate, 10-(meth) acryloyloxydecyl dihydrogen phosphate, 11-(meth) acryloyloxy undecyl dihydrogen phosphate, 12-(meth) ) acryloyl oxide decy
• Polymerizable monomers having a phosphonic acid group include, for example, 2-(meth)acryloyloxyethylphenylphosphonate, 5-(meth)acryloyloxypentyl-3-phosphonopropionate, 6-(meth)acryloyloxy Hexyl-3-phosphonopropionate, 10-(meth)acryloyloxydecyl-3-phosphonopropionate, 6-(meth)acryloyloxyhexylphosphonoacetate, 10-(meth)acryloyloxydecylphosphonoacetate , acid chlorides, alkali metal salts, ammonium salts and amine salts thereof.
• Examples of the polymerizable monomer having a pyrophosphate group include bis[2-(meth)acryloyloxyethyl] pyrophosphate, bis[4-(meth)acryloyloxybutyl] pyrophosphate, bis[6-( meth)acryloyloxyhexyl], bis[8-(meth)acryloyloxyoctyl]pyrophosphate, bis[10-(meth)acryloyloxydecyl]pyrophosphate, their acid chlorides, alkali metal salts, ammonium salts, and amines Salt etc. are mentioned.
• polymerizable monomers having a thiophosphate group examples include 2-(meth)acryloyloxyethyl dihydrogenthiophosphate, 3-(meth)acryloyloxypropyl dihydrogenthiophosphate, 4-(meth)acryloyloxy butyl dihydrogenthiophosphate, 5-(meth)acryloyloxypentyl dihydrogenthiophosphate, 6-(meth)acryloyloxyhexyl dihydrogenthiophosphate, 7-(meth)acryloyloxyheptyl dihydrogenthiophosphate, 8 -(meth)acryloyloxyoctyl dihydrogenthiophosphate, 9-(meth)acryloyloxynonyl dihydrogenthiophosphate, 10-(meth)acryloyloxydecyl dihydrogenthiophosphate, 11-(meth)acryloyloxyundecyl dihydrogenthiophosphate, 12-(meth)acryloyl oxide dec
• polymerizable monomers having a carboxylic acid group examples include (meth)acrylic acid, 4-[2-[(meth)acryloyloxy]ethoxycarbonyl]phthalic acid, and 4-(meth)acryloyloxyethyltrimellitic acid.
• Polymerizable monomers having a sulfonic acid group include, for example, 2-(meth)acrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl (meth)acrylate, acid chlorides, alkali metal salts, ammonium salts thereof, and amine salts.
• polymerizable monomers (A) having an acidic group polymerizable monomers having a phosphoric acid group, polymerizable monomers having a pyrophosphate group, and polymerizable monomers having a carboxylic acid group is preferred from the viewpoint of exhibiting better adhesion to tooth substance, adhesion to CAD / CAM resin, especially adhesion durability is more excellent, a polymerizable monomer having a phosphoric acid group, and a carboxylic acid A polymerizable monomer having a group is more preferred.
• a (meth)acrylate-based monofunctional polymerizable monomer or carboxylic acid having a phosphoric acid group having an alkyl group having 6 to 20 carbon atoms or an alkylene group having 6 to 20 carbon atoms as a main chain in the molecule A (meth)acrylate-based polymerizable monomer having a group is more preferable, and a (meth)acrylate-based monofunctional polymerizable monomer having a phosphoric acid group having an alkylene group having 8 to 12 carbon atoms as a main chain in the molecule.
• Body is even more preferred.
• 10-methacryloyloxydecyldihydrogen phosphate 4-(meth)acryloyloxyethyltrimellitic acid and 4-(meth)acryloyloxyethyltrimellitic anhydride are particularly preferred, and 10-methacryloyloxydecyldihydrogenphosphate is most preferred.
• the polymerizable monomer (A) having an acidic group may be blended alone or in combination of two or more.
• the content of the polymerizable monomer (A) having an acidic group is not particularly limited as long as the effect of the present invention is exhibited.
• the range is preferably from 1 to 50 parts by mass, more preferably from 2 to 25 parts by mass, and from 2 to 20 parts by mass. A range of 10 parts by mass is more preferred.
• 100% by mass of the total amount of the polymerizable monomer components of the curable dental composition means the polymerizable monomer contained in the first agent and the polymerizable monomer contained in the second agent. It means the case where the sum of the monomers is converted to 100 parts by mass.
• total amount of the curable dental composition means the total amount of the components contained in the first agent and the components contained in the second agent.
• the packaged dental curable composition of the present invention contains a polymerizable monomer (B) having no acidic group.
• the polymerizable monomer (B) having no acidic group is a polymerizable monomer that undergoes a radical polymerization reaction with a polymerization initiator system to polymerize.
• the polymerizable monomer (B) having no acidic group may be used alone or in combination of two or more.
• Preferred examples of the polymerizable monomer (B) having no acidic group include the following hydrophilic polymerizable monomer (B-1) and hydrophobic polymerizable monomer (B-2).
• the hydrophilic polymerizable monomer (B-1) means a polymerizable monomer having a solubility in water at 25° C. of 10% by mass or more. Those having a solubility of 30% by mass or more are preferable, and those capable of dissolving in water at an arbitrary ratio at 25°C are more preferable.
• the hydrophilic polymerizable monomer (B-1) promotes the penetration of the components of the curable dental composition into the dentin and also penetrates into the dentin by itself to form an organic component (collagen) in the dentin. to adhere to.
• hydrophilic polymerizable monomer (B-1) examples include 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate (hereinafter sometimes abbreviated as "HEMA"), and 3-hydroxypropyl (meth)acrylate. , 2-hydroxypropyl (meth)acrylate, 1,3-dihydroxypropyl (meth)acrylate, 2,3-dihydroxypropyl (meth)acrylate, 2-((meth)acryloyloxy)ethyltrimethylammonium chloride, etc.
• HEMA 2-hydroxyethyl methacrylate
• 3-hydroxypropyl (meth)acrylate 2-hydroxypropyl (meth)acrylate, 1,3-dihydroxypropyl (meth)acrylate, 2,3-dihydroxypropyl (meth)acrylate, 2-((meth)acryloyloxy)ethyltrimethylammonium chloride, etc.
• (Meth)acrylic acid ester-based polymerizable monomer bifunctional (meth)acrylic acid ester-based polymerizable monomer such as polyethylene glycol di(meth)acrylate (average addition mole number of oxyethylene group: 9 or more) 2-Hydroxyethyl (meth)acrylate is preferred from the viewpoints of exhibiting superior adhesiveness to tooth substance, adhesiveness to CAD/CAM resins, and particularly excellent adhesion durability.
• “(meth)acryl” means acryl and methacryl, and expressions such as “(meth)acryloyl” and "(meth)acrylate” are the same.
• the hydrophobic polymerizable monomer (B-2) means a crosslinkable polymerizable monomer having a solubility in water at 25°C of less than 10% by mass.
• Examples of the hydrophobic polymerizable monomer (B-2) include aromatic compound-based monofunctional polymerizable monomers and bifunctional polymerizable monomers, and aliphatic compound-based monofunctional polymerizable monomers. Examples include monomers, bifunctional polymerizable monomers, and trifunctional or higher polymerizable monomers.
• the hydrophobic polymerizable monomer (B-2) improves the mechanical strength, handleability, etc. of the cured product of the dental curable composition.
• aromatic compound-based monofunctional polymerizable monomers examples include benzyl (meth)acrylate, p-cumyl-phenoxyethylene glycol (meth)acrylate, and 2-phenoxybenzyl (meth)acrylate. Among these, benzyl methacrylate and p-cumyl-phenoxyethylene glycol methacrylate are preferred.
• aromatic compound-based bifunctional polymerizable monomers include aromatic di(meth)acrylates.
• aromatic compound-based bifunctional polymerizable monomers include 2,2-bis((meth)acryloyloxyphenyl)propane, 2,2-bis[4-(3-acryloyloxy-2- hydroxypropoxy)phenyl]propane, 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]propane (hereinafter sometimes abbreviated as “Bis-GMA”), 2,2-bis (4-(meth)acryloyloxyethoxyphenyl)propane, 2,2-bis(4-(meth)acryloyloxypolyethoxyphenyl)propane, 2,2-bis(4-(meth)acryloyloxydiethoxyphenyl)propane , 2,2-bis(4-(meth)acryloyloxytriethoxyphenyl)propane, 2,2-bis(4-(meth)acryloyl
• Examples of aliphatic compound-based monofunctional polymerizable monomers include methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, isobornyl (meth) acrylate, stearyl (meth) acrylate, dicyclopenta Nil (meth)acrylate, butoxydiethylene glycol (meth)acrylate, methoxypolyethylene glycol (meth)acrylate and the like. Among these, isobornyl methacrylate is preferred.
