WO2006085682A1 - 歯科用修復材組成物 - Google Patents
歯科用修復材組成物 Download PDFInfo
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- WO2006085682A1 WO2006085682A1 PCT/JP2006/302679 JP2006302679W WO2006085682A1 WO 2006085682 A1 WO2006085682 A1 WO 2006085682A1 JP 2006302679 W JP2006302679 W JP 2006302679W WO 2006085682 A1 WO2006085682 A1 WO 2006085682A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/12—Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
- C08L101/14—Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity the macromolecular compounds being water soluble or water swellable, e.g. aqueous gels
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/20—Protective coatings for natural or artificial teeth, e.g. sealings, dye coatings or varnish
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- 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
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- 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
- C08F20/10—Esters
- C08F20/26—Esters containing oxygen in addition to the carboxy oxygen
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or 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 of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
Definitions
- the present invention relates to a dental restorative composition. More specifically, resin-based prosthetic materials such as dental crown resins, human teeth and resin inlays, resin-based filler materials such as composite resins, and further, dental resins such as finish sealants, tooth surface coating materials, cavity coating materials and the like
- resin-based prosthetic materials such as dental crown resins, human teeth and resin inlays
- resin-based filler materials such as composite resins
- dental resins such as finish sealants, tooth surface coating materials, cavity coating materials and the like
- the present invention relates to a novel dental restorative material composition having excellent mechanical properties, particularly toughness, which can be suitably used for the entire base material, and a dental restorative material composition containing a powder of a cured product thereof.
- dental restorations for dental defects include resin-based prosthetic materials such as dental crown resin, resin inlays, resin onlays, artificial teeth, dental materials, and resin-based filling materials such as composite resins.
- Resin-based dental materials are often used in place of inorganic and metallic dental materials, such as resin-based coatings for protection after cavity formation for sealing.
- a paste in which a polymerizable monomer, an inorganic filler powder, a polymerization initiator and the like are mixed with a resin-based material widely used in the field of prosthodontics and storage. The properties of the cured paste are often determined by the filling rate of the filler powder and the average particle size.
- a paste containing glass powder with an average particle size of about 100 m as a filler is excellent in mechanical strength but too large in particle size, so it has poor abrasiveness and a glossy surface.
- the resin part on the surface of the cured product is selectively worn away, and the glass powder protrudes to form a file, which causes wear on the mating of human teeth and dental materials, etc. And other problems have been pointed out.
- the method of using a spherical inorganic filler having a particle diameter in the range of 0.1 to 1 zm and a uniform particle size distribution is proposed in 6 4 4 7 7. Since this inorganic filler is a true sphere and the particle size is uniform, it can be highly blended with the polymerizable monomer, and has advantages such as excellent mechanical strength and surface gloss.
- the anchoring effect on the resin is inferior to that of the amorphous inorganic filler powder, and the spherical inorganic filler tends to fall out of the resin. It is pointed out.
- a filler (hereinafter referred to as a composite filler) obtained by coating an inorganic filler powder having a size of 0.1 / m or less with a polymerizable monomer and polymerizing it is referred to as Attempts have been made to solve the above problems by the method used.
- the composite filler produced by this method uses a polyfunctional (meth) acrylate compound having three or more ethylenically unsaturated groups in the (meth) acrylate-based polymerizable monomer. Some of the ethylenically unsaturated groups remain without polymerizing.
- the ethylenically unsaturated group remaining on the surface of the composite filler and the polymerizable monomer constituting the matrix are covalently bonded, so that the mechanical strength of the cured product is obtained.
- the composite filler is excellent in abrasion resistance because there is no falling off of the composite filler, but since the composite filler itself is very hard and brittle, the cured body is easily damaged and the impact resistance is improved. The inferior fault is pointed out. Therefore, in order to improve this brittleness, in JP-A-60-171, an alkyl-based polymerizable acrylic monomer having 3 or more ethylene-based unsaturated groups in its molecule is disclosed.
- a composite filler powder is disclosed which has been polymerised and milled after kneading.
- the composite filler powder described in this patent has improved brittleness over the composite filler powder described in JP-A-56-206, but the effect is not yet satisfactory. It is enough.
- a dental composition composed of a polymerizable monomer having a urethane bond (refer to Japanese Patent Application Publication Nos. 5-7 5 5 5 5 5 5 and 5- 5 6 2 6 5 5), A dental composition and a composite filler, each of which comprises a reversibly unsaturated lvamoyl isocyanurate monomer, and a dental composition containing the composite filler (Japanese Patent Application Laid-open No. 7-8 7)
- Japanese Patent Application Laid-open No. 7-87 Japanese Patent Application Laid-open No.
- a dental composition comprising dipentene erythritol (meth) acrylate monomer (JP-A-57-35505 and JP-A-63-183940) (See Reference), because the hardened body is hard and brittle, when used as a dental restorative material, it can not be said that mechanical properties such as fracture resistance are sufficient.
- the polymerizable compound having three or more ester chains having a polymerizable group bonded in one molecule described in the present invention is partially described in JP-A-6-1679, and is a fatty acid.
- JP-A-6-1679 is a fatty acid.
- the structure of the polyester chain and the average degree of polymerization of the polymer it is described to provide a material that controls the heat transition temperature and enables ON-OFF control in drug release in any temperature range.
- this polymerizable compound to the dental restorative composition of the present invention is not described at all. Therefore, resin-based restorative materials with high mechanical properties, in particular toughness, and good impact resistance and damage resistance, are still desired. Disclosure of the invention
- the present invention includes resin-based materials such as dental crown resin, artificial teeth, resin-based prosthetic materials such as resin-in-lays, resin-based filler materials such as composite resins, and further resin-based materials such as mesh chassis and cavity coatings.
- resin-based materials such as dental crown resin, artificial teeth, resin-based prosthetic materials such as resin-in-lays, resin-based filler materials such as composite resins, and further resin-based materials such as mesh chassis and cavity coatings.
- resin-based materials such as dental crown resin, artificial teeth, resin-based prosthetic materials such as resin-in-lays, resin-based filler materials such as composite resins, and further resin-based materials such as mesh chassis and cavity coatings.
- resin-based materials such as dental crown resin, artificial teeth, resin-based prosthetic materials such as resin-in-lays, resin-based filler materials such as composite resins, and further resin-based materials such as mesh chassis and cavity coatings.
- a dental restorative composition which can be suitably used generally and which has high mechanical properties, particularly high toughness,
- the above objects and advantages of the present invention are a multifunctional having at least three partial chains each having a polymerizable group and an ester bond and having a chain length of at least 7 atoms in one molecule. This is achieved by a dental restoration material composition characterized by containing a polymerizable compound.
- the multifunctional polymerizable compound (hereinafter sometimes referred to as multifunctional polymerizable compound (A)) used in the present invention will be described first.
- the polyfunctional polymerizable compound has, in one molecule, at least three partial chains each having a polymerizable group and an ester bond and having a chain length of 7 atoms or more.
- a radical polymerizable group such as an ethylene unsaturated bond is preferable.
- At least three partial chains are present independently of one another, and the chain length of the partial chain is 7 atoms or more, preferably 9 atoms or more, more preferably 11 atoms or more.
- the upper limit value is not particularly limited, but if it is too long, the mechanical strength is lowered, so it is preferably at most 100 atoms, more preferably at most 50 atoms, further preferably at most 30 atoms .
- the chain length of a partial chain is the number of atoms on the main chain of the partial chain.
- the number of etheric oxygen atoms is not counted in the number of atoms on the main chain.
- the ring structure in the chain adopts the longer partial ring structure.
- the main chain is selected so that the polymerizable group and the ester bond are located on the main chain.
- the oxygen atom (-0-) of the ester (R-CO-0-R, R is an alkyl group, and so on) has low polarizability and low hydrophilicity, but it is preferable to use ether (R-0 1 R)
- Oxygen atoms (101) are highly polarizable and hydrophilic, and Absent. Therefore, on one partial chain, on average, etheric oxygen atoms are preferably 5 atoms or less, more preferably 3 atoms or less, still more preferably 1 atom or less. Further, the atomic ratio of etheric oxygen atoms to other atoms is preferably 0.3 or less, more preferably 0.2 or less, and still more preferably 0.5 or less. .
- the partial chain will be specifically described by taking the following polyfunctional polymerizable compound as an example.
- V is a divalent atomic group in which an atom constituting the main chain is one atom
- W is a trivalent atomic group in which an atom constituting the main chain is one atom.
- V—V—COO—CH CH 2 does not correspond to the partial chain referred to in the present invention because the chain length of one having a polymerizable group and an ester bond is 6 atoms.
- the polymerizable functional group is preferably located closer to the molecular end of the molecule than to the main chain side of the molecule, since crosslinking can be achieved efficiently with high efficiency.