• aliphatic compound-based bifunctional polymerizable monomers examples include erythritol di(meth)acrylate, sorbitol di(meth)acrylate, mannitol di(meth)acrylate, pentaerythritol di(meth)acrylate, and dipentaerythritol.
• glycerol dimethacrylate triethylene glycol di(meth)acrylate, neopentyl glycol dimethacrylate, 2,2,4-trimethylhexamethylenebis(2-carbamoyloxyethyl) dimethacrylate and 1,2-bis(3 -methacryloyloxy-2-hydroxypropyloxy)ethane is preferred.
• trifunctional or higher polymerizable monomers examples include trimethylolpropane tri(meth)acrylate, trimethylolethane tri(meth)acrylate, trimethylolmethane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, Pentaerythritol tetra(meth)acrylate, dipentaerythritol tri(meth)acrylate, dipentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, N,N-(2,2,4-trimethylhexamethylene) bis[2-(aminocarboxy)propane-1,3-diol]tetramethacrylate, 1,7-diacryloyloxy-2,2,6,6-tetraacryloyloxymethyl-4-oxaheptane and the like.
• HEMA HEMA
• Bis-GMA D-2.6E
• TEGDMA TEGDMA
• polymerizable monomer (B) having no acidic group hydrophilic polymerizable monomer (B-1) and hydrophobic polymerizable monomer (B-2)
• B-1) and hydrophobic polymerizable monomer (B-2) may be used alone. may be contained, or may be blended in combination of two or more.
• the content of the polymerizable monomer (B) that does not contain an acidic group is not particularly limited as long as the effect of the present invention is exhibited, but the composition has high permeability to the tooth substance and excellent adhesiveness, and the cured product is From the viewpoint of having sufficient mechanical strength, it is preferably in the range of 50 to 99 parts by mass, and 60 to 98 parts by mass, based on 100 parts by mass of the total amount of polymerizable monomer components in the packaged dental curable composition of the present invention. A range of parts by weight is more preferred, and a range of 70 to 95 parts by weight is even more preferred.
• the packaged dental curable composition of the present invention contains an ascorbic acid compound (C), an organic peroxide (D), and a transition metal compound (E) as a polymerization initiator system.
• the packaged dental curable composition of the present invention has a good chemical polymerization curable property by combining such a polymerization initiator system and using it together with other components, and can be used for CAD/CAM. Adhesive durability to resin for use is excellent.
• Examples of the ascorbic acid compound (C) include salts, esters, and ethers of ascorbic acid. Among these, salts and esters of ascorbic acid are preferable because the effects of the present invention are more excellent.
• the polymerization initiation efficiency is high even under acidic conditions, the polymerization rate can be sufficiently improved, good chemical polymerization curability can be obtained, and CAD/
• the cross-linking reaction between the polymerizable groups and the components contained in the packaged curable dental composition of the present invention occurs efficiently. This effect and the effect of suppressing the hydrolysis reaction due to the use of the silane coupling agent (F) act synergistically without interfering with each other. excellent in nature.
• Salts of ascorbic acid include sodium L-ascorbate, calcium L-ascorbate, potassium ascorbate, and stereoisomers thereof (eg, sodium isoascorbate, etc.). Among these, sodium L-ascorbate is preferred.
• Esters of ascorbic acid include those formed by reacting one or more of the hydroxy groups of ascorbic acid with a carboxylic acid.
• carboxylic acids include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, cerotic acid, myristoleic acid, palmitoleic acid, sapienic acid, and oleic acid.
• C6-C30 saturated or unsaturated fatty acids such as acids, elaidic acid, vaccenic acid, linoleic acid, linoleic acid, ⁇ -linolenic acid, arachidonic acid, eicosapentaenoic acid, erucic acid, and docosahexaenoic acid is mentioned.
• the number of carbon atoms in the fatty acid is preferably 10-28, more preferably 12-26, even more preferably 14-24.
• esters of stearic acid and ascorbic acid and esters of palmitic acid and ascorbic acid are preferably used.
• Ethers of ascorbic acid include ethyl ascorbate and cetyl ascorbate.
• the ascorbic acid compound (C) may be blended alone or in combination of two or more.
• the content of the ascorbic acid compound (C) is determined from the viewpoint of curability, mechanical strength of the cured product, and adhesion to tooth substance and CAD/CAM resin, particularly adhesion durability.
• the range is preferably 0.01 to 8 parts by mass, more preferably 0.1 to 5 parts by mass, and 0.5 to
• the range of 2 parts by mass is more preferable, the range of 0.8 to 2 parts by mass is particularly preferable, and the range of 1.2 to 2 parts by mass is most preferable from the viewpoint of particularly excellent effects.
• the content of the ascorbic acid compound (C) is determined from the viewpoint of curability, mechanical strength of the cured product, and adhesion to tooth substance and CAD/CAM resin, especially adhesion durability.
• the total amount of the dental curable composition is preferably 0.001 to 7.0% by mass, more preferably 0.01 to 5.0% by mass, further preferably 0.1 to 2.0% by mass, and 0 2 to 1.5% by mass is particularly preferable, and 0.4 to 1.5% by mass is most preferable from the viewpoint of particularly excellent effects.
• the ascorbic acid compound (C) may be dissolved in the composition or dispersed in the composition in the form of powder.
• the ascorbic acid compound (C) When the ascorbic acid compound (C) is dispersed in the form of a powder, if the average particle size is too large, the operability or curability tends to decrease. More preferred.
• the average particle size of the ascorbic acid compound (C) powder is determined by image analysis using image analysis type particle size distribution measurement software (Mac-View; manufactured by Mountec Co., Ltd.) based on electron micrographs of 100 or more particles. After that, it can be calculated as the volume average particle size.
• the shape of the particles when the ascorbic acid compound (C) is dispersed in the form of powder includes various shapes such as spherical, needle-like, plate-like, and crushed shapes, but is not particularly limited.
• the ascorbic acid compound (C) can be produced by a conventionally known method such as a pulverization method, a freeze-drying method, a reprecipitation method, etc. From the viewpoint of the average particle size of the resulting powder, the pulverization method and the freeze-drying method are preferable. .
• Organic peroxides (D) include diacyl peroxides, peroxyesters, dialkyl peroxides, peroxyketals, ketone peroxides and hydroperoxides.
• diacyl peroxides include benzoyl peroxide, 2,4-dichlorobenzoyl peroxide, m-toluoyl peroxide and the like.
• peroxyesters include t-butylperoxybenzoate, bis(t-butylperoxy)isophthalate, 2,5-dimethyl-2,5-bis(benzoylperoxy)hexane, t-butylperoxy-2-ethyl hexanoate, t-butylperoxyisopropyl carbonate and the like.
• dialkyl peroxides include dicumyl peroxide, di-t-butyl peroxide, lauroyl peroxide and the like.
• peroxyketals include 1,1-bis(t-butylperoxy)3,3,5-trimethylcyclohexane, 1,1-bis(t-butylperoxy)cyclohexane, 1,1-bis(t- hexylperoxy)cyclohexane and the like.
• ketone peroxides include methyl ethyl ketone peroxide, cyclohexanone peroxide, methyl acetoacetate peroxide and the like.
• hydroperoxides include t-butyl hydroperoxide, cumene hydroperoxide, p-diisopropylbenzene hydroperoxide, 1,1,3,3-tetramethylbutyl hydroperoxide and the like.
• hydroperoxides and peroxyesters are particularly preferred.
• hydroperoxides t-butyl hydroperoxide, cumene hydroperoxide, and 1,1,3,3-tetramethylbutyl hydroperoxide are preferably used.
• peroxyesters t-butyl peroxybenzoate is preferably used.
• the organic peroxide (D), in combination with other components, is excellent in chemical polymerization curability, adhesion to CAD/CAM resins, especially adhesion durability.
• the organic peroxide (D) may be blended alone or in combination of two or more.
• the content of the organic peroxide (D) determines the polymerizability in the packaged dental curable composition of the present invention from the viewpoint of chemical polymerization curability, adhesion to CAD/CAM resins, and particularly adhesion durability.
• the range of 0.01 to 10 parts by mass is preferable, the range of 0.1 to 5 parts by mass is more preferable, and the range of 0.5 to 3 parts by mass is even more preferable with respect to 100 parts by mass of the total amount of the monomer components. .