- the atomic group which may be present on a chain other than the ester bond (--CO.sub .-- O.sub.1) in the partial chain as described above, a highly hydrophilic atomic group such as an etheric oxygen bridge, or other human body
- the compound is not particularly limited as long as it does not have the property of hindering the effects of the invention such as toxicity, and hydrocarbon groups, sulfonic acid residues, phosphoric acid residues and the like can be mentioned. Of these, hydrocarbon groups are preferred.
- the partial chain preferably has a polyester structure.
- polyester chains include various polyester chains such as aliphatic polyester chains, aromatic ring-containing polyester groups, heterocyclic ring-containing polyester groups, carbonate group-containing polyester groups, and alkylene glycol-containing polyester groups.
- One or more polymerizable groups may be bonded to one end of the polyester chain and one or more side chains of the polyester chain, and it is preferable to be bonded to the end.
- different polyester chains such as aliphatic polyester chains and aromatic ring-containing polyester chains may be simultaneously bonded.
- the polymerizable group is preferably a radically polymerizable group having an ethylenically unsaturated bond such as a vinyl group or a vinylidene group, and more preferably a (meth) acryloyl group.
- a residual hydroxyl group and a compound having a polymerizable group, and a carboxylic acid or its acid halide may be used as a tin compound
- polyhydric alcohol compounds examples include glycerin, 1,1,1-tri (hydroxymethyl) ethane, 1,1,1 tri (hydroxymethyl) propane,
- cyclic ester compounds include glycolide, D, L-lactide, L-lactide, D-lactide, i3-butyrolactone, abutyrolactone,] 3-valerolactone, avalerolactone, (5-valerolactone, ⁇ - Examples thereof include force prolactone, glutinous prolactone, ⁇ -force prolactone and the like.
- the multifunctional compound preferably has a partial chain structure (formula (I) below) which is a polyester chain to which a polymerizable group is bonded.
- Z is one OCO—or one COO—
- R 1 is an alkylene group having 1 to 10 carbon atoms, a divalent group containing an aromatic ring and / or a heterocyclic ring, and preferably a linear or branched alkylene group having 1 to 5 carbon atoms, It is a divalent group containing an aromatic ring and / or a heterocycle, more preferably a linear alkylene group having 1 to 3 carbon atoms.
- X represents a hydrogen atom, a halogen atom, a cyano group, a linear or branched alkyl group having 1 to 10 carbon atoms, It is a monovalent group containing an aromatic ring and Z or a heterocyclic ring, preferably a hydrogen atom or a linear or branched alkyl group having 1 to 5 carbon atoms, more preferably a hydrogen atom or a methyl group It is.
- n is a number of 1 to 10, preferably a number of 1 to 8, and more preferably a number of 1 to 6.
- R a and R b each independently represent a hydrogen atom, a linear or branched alkyl group having 1 to 10 carbon atoms, a monovalent group containing an aromatic ring and / or a heterocyclic ring, and preferably Each independently represents a hydrogen atom, a linear or branched alkyl group having 1 to 5 carbon atoms, an aromatic ring and / or a monovalent group containing a heterocycle, and more preferably each of them is independently Hydrogen atoms, linear alkyl groups of 1 to 3 carbon atoms.
- Q is an integer of 0 to 10, preferably an integer of 1 to 10, more preferably an integer of 1 to 8, and the definitions of X and n are the same as in formula (I).
- the methylene group in the above formula (I a) may be substituted with an alkylene group other than a methylene group, such as a propylene group or a group having both a methylene group and a propylene group, as long as the mechanical properties of the present invention are not impaired. It may be a group, or may be a group substituted with an oxyalkylene group such as an oxymethylene group or an oxyethylene group, a polyoxyalkylene group, a polyalkyl carbonate group, or a group other than these.
- the polyfunctional compound is preferably at least one selected from the group consisting of compounds represented by the following formula (II) and the following formula (III).
- R 2 is a partial chain represented by the formula (I) and R 3 is a hydrogen atom
- a linear or branched alkyl group having 1 to 10 carbon atoms, a group containing an aromatic ring and / or a complex ring, and a group having a polymerizable group, preferably a hydrogen atom or 1 to 5 carbon atoms.
- It is a linear or branched alkyl group or a group having a polymerizable group, and more preferably a hydrogen atom, a linear alkyl group having 1 to 3 carbon atoms, or a group having a polymerizable group.
- P is an integer of 0 to 10, preferably an integer of 1 to 10, more preferably an integer of 1 to 8, and m is 0 or 1. Note that 4 1 m groups: May be the same or different.
- the multifunctional polymerizable compound represented by the formula (II) can be homogenized with various polymerizable monomers, and can be adjusted to a composition according to the purpose.
- this polyfunctional polymerizable compound improves the mechanical properties, in particular the toughness, of the cured product of the dental restorative material composition, and thus prevents damage or chipping of resin-based prostheses, resin-based restorations, etc.
- a compound represented by the following formula (II I) can also be mentioned as a preferred example.
- R 4 , R 5 , R 6 , R 7 , R 8 and R 9 are each independently of the formula:
- a hydroxyl group a linear or branched alkyl group having 1 to 10 carbon atoms, a linear or branched hydroxyl alkyl group having 1 to 10 carbon atoms, an aromatic ring and / or a heterocyclic ring.
- R 2 and p are the same as in the above formula (II).
- the group represented by is preferably a polyester group to which a polymerizable group is bonded, more preferably a group represented by the above-mentioned formula (I), still more preferably a group represented by the above-mentioned formula (I a) Groups represented by) are particularly preferred.
- the mechanical properties, particularly the toughness, of the cured product of the dental restorative material composition are improved, and therefore resin-based prostheses, resin-based restorations, etc. Ideal for preventing breakage and chipping.
- R 4 to R 9 in the above-mentioned formula (III) are more preferable than the groups having no reactive group. Groups represented by each of (I a) or (IV) are more preferred.
- composition of the present invention can contain other polymerizable compounds together with the above-mentioned polyfunctional polymerizable compound.
- polymerizable compounds known polymerizable compounds can be used.
- Examples of known polymerizable compounds include (i) monofunctional polymerizable monomers, (ii) bifunctional polymerizable monomers, (iii) trifunctional polymerizable monomers, and (i V) tetrafunctional or higher Examples thereof include polymerizable monomers, and (meth) acrylic acid ester compounds are particularly preferable. Specific examples are given below.
- Monofunctional polymerizable monomers include, for example, methyl (meth) acrylate, technical grade (meth) acrylate, n-butyl (meth) acrylate, isopropyl (meth) acrylate, 2-ethylhexyl (meth) acrylate N-lauryl (meth) acrylate, n-stearyl (meth) acrylate, behenyl (meth) 'acrylate, 2-hydroxyl (meth) acrylate, 2-hydrogen Droxy 3- phenoxypropyl (meth) acrylate, tetrafurfuryl (meth) acrylate, glycidyl (meth) acrylate, methoxy ethylene glycol (meth) acrylate, methoxy diethylene glycol (meth) acrylate, methoxy triethylene glycol (meth) acrylate , Methoxyethylene glycol (meth) acrylate, ethoxyethylene glycol (meth) acrylate, e
- (meth) Acrylic acid ester type polymerizable monomers (meth) Acrylic acid ester type polymerizable monomers.
- a polymerizable monomer in which one polyester chain and one polymerizable group are bonded, or a polymerizable monomer having one (meth) atalylate group and a polycarbonate group can be used.
- known acidic group-containing polymerizable monomers can be used.
- a phosphoric acid group-containing polymerizable monomer for example, a pyrophosphoric acid group-containing polymerizable monomer, a thiophosphoric acid group-containing polymerizable monomer, a carboxylic acid group-containing polymerizable monomer Examples thereof include sulfonic acid group-containing polymerizable monomers and the like.
- the phosphoric acid group-containing polymerizable monomer for example, 2- (meth) acrylic acid dihydric acid-zinc phosphate, 3- (meth) acrylic acid hydroxypropyl dihydrogen phosphate, 10 — (Meth) acryloyl Oxydecyl dihydrogen phosphate, .12- (meth) acrylic acid dodecyl dihydrogen phosphate, (meth) acrylic acid hydroxyl phenyl phosphate, (8- (meth) acrylic acid oxy) octylene Polymerizable monomers such as 3-phosphonopropinate can be mentioned.
- pyrophosphate group-containing polymerizable monomer for example, pyrophosphate di [2- (meth) acryloyloxytyl], pyrophosphate di [4-1 (meth) acryloyloxybutyl], pyrophosphate di [8- Examples thereof include polymerizable monomers such as (meth) acrylic acid oxy], and pyrophosphoric acid di [12- (meth) acrylic acid dodecyl].