• the content of the organic peroxide (D) is within the above range, so that the desired operation time can be adjusted.
• a copper compound and a vanadium compound are preferably used as the transition metal compound (E).
• Copper compounds include carboxylate copper (II), ⁇ -diketone copper (II), ⁇ -ketoester copper (II), copper alkoxide, copper dithiocarbamate, salts of copper and inorganic acids, and the like.
• Copper (II) carboxylates include copper (II) citrate, copper (II) acetate, copper (II) phthalate, copper (II) tartrate, copper (II) oleate, copper (II) octylate, octene copper (II) acid, copper (II) naphthenate, copper (II) methacrylate, copper (II) 4-cyclohexylbutyrate, and the like.
• ⁇ -diketone copper includes acetylacetone copper (II), trifluoroacetylacetone copper (II), hexafluoroacetylacetone copper (II), 2,2,6,6-tetramethyl-3,5-heptanedionato copper ( II), benzoylacetone copper (II), and the like.
• the ⁇ -ketoester copper (II) includes ethyl copper (II) acetoacetate and the like.
• Copper alkoxides include copper (II) methoxide, copper (II) ethoxide, copper (II) isopropoxide, copper (II) 2-(2-butoxyethoxy) ethoxide, copper (II) 2-(2-methoxyethoxy ) ethoxide and the like.
• copper dithiocarbamate examples include copper (II) dimethyldithiocarbamate.
• Salts of copper and inorganic acids include copper(II) nitrate, copper(II) bromide and copper(II) chloride. These may be used individually by 1 type, and may be used in combination of 2 or more types as appropriate.
• carboxylic acid copper (II), ⁇ -diketone copper (II), ⁇ -ketoester copper (II) are preferable from the viewpoint of solubility and reactivity with respect to the polymerizable monomer, and copper (II) acetate , acetylacetone copper(II) are more preferred.
• the vanadium compounds are preferably IV-valent and/or V-valent vanadium compounds.
• IV- and/or V-valent vanadium compounds include divanadium tetroxide (IV), vanadyl acetylacetonate (IV), vanadium stearate oxide (IV), oxovanadium oxalate (IV), and vanadyl sulfate.
• vanadyl tetroxide (IV), vanadyl sulfate (IV), vanadyl acetylacetonate (IV), bis(maltrate) oxovanadium (IV) are preferable, and vanadyl acetylacetonate (IV) and Bis(maltrate)oxovanadium(IV) is more preferred.
• a vanadium compound can be used individually by 1 type or in combination of 2 or more types.
• the transition metal compound (E), in combination with other components, is excellent in chemical polymerization curability, adhesion to CAD/CAM resins, especially adhesion durability.
• the content of the transition metal compound (E) is determined from the viewpoint of chemical polymerization curability, adhesion to CAD/CAM resins, particularly adhesion durability. With respect to 100 parts by mass of the total amount of the monomer components, the range is preferably 0.0001 to 1 part by mass, more preferably 0.0005 to 0.5 parts by mass, and 0.001 to 0.2 parts by mass. Ranges are more preferred. Moreover, the content of the transition metal compound (E) is within the above range, so that the desired operation time can be adjusted.
• a 1 in the general formula (f-1) of the silane coupling agent (F) represents a polymerizable functional group selected from the group consisting of a (meth)acryloyloxy group, a vinyl group, and an epoxy group
• M represents carbon.
• a 2 , A 3 , and A 4 each independently represent a hydroxyl group; , an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms, and at least one of A 2 , A 3 and A 4 is an alkoxy group having 1 to 5 carbon atoms.
• a 1 is a copolymer of a silane coupling agent (F) and a polymerizable monomer (a polymerizable monomer having an acidic group (A) and a polymerizable monomer having no acidic group (B))
• a (meth)acryloyloxy group is preferred, and a methacryloyloxy group is more preferred.
• the divalent aliphatic group for M may be a linear divalent aliphatic group having a carbon chain length of 5 or more, and may have a branched chain in addition to the linear chain. It is thought that having a straight chain with a carbon chain length of 5 or more facilitates alignment of the molecules when bound on a CAD/CAM resin, and can increase the hydrophobization of the adhesion interface. Moreover, as the aliphatic group, a linear aliphatic group having a carbon chain length of 5 or more is preferable from the viewpoint of further increasing the hydrophobization of the adhesion interface.
• the aliphatic group may consist only of carbon atoms and hydrogen atoms, or may contain heteroatoms such as oxygen, nitrogen and sulfur atoms.
• the linear carbon chain length of the aliphatic group of M is preferably 6 or more, more preferably 7 or more, and even more preferably 8 or more, in order to further improve the hydrophobicity of the adhesion interface.
• the linear carbon chain length of the aliphatic group of M is preferably 20 or less, more preferably 15 or less, and even more preferably 12 or less.
• the aliphatic group includes an alkylene group, an alkenylene group, and an alkynylene group, with an alkylene group being preferred. Examples of alkylene groups include pentamethylene, hexamethylene, heptamethylene, octamethylene, nonamethylene, decamethylene, undecamethylene and dodecamethylene groups.
• M is a linear alkylene group having a carbon chain length of 8 or more, containing a silane coupling agent (F), a package type and dental curable compositions.
• the aliphatic group or aromatic group of M may contain any divalent group.
• Optional divalent groups include bonds other than carbon-carbon bonds such as ether groups, ester groups, amide groups, sulfonyl groups, urethane groups, thioether groups, and the like.
• the number of carbon atoms in the alkylene group is preferably 1-15, more preferably 1-10, still more preferably 1-8, and particularly preferably 1-6.
• the divalent aliphatic group and divalent aromatic group of M may have a substituent.
• substituents include halogen atoms; functional groups not containing carbon atoms such as hydroxyl, oxo, amino, cyano, and nitro groups; alkyl groups having 1 to 6 carbon atoms; alkoxy groups having 1 to 6 carbon atoms; Examples include alkenyl groups of numbers 2 to 6.
• the number of substituents is preferably 1-10, more preferably 1-8, even more preferably 1-4.
• the divalent aromatic group for M may be a monocyclic group containing only carbon atoms or a heterocyclic group.
• a nitrogen atom, a sulfur atom, an oxygen atom, etc. are mentioned as a heteroatom contained in a heterocyclic group.
• the number of heteroatoms contained in the heterocyclic group is preferably 1-3.
• the number of carbon atoms in the aromatic group is 6 or more, preferably 7 or more, more preferably 8 or more, and even more preferably 9 or more.
• the number of carbon atoms in the aromatic group is preferably 35 or less, more preferably 20 or less, and even more preferably 16 or less.
• the divalent aromatic group includes an arylene group having an alkylene group and an arylene group.
• the arylene group includes a phenylene group; a polycyclic aromatic group such as a naphthylene group, an anthracenylene group, a phenanthrylene group, a biphenylene group, and a fluorenylene group.
• the alkylene group of the arylene group having an alkylene group includes methylene group, ethylene group, n-propylene group, isopropylene group, butylene group, pentylene group, hexylene group, heptylene group, octylene group, nonylene group, decylene group and dodecylene group. etc.
• both of the two bonds of the aromatic group of M may be bonded to an alkylene group.
• the arylene group having an alkylene group examples include an ethylenephenylene group, a diethylenephenylene group, a triethylenephenylene group, a propylenephenylene group and a butylenephenylene group.
• the aromatic group is an arylene group having an alkylene group having a substituent
• the substituent may be on the aromatic ring or on the alkylene group.
• the aromatic group for M an arylene group having an alkylene group is preferred.
• the bond of the divalent aromatic group is preferably located at the para-position of the aromatic ring.
• the number of carbon atoms in the alkyl groups of A 2 , A 3 and A 4 is preferably 1 to 3, more preferably 1.
• the number of carbon atoms in the alkoxy groups of A 2 , A 3 and A 4 is preferably 1 to 3, more preferably 1 from the viewpoint of adhesion durability to CAD/CAM resins.
• Alkoxy groups for A 2 , A 3 and A 4 include methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy and tert-butoxy groups.
• the alkyl group includes methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group and the like.
• the alkoxy groups of A 2 , A 3 and A 4 are more preferably methoxy groups from the viewpoint of adhesion durability to CAD/CAM resins.
• the silane coupling agent (F) in the curable dental composition separately from the surface treatment agent for the filler, good adhesion to CAD/CAM resin can be obtained even when no primer is used. Durability can be obtained. This is because the hydrolysis reaction of the chemical bond between the silica in the CAD/CAM resin and the silane coupling agent in the dental curable composition, which causes a decrease in adhesion durability, is By using a silane coupling agent (F) containing a compound having a long spacer portion, the adhesion interface is sufficiently hydrophobized due to the high hydrophobicity of the silane coupling agent (F), suppressing the hydrolysis reaction. Because we can.