- Examples of the thiophosphoric acid group-containing polymerizable monomer include, for example, 2 _ (meth) acryloyl oxe ethyl diiodogenic thiophosphate, 3- (meth) acryloyl oxy propyl dihydrogen thiophosphate, 10 0 (meth) acrylo Examples thereof include polymerizable monomers such as xydecyl dihydrogen thiophosphate and 12 (meth) acryloyloxy dodecyl dihydrogen phosphate.
- carboxylic acid group-containing polymerizable monomer for example, (meth) acrylic acid, 2- (meth) acrylic oxyoxy carbonyl phthalic acid, 4_ (meth) acrylic oxybutyloxy Carbonyl phthalic acid, 8- (meth) alkoxyoxy carbonyl phthalic acid, 10 0 (meth) acryloyl oxydecyl oxycarbonyl phthalic acid and their acid anhydrides, 6-(meth) acrylic acid Polymerizable monomers such as royamino hexyl carboxylic acid, 8 _ (meth) acryloyl amino octyl carboxylic acid, 1 1-(meth) acryloyloxy 1 1, 1-undene di-dicarboxylic acid be able to.
- Examples of the sulfonic acid group-containing polymerizable monomer include 2- (meth) acrylamidoethylsulfonic acid, 3- (meth) acrylamidopropylsulfonic acid, 4-mono (meth) acrylamidobutylsulfonic acid, 10- (meth) Polymerizable monomers such as acrylamido decyl sulfonic acid can be mentioned.
- methyl (meth) acrylates Preferred are ethyl (meth) acrylate, n-butyl (meth) acrylate, isopropyl (meth) acrylate, tetrafurfuryl (meth) acrylate, and isopolyl (meth) acrylate.
- Examples of the difunctional polymerizable monomer include, as an aromatic polymerizable compound, for example, 2-, 2-bis ((meth) acryloyloxyphenyl) propane, 2, 2-bis [4 Mono (3- (meth) acryloyloxy) mono- 2-hydroxy propoxyphenyl) propane, 2, 2- bis (4- (meth) acryloyloxypolyethoxyphenyl) propane, 2, 2- Bis (41- (meth) acryloyloxydiethoxyphenyl) propane, 2, 2-bis (4- (meth) acryloyloxy tetraethoxyphenyl) propane, 2, 2- bis (4- (meth) Acryloxy methoxyethoxy ethoxy) propane, 2, 2-bis (41 (meth) acryloyloxy dipropoxy phenyl) propane, 2- (4- (meth) acryloyl diethoxy Phenyl) 1 2 — (4-(Meth) acryloyloxydiethoxyphenyl) propane,
- a compound having two (meth) acrylate groups and a polyester group for example, Plaxcel 2000 series (Polyforce Pro Lactone Gel, manufactured by Daicel Chemical Industries, Ltd.) has two (meth) aclay base groups. Coupled polymerizable monomers can also be used. Furthermore, two (meth) acrylate groups and polycarbo A polymerizable monomer in which two (meth) acrylate groups are bound to a compound having a nitrate group, for example, Plaxcel CD (polycarbonate diol) is also available.
- Plaxcel CD polycarbonate diol
- an adduct obtained from the addition with a diisocyanate compound such as diisosiate methylcyclohexan, isophorone diisosiate, methylene bis (4-cyclohexyl succinate), or di (2- (meth) ) Acryloyloxypropyl) phosphite, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) atalylate, tetraethylene glycol di (meth) acrylate is preferred.
- a diisocyanate compound such as diisosiate methylcyclohexan, isophorone diisosiate, methylene bis (4-cyclohexyl succinate), or di (2- (meth) ) Acryloyloxypropyl) phosphite
- ethylene glycol di (meth) acrylate diethylene glycol di (meth) acrylate
- trifunctional polymerizable monomers include, for example, trimethylolpropane tri (meth) acrylate, trimethylol ester tri (meth) atalylate, pentaerythritol tri (meth) acrylate, dipentaery tri) relytri (meth) And acrylates, ethoxylated trimethylolpropane tri (meth) acrylates, propoxylated trimethylolpropane tri (meth) acrylates, tris (2- (meth) acrylic acid xicheyl) isocyanurate and the like. Moreover, it differs from the said polyfunctional polymerizable compound used as an essential component by this invention,
- a polymerization having three (meth) acrylate groups bonded to a compound having three (meth) atalylate groups and a polyester group such as Braxcel 300 series (poly strength prolactone diol, manufactured by Daicel Chemical Industries, Ltd.) Monomers can also be used.
- a polymerizable monomer having three acrylate groups and a polycarbonate group can also be used.
- trifunctional polymerizable monomers trimethylolpropane tri (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, trilith (2- (meth) acrylic isocyanurate
- the (meth) polymerizable monomer having 3 acrylate groups and a polyester group, and 3 (meth) acrylate groups, which are different from the above-mentioned polyfunctional polymerizable compound used as an essential component in the present invention, are preferable.
- Polymerizable monomers having a polycarbonate group can also be used.
- Examples of the polymerizable monomer (i V) tetrafunctional or higher include pentyl erythritol tetra (meth) acrylate, ethoxylated pentyl ester erythritol tetra (meth) acrylate, and propoxylated penterythritol erythritol tetra (meth) ) Acrylates, dibutyl erythritol mono (meth) acrylates, ethoxylated dipentanol erythritol tetra (meth) acrylates, propoxylated dipent erythritol erythritol (meth) acrylates, didimethyl methacrylate monopropane tetra Tetra (meth) acrylate compounds such as (meth) acrylate, ethoxylated ditrimethylol propane tetra (meth) acrylate, or hexamethyl diis
- Stilt hexa (meta) acrylate etc. may be mentioned.
- polyethylene-based unsaturated rubamoyl isocyanurate compounds described in Japanese Patent Publication No. 7-8063 can also be used.
- Polymerizable monomers having a group can also be used.
- the weight ratio of the former to the latter is 9 to 1: 1 to 9: 9, preferably 9 5 To 5: 5 to 95, more preferably 9 to 0: L 0: 10 to 90.
- the composition of the present invention preferably contains a polymerization initiator.
- a polymerization initiator hereinafter sometimes referred to as a polymerization initiator (B)
- a polymerization initiator (hereinafter sometimes referred to as a polymerization initiator (B)) will be described.
- known polymerization initiators such as a photopolymerization initiator (B 1), a thermal polymerization initiator (B 2) and a redox initiator (B 3) can be used.
- a photosensitizer alone or [a combination of (photosensitizer) and (photopolymerization accelerator)] can be used.
- Photosensitizers include, for example, benzene, di-diketone compounds such as camphorquinone, mononaphthyl, p, p'-dimethybenzylene, pentadiphenone, 1,4 phenanthrenequinone, naphthoquinone, dif
- One or two or more kinds of known compounds which are excited by ultraviolet light or visible light to initiate polymerization such as enyltrimethyl benzoylphosphide may be used in combination.
- an acylphosphinoxide such as camphorquinone, diphenyltrimethylpenzoylphosphinoxide, or a derivative thereof.
- Conductors are particularly preferably used.
- a photoinitiator (B1), it is preferable to use a photoinitiator together.
- a photoinitiator used here, p-toluene sulfinic acid or its Alkali metal salts; N, N-dimethylanilin, N, N-dechiralaniline, N, N-dibenzyladianrin, N, N-dimethyl-p-toluidine, p-N, N-dimethylaminobenzoic acid, p-N N, N-Detylaminobenzoic acid, P-N, N-Dimethylaminobenzoic acid cetyl, P_N, N-Detylaminobenzoic acid ethyl, P_N, N-Dimethylaminobenzoic acid methyl ester, p-N, N-Getylaminobenzoic acid Acid methyl, p-N, N-dimethylaminobenzaldehy
- Secondary metal such as alkali metal salts of N-phenyl dalysin and N-phenyl dalysin
- citric acid malic acid, 2-hydroxypropanoic acid
- 5-butyl aminobarbituric acid 1-benzyl-5-phenylbarbituric acid
- organic peroxides such as benzoyl peroxide and di-tert-butyl peroxide.
- a photopolymerization accelerator one or more selected from these may be used in combination, particularly, p-N, N-dimethylaminobenzoic acid ethyl, p-N, N-dimethylaminobenzoic acid- Polymerizable groups such as tertiary aromatic amine or N, N-dimethylaminoethyl methacrylate in which a nitrogen atom is directly bonded to an aromatic such as 2-n-butoxyethyl, N, N-dimethylaminoethyl methacrylate or the like
- secondary amines such as aliphatic tertiary amine having N-phenyldalysine, and alkali metal salts of N-phenyldalysine.