• the polymerization initiator system has a high polymerization initiation efficiency even under acidic conditions, and the polymerization rate is sufficiently improved, so that the polymerizable groups on the surface of the CAD/CAM resin are In spite of the small amount, the crosslinking reaction between the polymerizable groups and the components contained in the packaged dental curable composition of the present invention occurs efficiently, and they synergize without interfering with each other's effects. As a result of its effective action, excellent adhesion durability to CAD/CAM resins can be obtained.
• Silane coupling agents (F) may be used alone or in combination of two or more.
• any known agent satisfying general formula (f-1) can be used without limitation.
• Specific examples of the silane coupling agent (F) include vinyl group-containing silane coupling agents such as vinylhexyltrimethoxysilane, vinylheptyltrimethoxysilane, vinyloctyltrimethoxysilane; 5-(meth)acryloyloxypentyltrimethoxy Silane, 6-(meth)acryloyloxyhexyltrimethoxysilane, 7-(meth)acryloyloxyheptyltrimethoxysilane, 8-(meth)acryloyloxyoctyltrimethoxysilane, 9-(meth)acryloyloxynonyltrimethoxysilane , 10-(meth)acryloyloxydecyltrimethoxysilane, 11-(meth)acryloy
• silane coupling agents (F) 8-(meth)acryloyloxyoctyltrimethoxysilane and 9-(meth)acryloyloxynonyl are particularly preferred from the viewpoint of adhesion durability and handleability to CAD/CAM resins. Trimethoxysilane, 10-(meth)acryloyloxydecyltrimethoxysilane, 11-(meth)acryloyloxyundecyltrimethoxysilane, and (meth)acryloyloxymethylphenethyltrimethoxysilane are preferably used.
• the content of the silane coupling agent (F) is preferably 0.1 to 10.0% by mass based on the total amount of the packaged dental curable composition of the present invention in terms of excellent adhesive strength.
• 0.5 to 9.0% by mass is more preferable, 1.0 to 8.0% by mass is more preferable, and 1.2 to 7.0% by mass is Especially preferred.
• the packaging is divided into a first agent containing the polymerizable monomer (A) having an acidic group and a second agent containing the silane coupling agent (F). type of dental hardenable composition.
• a polymerizable monomer (A) having an acidic group and a silane It is preferable to package and mix the coupling agent (F).
• the first and second agents are At least one may contain a filler (G).
• any filler can be used as the filler (G) as long as it does not impair the effects of the present invention, including inorganic fillers, organic fillers, and composite fillers of inorganic fillers and organic fillers.
• the filler (G) may be blended alone or in combination of two or more.
• the average particle size of the filler (G) is preferably 0.001-10 ⁇ m, more preferably 0.001-5 ⁇ m.
• inorganic fillers examples include silica; silica-based minerals such as kaolin , clay , mica , and mica; Ceramics and glasses containing 2 O 3 , SrO, ZnO, CaO, P 2 O 5 , Li 2 O, Na 2 O and the like are included. Glasses include lithium borosilicate glass, borosilicate glass, bioglass, lanthanum glass, barium glass, strontium glass, soda glass, zinc glass, and fluoroaluminosilicate glass.
• Inorganic fillers include crystalline quartz, hydroxyapatite, alumina, titanium oxide, yttrium oxide, zirconia, barium sulfate, aluminum hydroxide, sodium fluoride, potassium fluoride, sodium monofluorophosphate, lithium fluoride, and ytterbium fluoride. is also preferably used. Fine particle silica having an average particle size of 0.001 to 0.1 ⁇ m is preferably used in terms of adhesiveness and handleability.
• a filler (G) is further included, and the filler (G) is an inorganic filler having an average particle size of 0.001 ⁇ m or more and 0.1 ⁇ m or less, and an average particle size of more than 0.1 ⁇ m and 10 ⁇ m or less. and an inorganic filler.
• a commercially available product may be used as the inorganic filler.
• the average particle size of the inorganic filler means the average particle size before the surface treatment.
• organic fillers examples include polymethyl methacrylate, polyethyl methacrylate, polyfunctional methacrylate polymers, polyamide, polystyrene, polyvinyl chloride, chloroprene rubber, nitrile rubber, and styrene-butadiene rubber.
• Composite fillers of inorganic fillers and organic fillers include those in which inorganic fillers are dispersed in organic fillers, and inorganic/organic composite fillers in which inorganic fillers are coated with various polymers.
• the filler (G) may be surface-treated in advance with a known surface treatment agent such as a silane coupling agent before use.
• a known surface treatment agent such as a silane coupling agent
• surface treatment agents include vinyltrimethoxysilane, vinyltriethoxysilane, vinyltrichlorosilane, vinyltri( ⁇ -methoxyethoxy)silane, ⁇ -methacryloyloxypropyltrimethoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -mercaptopropyltrimethoxysilane, ⁇ -aminopropyltriethoxysilane and the like.
• the average particle size (average primary particle size) can be determined by a laser diffraction scattering method or electron microscope observation of particles.
• the laser diffraction scattering method is convenient for measuring the particle size of 0.1 ⁇ m or more
• the electron microscope observation is convenient for measuring the particle size of ultrafine particles of less than 0.1 ⁇ m.
• the standard 0.1 ⁇ m is a value measured by a laser diffraction scattering method.
• a 0.2% sodium hexametaphosphate aqueous solution is used as a dispersion medium, and the particle size distribution can be measured on a volume basis with a laser diffraction particle size distribution analyzer (SALD-2300, manufactured by Shimadzu Corporation).
• a scanning electron microscope (SU3800, S-4000, manufactured by Hitachi High-Technologies Corporation, etc.) can be used for electron microscope observation.
• For electron microscopic observation take an electron micrograph of the particles, and measure the particle diameter of the particles (200 or more) observed in the unit field of view of the photograph, using image analysis type particle size distribution measurement software (Mac-View (manufactured by Mountech Co., Ltd.) )).
• Mac-View manufactured by Mountech Co., Ltd.
• the particle diameter is obtained as an arithmetic mean value of the longest length and the shortest length of the particles, and the average primary particle diameter is calculated from the number of particles and their particle diameters.
• the content of the filler (G) is not particularly limited as long as the effect of the present invention is exhibited.
• the range of 20 to 500 parts by mass is preferable, the range of 50 to 300 parts by mass is more preferable, and the range of 100 to 250 parts by mass is even more preferable. Within these ranges, sufficient X-ray opacity of the cured product or sufficient mechanical strength can be obtained, and sufficient operability of the paste can be obtained.
• the content of the filler (G) is not particularly limited as long as the effect of the present invention is exhibited, but is preferably 50 to 97% by mass, preferably 55 to 97% by mass, based on the total amount of the packaged dental curable composition of the present invention. 95% by mass is more preferable, and 60 to 90% by mass is even more preferable.
• the packaged dental curable composition of the present invention may contain a ligand compound.
• the ligand compound is at least one compound selected from the group consisting of ligands containing phosphorus atoms and ligands containing nitrogen atoms.
• a ligand containing a phosphorus atom contains a phosphorus atom as a coordinating atom.
• a ligand containing a nitrogen atom contains a nitrogen atom as a coordinating atom.
• An embodiment includes a packaged dental curable composition that further contains a ligand compound.
• a packaged dental curable composition containing a ligand compound also has good chemical polymerization curability and excellent adhesion durability to a CAD/CAM resin.
• a preferred embodiment includes a packaged dental curable composition in which the ligand compound contains a ligand containing a nitrogen atom.
• Another preferred embodiment includes a packaged dental curable composition in which the ligand compound contains a ligand containing a phosphorus atom.
• ligands containing phosphorus atoms include phosphine ligands and phosphite ligands.
• Specific examples of the ligand containing a phosphorus atom include compounds represented by the following general formula (1), compounds represented by the general formula (2), compounds represented by the general formula (3) and A compound represented by the general formula (4) and the like can be mentioned.
• One ligand containing a phosphorus atom may be used alone, or two or more thereof may be used in combination.
• R 1 to R 15 each independently represent a hydrogen atom, a halogen atom, a polar group, an optionally substituted alkyl group, or an optionally substituted alkoxy group.
• R 16 to R 35 each independently represent a hydrogen atom, a halogen atom, a polar group, an optionally substituted alkyl group, or an optionally substituted alkoxy group, and X 1 represents an optionally substituted divalent aliphatic group.