- the curing of the dental restorative composition of the present invention When it is intended to complete the reaction, a combination of a photosensitizer and a photopolymerization accelerator is preferred, and it is preferable to use camphorquinone, (a) p-N, N-dimethylaminobenzoate, p-N, N- An ester compound of a tertiary aromatic amine in which a nitrogen atom is directly bonded to an aromatic such as dimethylaminobenzoic acid 2-n-butoxyethyl or the like, or an aliphatic compound having a polymerizable group such as N, N-dimethylaminoethyl methacrylate.
- camphorquinone (a) p-N, N-dimethylaminobenzoate, p-N, N- An ester compound of a tertiary aromatic amine in which a nitrogen atom is directly bonded to an aromatic such as dimethylaminobenzoic acid 2-n-butoxy
- the compounding amount of the polymerization accelerator is not limited as long as the photocuring performance is promoted, but it is usually used in the range of 1 to 200 parts by weight with respect to 100 parts by weight of the
- thermal polymerization initiator (B 2) organic peroxides, diazo compounds and the like can be preferably used.
- a compound having a decomposition half life at 80 ° C. of 10 hours or less is preferable.
- organic peroxide examples include: acetyl peroxide, isobutyl peroxide, decanoyl peroxide, benzyl peroxide, dicarboxylic acid peroxide such as succinic acid peroxide; diisopropyl peroxide dicarbonate, di-2- Peroxydicarbonates such as hexyl dihydroxy dicarbonate, diaryl dihydroxy dicarbonate, etc .; ter t-butyl propoxy isobutyrate; Veroxyesters such as cumene peroxide neodecane and the like; peroxide peroxides such as acetylcyclohexylsulfonyl peroxide and the like.
- diazo compounds examples include, for example, 2,2'-azobisisosoptyronitrile, 4,4'-azobis (4-cyanovaleric acid) and 2,2,2-azobis (4-methoxy-l, 2, 4-dimethoxyvaleronitrol), 2,2'-azobis (2-cyclopropyl phenyl pionitrol) and the like can be mentioned.
- 2,2'-azobisisosoptyronitrile 4,4'-azobis (4-cyanovaleric acid) and 2,2,2-azobis (4-methoxy-l, 2, 4-dimethoxyvaleronitrol), 2,2'-azobis (2-cyclopropyl phenyl pionitrol) and the like
- benzyl peroxide and 2,2'-azobisisoptyronitrile are more preferable.
- a redox initiator that initiates polymerization at around normal temperature by combining an organic peroxide such as benzoyl peroxide with a reducing agent such as N, N-dimethyl_p mono-toluidine such as tertiary amine (B 3) are also available.
- the photopolymerization initiator (B 1), the thermal polymerization initiator (B 2) and the redox initiator (B 3) may be used in combination without any problem.
- composition ratio of the above-mentioned polyfunctional polymerizable compound (A) to the polymerization initiator (B) may be suitably determined in consideration of the mechanical properties of the cured dental repair material composition and the color tone before and after curing.
- (B) is preferably 0.0005 to 10 parts by weight, more preferably 0.01 to 5 parts by weight, and still more preferably 0.01 to 3 parts by weight based on 100 parts by weight of (A). .
- the composition of the present invention preferably contains a filler.
- the filler (C) will be described.
- an inorganic filler (C 1) or an organic filler (C 2) is used.
- composite fillers (D) in which organic and inorganic fillers are integrated can also be used without limitation.
- the composite filler (D) will be described in detail later.
- the shape of the inorganic filler (C 1) may be spherical or amorphous, and is appropriately selected together with the particle diameter.
- Well-known inorganic fillers can be used. For example, the periodic law I, II, III, IV, transition metals and their oxides, hydroxides, chlorides, sulfates, sulfites, carbonates, phosphates, silicates, and mixtures thereof, composites Salt etc. are mentioned.
- glass powder such as silicon dioxide, strontium glass, lanthanum glass, barium glass, quartz powder, barium sulfate powder, aluminum oxide powder, titanium oxide powder, barium salt powder, glass beads, glass fiber And barium fluoride powder, lead salt powder, glass powder containing turkey, colloidal silica, silica gel, zirconium oxide powder, tin oxide powder, and other ceramic powders.
- Inorganic filler The powder may be used as it is as a dental restorative composition, but the inorganic filler powder should be made hydrophobic to improve the loading of the inorganic filler and to produce a cured product with good mechanical performance. Is preferred.