• Z 1 to Z 3 are each independently a hydrogen atom, a halogen atom, an optionally substituted alkyl group, or an optionally substituted alkoxy group, and Z 1 to Z 3 is a hydrogen atom.
• P( OY1 ) 3 (4) (Y 1 each independently represent an optionally substituted alkyl group or an optionally substituted aryl group.)
• the ligands containing phosphorus atoms from the viewpoint of curability, mechanical strength of the cured product, and adhesion to tooth substance and CAD/CAM resin, especially adhesion durability, the ligand represented by the above general formula (1) and compounds represented by general formula (2) are preferred.
• R 1 to R 15 are preferably a hydrogen atom, an optionally substituted alkyl group, or an optionally substituted alkoxy group.
• R 16 to R 35 are preferably a hydrogen atom, an optionally substituted alkyl group, or an optionally substituted alkoxy group.
• Z 1 to Z 3 are preferably hydrogen atoms, optionally substituted alkyl groups, or optionally substituted alkoxy groups.
• the optionally substituted alkyl group of R 1 to R 15 may be linear or branched.
• the number of carbon atoms in the alkyl groups of R 1 to R 15 is not particularly limited, preferably 1 to 12, more preferably 1 to 6, even more preferably 1 to 4, and particularly preferably 1 to 3.
• Alkyl groups represented by R 1 to R 15 include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group and isopentyl group.
• the alkyl groups of R 1 to R 15 may be unsubstituted.
• substituents for the alkyl groups of R 1 to R 15 include halogen atoms (fluorine atom, chlorine atom, bromine atom, iodine atom), hydroxy groups, alkoxy groups having 1 to 6 carbon atoms, and A dialkylamino group having an alkyl group, an amino group, and the like can be mentioned.
• Halogen atoms of R 1 to R 15 include fluorine, chlorine, bromine and iodine atoms.
• Polar groups of R 1 to R 15 include an acid anhydride group, a carboxylic acid group, a carboxylic acid ester group, a carboxylic acid chloride group, a carboxylic acid amide group, a carboxylic acid group, a sulfonic acid group, a sulfonic acid ester group, and a sulfone group.
• carboxylic acid group, carboxylic acid ester group, carboxylic acid chloride group, carboxylic acid amide group, carboxylic acid group, sulfonic acid group, sulfonic acid ester group, sulfonic acid chloride group, sulfone Acid amide group, sulfonate group, aldehyde group are preferred, carboxylic acid group, carboxylic acid ester group, carboxylic acid chloride group, carboxylic acid group, sulfonic acid group, sulfonic acid ester group, sulfonate chloride group, sulfonate group , aldehyde groups
• Salts of carboxylic acid groups and sulfonic acid groups include alkali metal salts such as lithium, sodium and potassium, and alkaline earth metal salts such as magnesium, calcium, strontium, barium and radium.
• the number of polar groups is preferably 1-9, more preferably 1-5, even more preferably 1-3.
• R 1 to R 15 are substituted alkyl groups, specific examples thereof include trifluoromethyl groups.
• the optionally substituted alkoxy group of R 1 to R 15 may be linear or branched.
• the number of carbon atoms in the alkoxy groups of R 1 to R 15 is not particularly limited, preferably 1 to 12, more preferably 1 to 6, even more preferably 1 to 4, and particularly preferably 1 to 3.
• Alkoxy groups for R 1 to R 15 include methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy, tert-butoxy, n-pentyloxy and isopentyloxy.
• Substituents for the alkoxy groups for R 1 to R 15 include the same substituents for the alkyl groups for R 1 to R 15 .
• R 1 to R 15 may be the same or different.
• R 1 to R 15 may be partially the same hydrogen atoms, alkyl groups or alkoxy groups, for example.
• the optionally substituted alkyl groups R 16 to R 35 are the same as the optionally substituted alkyl groups R 1 to R 15 .
• the optionally substituted alkoxy groups R 16 to R 35 are the same as the optionally substituted alkoxy groups R 1 to R 15 .
• the halogen atoms for R 16 to R 35 are the same as the halogen atoms for R 1 to R 15 .
• the polar groups for R 16 to R 35 are the same as the polar groups for R 1 to R 15 .
• the optionally substituted divalent aliphatic group of X 1 may be linear or branched.
• the number of carbon atoms in the divalent aliphatic group is preferably 1-20, more preferably 1-16, still more preferably 1-12, and particularly preferably 1-8.
• the divalent aliphatic group for X 1 includes an alkylene group, an alkenylene group, and an alkynylene group, with an alkylene group being preferred.
• Alkylene groups include methylene, ethylene, propylene, butylene, methylpropylene, dimethylpropylene, pentamethylene, hexamethylene, heptamethylene, octamethylene, nonamethylene, decamethylene, and undecamethylene. group, dodecamethylene group, and the like.
• Substituents for the divalent aliphatic group of X 1 include the same substituents for the alkyl groups of R 1 to R 15 .
• Z 1 to Z 3 may be the same or different.
• the optionally substituted alkyl groups Z 1 to Z 3 are the same as the optionally substituted alkyl groups R 1 to R 15 .
• At least one of Z 1 to Z 3 may be a hydrogen atom, and Z 1 to Z 3 may all be hydrogen atoms.
• Specific examples of Ar include the following groups.
• one or two of Z 1 to Z 3 are hydrogen atoms, and the other one or two of Z 1 to Z 3 are straight or branched chains substituted with halogen atoms.
• the optionally substituted alkoxy groups Z 1 to Z 3 are the same as the optionally substituted alkoxy groups R 1 to R 15 .
• a preferred embodiment includes a phosphine compound in which all Ars in the compound represented by general formula (3) are 3,5-dimethylphenyl groups.
• Other preferred embodiments include phosphine compounds in which all Ars in the compound represented by general formula (3) are 4-methylphenyl groups.
• three Y 1 may be the same or different.
• the optionally substituted alkyl group for Y 1 is the same as the optionally substituted alkyl group for R 1 to R 15 .
• the number of carbon atoms in the optionally substituted aryl group of Y 1 is preferably 6-20, more preferably 6-14, even more preferably 6-10.
• the substituents for the aryl group of Y 1 include those similar to the substituents for the alkyl groups of R 1 to R 15 .
• the aryl group which may have a substituent for Y 1 includes a phenyl group, a biphenyl group, an indenyl group, a naphthyl group, an anthryl group, a phenanthryl group, a fluorenyl group and a pyrenyl group; a tolyl group, a xylyl group and a trimethylphenyl group. , an ethylphenyl group, an isopropylphenyl group, a phenyl group substituted with an alkyl group such as a tetramethylphenyl group, and the like.
• One preferred embodiment includes phosphite compounds in which three Y 1 are 1,1,1,3,3,3-hexafluoro-2-propyl groups.
• Other preferred embodiments include phosphite compounds in which three Y 1 are 2,4,-di-tert-butylphenyl groups.
• Examples of monodentate phosphine compounds represented by the general formula (1) include triphenylphosphine, diphenyl(o-tolyl)phosphine, tri(o-tolyl)phosphine, tri(p-tolyl)phosphine, tris(2,4, 6-trimethylphenyl)phosphine, tris(2,6-dimethylphenyl)phosphine, tris(2-methoxyphenylphosphine), tris(4-methoxyphenylphosphine), tris(2,6-dimethoxyphenyl)phosphine (hereinafter, " DMPP”), diphenyl (2-methoxyphenyl) phosphine, phosphine compounds having an electron-donating group such as 4-(dimethylamino) triphenylphosphine; (2-fluorophenyl) diphenylphosphine, (2 -chlorophenyl)diphenylphosphine, (2-
• Examples of the bidentate phosphine compound of the general formula (2) include bis(diphenylphosphino)methane, 1,2-bis(diphenylphosphino)ethane, 1,3-bis(diphenylphosphino)propane, 1,4- Phosphine compounds such as bis(diphenylphosphino)butane, 1,5-bis(diphenylphosphino)pentane, 1,6-bis(diphenylphosphino)hexane and the like can be mentioned.
• Examples of the bidentate phosphine compound of the general formula (3) include ( ⁇ )-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (hereinafter sometimes abbreviated as “BINAP”), ( ⁇ )-2,2′-bis(di-p-tolylphosphino)-1,1′-binaphthyl, ( ⁇ )-2,2′-bis(di-p-fluorophosphino)-1,1′- Binaphthyl, ( ⁇ )-2,2'-bis(di-p-trifluoromethylphosphino)-1,1'-binaphthyl, ( ⁇ )-2,2'-bis[di(3,5-xylyl) phosphino]-1,1'-binaphthyl and the like.
• BINAP diphenylphosphino-1,1′-binaphthyl
• Examples of the phosphite compound of the general formula (4) include trimethylphosphite, triethylphosphite, tris(1,1,1,3,3,3-hexafluoro-2-propyl)phosphite, triphenylphosphite, and tris(2,4-di-t-butylphenyl)phosphite.
• Examples of the ligand containing a nitrogen atom include a compound represented by the general formula (5), a compound represented by the general formula (6), and a polydentate ligand (7) containing a nitrogen-containing heterocyclic ring. etc.
• the ligands containing nitrogen atoms may be used singly or in combination of two or more.
• R 36 R 37 NX 2 -NR 38 R 39 (5) (R 36 to R 39 each independently represent an optionally substituted alkyl group, and X 2 represents an optionally substituted divalent aliphatic group.)
• R 40 , R 41 and R 42 each independently represent an optionally substituted alkyl group
• X 3 and X 4 each independently well represents a divalent aliphatic group which may contain an oxygen atom and/or a nitrogen atom
• m and n each independently represent an integer of 1 or more
• Y 2 has a substituent any two or more of R 40 , R 41 , R 42 and Y 2 may together form a ring.
• 42 , X 3 and X 4 may be the same or different when there are a plurality of them.
• the optionally substituted alkyl groups R 36 to R 39 are the same as the optionally substituted alkyl groups R 1 to R 15 .
• the divalent aliphatic group optionally having substituent(s) for X 2 is the same as the divalent aliphatic group optionally having substituent(s) for X 1 .
• the optionally substituted alkyl groups for R 40 , R 41 and R 42 are the same as the optionally substituted alkyl groups for R 1 to R 15 .
• the number of carbon atoms in the monoalkylamino group (-NHR a (R a represents an alkyl group)) and the dialkylamino group (-NR b R c (R b and R c represent an alkyl group)) of Y 2 is particularly 1 to 12 are preferred, 1 to 6 are more preferred, 1 to 4 are even more preferred, and 1 to 3 are particularly preferred.
• alkyl group of the monoalkylamino group and dialkylamino group of Y 2 examples include alkyl groups which may have substituents of R 1 to R 15 and which satisfy the number of carbon atoms mentioned above.
• dialkylamino group each alkyl group may have the number of carbon atoms described above.
• the monoalkylamino group optionally having substituent(s) for Y 2 includes methylamino group, ethylamino group, propylamino group, isopropylamino group, butylamino group, isobutylamino group, t-butylamino group, pentyl Examples include an amino group and a hexylamino group.
• Examples of the optionally substituted dialkylamino group for Y 2 include a dimethylamino group, a diethylamino group, a dipropylamino group, a diisopropylamino group, a dibutylamino group, a diisobutylamino group, a dipentylamino group, a dihexylamino group, An ethylmethylamino group is mentioned.
• the alkyl group of the monoalkylamino group and dialkylamino group of Y 2 may be substituted with a substituent. Examples of the substituent include those similar to those of the alkyl groups of R 1 to R 15 .
• the divalent aliphatic groups of X3 and X4 may be linear or branched.
• the number of carbon atoms in the divalent aliphatic group is preferably 1-20, more preferably 1-16, still more preferably 1-12, and particularly preferably 1-8.
• the divalent aliphatic group includes an alkylene group, an alkenylene group, and an alkynylene group, with an alkylene group being preferred.
• Alkylene groups include methylene, ethylene, propylene, butylene, methylpropylene, dimethylpropylene, pentamethylene, hexamethylene, heptamethylene, octamethylene, nonamethylene, decamethylene, and undecamethylene. group, dodecamethylene group, and the like.
• Substituents for the divalent aliphatic group of X 3 and X 4 include those similar to those of the divalent aliphatic group of X 1 .
• the divalent aliphatic groups of X3 and X4 may contain an oxygen atom and/or a nitrogen atom.
• X 3 and X 4 may be the same or different.
• n and n each independently represent an integer of 1 or more, preferably an integer of 1 to 8, more preferably an integer of 1 to 6, more preferably an integer of 1 to 5 , 1 to 3 are particularly preferred. m and n may be the same or different.
• R 40 , R 41 , R 42 and Y 2 may together form a ring.
• R 40 , R 41 or R 42 and Y 2 may together form a ring.
• R 40 and Y 2 , and R 41 and R 42 together form a ring, and the compound may have two rings.
• the nitrogen atom of the amino group of Y 2 and R 40 may together form a ring.
• the ring may contain oxygen atoms and/or nitrogen atoms.
• the compound represented by general formula (6) may be a compound having a bicyclo ring.
• Y 2 and R 40 together form a ring, and R 41 or R 42 and Y 2 together It may be a compound having a bicyclo ring having a ring formed by combining.
• R 40 , R 41 and R 42 are linear or branched alkyl groups having 1 to 6 carbon atoms and optionally having substituents.
• At least one of the first agent and the second agent contains a ligand compound, and the ligand compound is a compound represented by general formula (1), and a compound represented by general formula (5).
• At least one of the first agent and the second agent contains a ligand compound
• the ligand compound is a compound represented by general formula (6).
• R 40 , R 41 and R 42 are linear or branched alkyl groups having 1 to 6 carbon atoms and optionally having a substituent wherein the divalent aliphatic group of X3 and X4 represents an alkylene group that does not contain an oxygen atom and a nitrogen atom, m and n each independently represents an integer of 1 or more, Y2 is substituted a monoalkylamino group or dialkylamino group optionally having a group, wherein R 40 , R 41 or R 42 and Y 2 together form a ring; and sexual compositions.
• At least one of the first agent and the second agent contains a ligand compound
• the ligand compound is a compound represented by general formula (6). and in the above general formula, m is 1 and n is 2, and the compound as a whole contains four nitrogen atoms.
• the polydentate ligand (7) containing a nitrogen-containing heterocycle includes a heterocycle containing a 5- or 6-membered ring containing a nitrogen atom, has two or more nitrogen atoms in the molecule, and is bidentate or more represents a ligand compound of
• the number of nitrogen atoms in the molecule of the polydentate ligand (7) is 2 or more, and may be 3 or more.
• the number of heterocycles contained in the polydentate ligand (7) may be one, or two or more.
• nitrogen-containing heterocyclic ring examples include nitrogen-containing five-membered rings such as pyrrole ring, pyrazole ring and imidazole ring; nitrogen-containing six-membered rings such as pyridine ring, pyrazine ring, pyridazine ring, piperazine ring, pyrimidine ring and triazine ring; mentioned.
• the nitrogen-containing heterocyclic ring may be a condensed ring of a 5- or 6-membered ring containing a nitrogen atom and another ring (e.g., an aromatic ring).
• the condensed ring of a 5- or 6-membered ring containing a nitrogen atom and an aromatic ring examples include a quinoline ring, an isoquinoline ring, an indole ring, a benzimidazole ring, and a benzotriazole ring.
• the polydentate ligand (7) may contain a heterocyclic ring containing a 5- or 6-membered ring containing a nitrogen atom, for example, a condensed ring such as an indole ring, a benzimidazole ring, a benzotriazole ring, and a heterocyclic ring containing a 5- or 6-membered ring containing a nitrogen atom.
• a condensed ring such as an indole ring, a benzimidazole ring, a benzotriazole ring, and a heterocyclic ring containing a 5- or 6-membered ring containing a nitrogen atom.
• the polydentate nature of the polydentate ligand (7) may be bidentate or more, and may be tridentate, tetradentate, or the like.
• polydentate amine compound of the general formula (5) examples include N,N,N',N'-tetramethylethylenediamine (hereinafter sometimes abbreviated as "TMEDA”), N,N,N',N' -tetramethylpropylenediamine (hereinafter sometimes abbreviated as "TMPDA”), N,N,N',N'-tetramethyl-1,4-diaminobutane, N,N,N',N'-tetraethyl
• TMEDA N,N,N',N'-tetramethylethylenediamine
• TMPDA N,N,N',N'-tetramethyl-1,4-diaminobutane
• TEEDA ethylenediamine
• N,N,N',N'-tetrakis(2-hydroxyethyl)ethylenediamine and the like examples include ethylenediamine (hereinafter sometimes abbreviated as "TEEDA”), N,N
• Examples of the compound represented by the general formula (6) include compounds having a cyclo ring such as 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane; 4,11-dimethyl -Compounds having a bicyclo ring such as 1,4,8,11-tetraazabicyclohexadecane; 2,5,9,12-tetramethyl-2,5,9,12-tetraazatetradecane, 2,6,9, 13-tetramethyl-2,6,9,13-tetraazatetradecane, 2,5,8,12-tetramethyl-2,5,8,12-tetraazatetradecane, N,N,N,N',N '',N'-pentamethyldiethylenetriamine (hereinafter sometimes abbreviated as "PMDETA”), hexamethyltris(2-aminoethyl)amine, N,N-bis(2-dimethylaminoethyl)-N, having a
• Examples of the polydentate ligand (7) containing a nitrogen-containing heterocycle include 2,2-bipyridine, 4,4'-di-(5-nonyl)-2,2'-bipyridine, N-(n-propyl ) pyridylmethanimine, N-(n-octyl)pyridylmethanimine, N-propyl-N,N-di(2-pyridylmethyl)amine, N′,N′′-dimethyl-N′,N′′-bis ((pyridin-2-yl)methyl)ethane-1,2-diamine, 2,6-bis(1-pyrazole)-pyridine (hereinafter sometimes abbreviated as "DPP"), 2-(2-pyridyl ) benzimidazole, tris[(2-pyridyl)methyl]amine, 3,6-di(2-pyridyl)-1,2,4,5-tetrazine, N,N,N',N'-te
• tri(o-tolyl)phosphine, tris(2,6-dimethoxyphenyl)phosphine, triphenylphosphite, TMEDA, TMPDA, TEEDA, PMDETA and Me 6 TREN are preferably used.
• the ligand compounds may be blended singly or in combination of two or more.
• the ligand compound is used to enhance the catalytic activity of the transition metal compound in the packaged dental curable composition of the present invention.
• the content of the ligand compound is determined from the viewpoint of curability, mechanical strength of the cured product, and adhesion to tooth substance and CAD/CAM resin, particularly adhesion durability.
• the range is preferably 0.005 to 10 parts by mass, more preferably 0.01 to 5 parts by mass, and 0.05 to 3 parts by mass relative to 100 parts by mass of the total amount of polymerizable monomer components in the composition. A range of parts is more preferred.
• the packaged dental curable composition of the present invention contains a redox polymerization initiator.
• a redox polymerization initiator in order for the packaged dental curable composition of the present invention to be a dual-cure composition that can be polymerized even by irradiation with light, as a component other than the polymerization initiator system described above, At least one of the first agent and the second agent may further contain a conventionally known photopolymerization initiator.
• photopolymerization initiators examples include ⁇ -diketones, ketals, thioxanthones, (bis)acylphosphine oxides, and ⁇ -aminoacetophenones.
• ⁇ -diketones examples include dl-camphorquinone (commonly known as "CQ"), benzyl, and 2,3-pentanedione.
• Ketals include, for example, benzyl dimethyl ketal and benzyl diethyl ketal.
• Thioxanthones include, for example, 2-chlorothioxanthone and 2,4-diethylthioxanthone.
• acylphosphine oxides include, for example, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, 2,6-dimethoxybenzoyldiphenylphosphine oxide, and 2,6-dichlorobenzoyldiphenylphosphine.
• bisacylphosphine oxides include bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, bis(2,6-dichlorobenzoyl)-2,5-dimethylphenylphosphine oxide, bis(2,6- dichlorobenzoyl)-4-propylphenylphosphine oxide, bis(2,6-dichlorobenzoyl)-1-naphthylphosphine oxide, bis(2,6-dimethoxybenzoyl)phenylphosphine oxide, bis(2,6-dimethoxybenzoyl)- 2,4,4-trimethylpentylphosphine oxide, bis(2,6-dimethoxybenzoyl)-2,5-dimethylphenylphosphine oxide, dibenzoylphenylphosphine oxide, tris(2,4-dimethylbenzoyl)phosphine oxide, tris( 2-methoxybenzoyl)phosphine oxide
• ⁇ -Aminoacetophenones include, for example, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-1-butanone, 2-benzyl-2-diethylamino-1-(4-morpholinophenyl)-1 -butanone, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-1-propanone, 2-benzyl-2-diethylamino-1-(4-morpholinophenyl)-1-propanone, 2-benzyl- 2-dimethylamino-1-(4-morpholinophenyl)-1-pentanone, 2-benzyl-2-diethylamino-1-(4-morpholinophenyl)-1-pentanone.
• the photopolymerization initiator may be used singly or in combination of two or more.
• the content of the photopolymerization initiator is not particularly limited, but from the viewpoint of the curability of the obtained dental curable composition, etc. It is preferably 0.005 to 5 parts by mass, even more preferably 0.01 to 3 parts by mass.
• a photopolymerization initiator and a polymerization accelerator for the photopolymerization initiator may be used in combination.
• the organic peroxide (D) may be used in combination with a polymerization accelerator.
• Polymerization accelerators used together with the organic peroxide (D) and/or the photopolymerization initiator include tertiary amines, aldehydes, thiol compounds, triazine compounds substituted with a trihalomethyl group, thiourea compounds, and sulphine.
• Acids benzotriazole compounds, benzimidazole compounds, sulfites, hydrogensulfites, borate compounds, barbituric acid and derivatives thereof, and the like.
• One of the polymerization accelerators may be used alone, or two or more thereof may be used in combination.
• tertiary amines include N,N-dimethylaniline, N,N-dimethyl-p-toluidine, N,N-dimethyl-m-toluidine, N,N-diethyl-p-toluidine, N,N -dimethyl-3,5-dimethylaniline, N,N-dimethyl-3,4-dimethylaniline, N,N-dimethyl-4-ethylaniline, N,N-dimethyl-4-isopropylaniline, N,N-dimethyl -4-t-butylaniline, N,N-dimethyl-3,5-di-t-butylaniline, N,N-bis(2-hydroxyethyl)-3,5-dimethylaniline, N,N-bis( 2-hydroxyethyl)-p-toluidine, N,N-bis(2-hydroxyethyl)-3,4-dimethylaniline, N,N-bis(2-hydroxyethyl)-
• Aldehydes include, for example, terephthalaldehyde and benzaldehyde derivatives.
• Benzaldehyde derivatives include dimethylaminobenzaldehyde, p-methoxybenzaldehyde, p-ethoxybenzaldehyde, pn-octyloxybenzaldehyde and the like.
• Examples of thiol compounds include 3-mercaptopropyltrimethoxysilane, 2-mercaptobenzoxazole, 2-mercaptobenzimidazole, decanethiol, and thiobenzoic acid.
• the triazine-based compound substituted with a trihalomethyl group known s-triazine compounds having at least one trihalomethyl group such as trichloromethyl group and tribromomethyl group can be used without any limitation.
• thiourea compounds include thiourea, methylthiourea, ethylthiourea, ethylenethiourea, N,N'-dimethylthiourea, N,N'-diethylthiourea, N,N'-di-n-propylthiourea, N, N'-dicyclohexylthiourea, trimethylthiourea, triethylthiourea, tri-n-propylthiourea, tricyclohexylthiourea, tetramethylthiourea, tetraethylthiourea, tetra-n-propylthiourea, tetracyclohexylthiourea, 1-( 2-pyridyl)-2-thiourea, 4,4-dimethylethylenethiourea and the like.
• One of the thiourea compounds may be used alone, or two or more may be used in combination.
• sulfinic acids examples include p-toluenesulfinic acid, sodium p-toluenesulfinate, potassium p-toluenesulfinate, lithium p-toluenesulfinate, calcium p-toluenesulfinate, benzenesulfinic acid and sodium benzenesulfinate.
• sodium benzenesulfinate, sodium p-toluenesulfinate, 2,4,6-triisopropylbenzenesulfinic acid, and sodium 2,4,6-triisopropylbenzenesulfinate are preferred.
• One of the sulfinic acids may be used alone, or two or more of them may be used in combination.
• Benzotriazole compounds include, for example, 1H-benzotriazole (hereinafter sometimes abbreviated as “BTA”), 5-methyl-1H-benzotriazole, 5,6-dimethyl-1H-benzotriazole and the like.
• BTA 1H-benzotriazole
• Benzimidazole compounds include, for example, benzimidazole, 5-methylbenzimidazole, 5,6-dimethylbenzimidazole and the like.
• Sulfites include, for example, sodium sulfite, potassium sulfite, calcium sulfite, ammonium sulfite and the like.
• Hydrogen sulfites include, for example, sodium hydrogen sulfite, potassium hydrogen sulfite, and the like.
• borate compounds include arylborate compounds having 1 to 4 aryl groups in one molecule (eg, tetraphenylboron, tetrakis(p-chlorophenyl)boron, etc.) and salts thereof.
• Barbituric acid and derivatives thereof include, for example, barbituric acid, 5-butylbarbituric acid, 1,3,5-trimethylbarbituric acid, 1-cyclohexyl-5-ethylbarbituric acid, 1-benzyl-5- Phenyl barbituric acid, salts thereof, and the like.
• the polymerization accelerator for the photopolymerization initiator may be used singly or in combination of two or more.
• the content of the polymerization accelerator for the photopolymerization initiator is not particularly limited. It is preferably 0.001 to 10 parts by mass, more preferably 0.005 to 5 parts by mass, and 0.01 to 3 parts by mass with respect to 100 parts by mass of the total amount of the monomer components. is more preferred.
• At least one of the first agent and the second agent may further contain a fluoride ion-releasing substance.
• a fluoride ion-releasing substance By blending a fluoride ion-releasing substance, a dental resin cement that can impart acid resistance to tooth substance can be obtained.
• fluoride ion releasing substances include fluoride ion releasing polymers such as copolymers of methyl methacrylate and methacrylic acid fluoride; cetylamine hydrofluoride, cyclohexylamine hydrofluoride, diisobutylamine fluoride; Hydrates, hydrofluorides of aliphatic or cycloaliphatic primary, secondary or tertiary amines such as triethylamine trihydrofluoride; sodium fluoride, potassium fluoride, sodium monofluorophosphate, metal fluorides such as lithium fluoride and ytterbium fluoride; The fluoride ion-releasing substances may be used singly or in combination of two or more.
• At least one of the first agent and the second agent may contain a pH adjuster.
• the pH adjuster is used for the purpose of adjusting and stabilizing the pH of the packaged dental curable composition of the present invention.
• the pH adjuster is not particularly limited as long as the effects of the present invention are achieved, but acids such as lactic acid, succinic acid, gluconic acid, citric acid, phosphoric acid and carbonic acid, and salts thereof are preferably used.
• the pH adjusters may be used singly or in combination of two or more.
• Phosphates include alkali metal phosphates such as trisodium phosphate and tripotassium phosphate; alkali metal hydrogen phosphates such as disodium hydrogen phosphate and dipotassium hydrogen phosphate; sodium dihydrogen phosphate, phosphorus dihydrogen phosphate alkali metal salts such as potassium dihydrogen phosphate; alkyl phosphate alkali metal salts such as sodium dodecyl phosphate; sodium glycerophosphate, disodium glycerophosphate; alkaline earth phosphates such as tricalcium phosphate and trimagnesium phosphate metal salts; alkaline earth metal hydrogen phosphates such as calcium hydrogen phosphate and magnesium hydrogen phosphate; and alkaline earth metal dihydrogen phosphates such as calcium dihydrogen phosphate.
• disodium hydrogen phosphate, sodium dodecyl phosphate, sodium glycerophosphate, and disodium glycerophosphate are examples
• the packaged dental curable composition of the present invention may contain a polymerization inhibitor, an ultraviolet absorber, a thickener, a solvent (e.g., water, an organic solvent), Additives such as colorants, antibacterial agents, and fragrances may be added to at least one of the first agent and the second agent. These may be blended individually by 1 type, respectively, and may use 2 or more types together.
• polymerization inhibitors examples include hydroquinone, hydroquinone monomethyl ether, dibutylhydroquinone, dibutylhydroquinone monomethyl ether, t-butylcatechol, 2-t-butyl-4,6-dimethylphenol, 2,6-di-t-butylphenol, 2,6-di-t-butyl-4-methylphenol and the like.
• the content of the solvent (e.g., water, organic solvent) in the packaged curable dental composition is less than 1% by mass of the total amount of the packaged dental curable composition. is preferred, more preferably less than 0.1% by mass, and even more preferably less than 0.01% by mass.
• the packaged dental curable composition of the present invention may be prepared according to a conventional method according to the types and amounts of the components.
• the sachet-type curable dental composition of the present invention is used in the form of a two-pack.
• the two-component form can be appropriately selected from a powder and liquid form, a paste and liquid form, a two-paste form, and the like. used in the form It is preferable to store each paste in a state in which the pastes are isolated from each other, knead the two pastes immediately before use, and allow chemical polymerization to proceed and harden.
• the paste is usually prepared by kneading a powdery filler (G) with a liquid component prepared by mixing ingredients other than the filler (G).
• the sachet-type curable dental composition of the present invention is used for bonding dental prostheses such as crowns, inlays, and bridges to dentin, and for constructing abutments, etc. for damaged teeth.
• the packaged dental curable composition of the present invention can be used as a dental cement such as a dental resin cement.
• dental resin cements it is particularly suitable for use as a self-adhesive dental resin cement.
• the present invention includes embodiments in which the above configurations are combined in various ways within the scope of the technical idea of the present invention as long as the effects of the present invention are exhibited.
• HEMA 2-hydroxyethyl methacrylate
• Bis-GMA 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]propane
• D-2.6E 2,2-bis(4-methacryloyloxypoly Ethoxyphenyl)propane (average number of added moles of ethoxy groups: 2.6)
• TEGDMA triethylene glycol dimethacrylate
• R972 Fine particle silica manufactured by Nippon Aerosil Co., Ltd., trade name "Aerosil (registered trademark) R972", average particle size: 16 nm
• Alumina Aluminum oxide manufactured by Nippon Aerosil Co., Ltd., trade name "AEROXIDE (registered trademark) Alu C", average particle size: 13 nm
• TPBSS sodium 2,4,6-triisopropylbenzenesulfinate
• DEPT N,N-bis(2-hydroxyethyl)-p-toluidine
• BTA 1H-benzotriazole
• DMETU 4,4-dimethylethylenethiourea
• Examples 1 to 9 and Comparative Examples 1 to 4 Among the components listed in Tables 1 and 2, components other than the filler and the ascorbic acid compound are mixed at room temperature to form a uniform liquid component, and then the obtained liquid component, the ascorbic acid compound and the filler are kneaded. Thus, divided-package type curable dental compositions of Examples 1 to 9 and Comparative Examples 1 to 4 were prepared. Next, using these packaged dental curable compositions, the degree of polymerization at 32° C. and the adhesive strength to CAD/CAM resins were measured immediately after production according to the methods described below. Tables 1 and 2 show the compounding ratio (parts by weight) and test results of this dental curable composition.
• ATR measurement device diamond micro ATR device, single-reflection horizontal ATR SmartOrbit (registered trademark), manufactured by ThermoFisher Scientific
• FT-IR measuring device Frier transform infrared spectrometer “Nicolet 6700” manufactured by ThermoFisher Scientific
• the curable dental composition obtained by mixing the first agent and the second agent in each example and comparative example was placed on the sample stage of a diamond micro ATR machine set at 32°C.
• a real-time IR measurement was performed to measure the spectrum of the dental curable composition at each time.
• the real-time IR measurement was started from the time when the curable dental composition immediately after mixing was placed.
• the polymerization rate at 32° C. is preferably 45% or more, and preferably 47.5% or more, from the viewpoint of adhesion to CAD/CAM resins having few unreacted polymerizable groups on the resin surface, particularly adhesion durability. It is more preferably 50% or more, more preferably 50% or more.
• the dental curable composition obtained by mixing the first agent and the second agent was applied to one end surface (circular cross-section ). Then, the end surface of the side on which the dental hardenable composition was built up was made a smooth surface (adherend treatment surface) in the round hole so that the center of the round hole and the center of the stainless steel cylindrical rod were substantially aligned. ), and a cylindrical rod made of stainless steel was pressed vertically against the smooth surface to bond it, thereby preparing a test sample. Ten test samples were produced. After removing the excess curable dental composition protruding from the circumference of the cylindrical stainless steel rod when pressed, the test sample was allowed to stand at room temperature for 30 minutes and immersed in distilled water.
• the test sample immersed in distilled water was allowed to stand in a thermostatic chamber maintained at 37°C for 24 hours. Further, after standing for 10 days in a constant temperature chamber maintained at 70° C., the tensile bond strength was examined and evaluated as bond durability.
• the tensile bond strength was measured using a universal testing machine (manufactured by Shimadzu Corporation) with a crosshead speed of 2 mm/min.
• the tensile bond strength in the table is the average value of the measured values for 10 test samples.
• the packaged dental curable composition of the present invention (Examples 1 to 9) had a polymerization rate of 48 to 54% and a tensile adhesive strength to CAD/CAM resin. is 12.9 MPa or more, which is excellent.
• the packaged dental curable composition of the present invention can be suitably used for bonding dental prostheses such as crowns, inlays and bridges to dentin, building abutments, and the like in dental treatment.

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• 2022
  • 2022-10-07 US US18/698,869 patent/US20250000747A1/en active Pending
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