- Dialkyl dichlorosilanes such as methoxysilane silyl isocyanate, vinyltrichlorosilane, dimethyldichlorosilane, dioctyldichlorosilane, silane coupling agents such as hexamethylene disilazane, or equivalent zirconium coupling agents, titanium It is possible to cite a coupling agent and the like.
- the surface treatment method includes (a) a surface treatment agent alone with a pole mill, V-plender, Henschel mixer, etc., and (b) an organic solvent containing an organic solvent such as an aqueous ethanol solution and water uniformly mixed. Diluted with aqueous solution, add to inorganic filler and mix, then heat treat at 50 ° C to 150 ° C for several minutes to several hours (dry method), (c) Ethanol, toluene, xylene etc Organic solvents, an organic solvent to which an appropriate amount of water or acidic water is added to promote hydrolysis, an inorganic filler to water to form a slurry, and the above-mentioned surface treatment agent is added to room temperature to reflux temperature Treatment is carried out for several minutes to several hours, and after the solvent is removed by a known method such as decantation or evaporation, heat treatment is carried out for several hours at 50 ° C to 150 ° C (wet method, slurry method) cl) Surface treatment to high
- a method in which a surface treatment agent is directly added to (e) a polymerizable monomer (A) and an inorganic filler is blended can also be used.
- a surface treatment agent is directly added to (e) a polymerizable monomer (A) and an inorganic filler is blended
- inorganic fillers whose commercial products have already been surface-treated may be used as they are, or surface treatment may be further added by the above-mentioned method or the like.
- the amount of the surface treatment agent relative to the inorganic filler may be determined from the specific surface area of the inorganic filler etc.
- the optimum value may be determined, but in the case of an inorganic filler having an average particle diameter of 0.1 lwm or more, inorganic filler powder 100
- the amount is preferably in the range of 0.1 to 20 parts by weight, more preferably 0.1 to 15 parts by weight, and particularly preferably 0.1 to 10 parts by weight.
- the average particle size of the inorganic filler powder is the performance of the dental restorative composition. Although it may be appropriately selected in consideration of the above, it is preferably in the range of 0.001 to 100 wm, more preferably in the range of 0.010 to 30%, still more preferably in the range of 0.010 to 10 m, particularly preferably in the range of 0.0001. ⁇ 5 / m.
- the surface of the cured product is glossy, and further, it is possible to impart the performance such that the tooth or the dental material to be paired is not easily damaged.
- Carbon fiber or polymer type fiber may be used as long as the color tone and mechanical properties of the dental restorative material composition are not impaired.
- organic filler (C2) known organic powders can be used without restriction. Specifically, homopolymers and copolymers of (meth) acrylates, (meth) styrene and ⁇ - Copolymers of styrene-based monomers such as methyl styrene and butadiene, copolymers of acrylonitrile and butadiene, copolymers of acrylic ditolyl, benzene and styrene, alkyl (meth) acrylates and styrene-based monomers Copolymer, copolymer of Biel Acetate, alkyl (meth) acrylate and styrenic monomer, copolymer of alkyl (meth) acrylate and styrenic monomer and (meth) acrylate having at least one hydroxyl group in the molecule Preferred are elastomer powders such as coalesced styrene / alkyl (meth)
- the average particle size of the organic filler (C 2) may be appropriately selected in consideration of the performance of the dental restorative material composition, and is preferably in the range of 0.001 to 100 m, and more preferably 0.1. 01 to: L 00 m, more preferably 0.:! To 50 m.
- composition ratio of the above-mentioned polyfunctional polymerizable compound ( ⁇ ) to the polymerization initiator ( ⁇ ) and the filler (C) is the feeling of use of the dental restorative material composition paste, etc., the abrasiveness, glossiness and toughness of the cured product. It may be suitably determined from isomechanical properties etc., but (0) is preferably 0.010 to 10 parts by weight, more preferably 0.005 to 10 parts by weight, per 100 parts by weight. It is preferably 0.1 to 5 parts by weight, particularly preferably 0.01 to 3 'parts by weight.
- (C) is preferred to the (A) l O Or 1 to 900 parts by weight, more preferably 10 to 800 parts by weight, and still more preferably 50 to 750 parts by weight.
- the mechanical filler (C 1) and Z or the composite filler (D) described below have higher mechanical strength and abrasion resistance than the organic filler (C 2). Can be preferably used.
- the above-mentioned dental restorative composition can be pulverized after polymerization, and can be used as a composite filler (D) of the dental restorative composition.
- the production method of (D) is not particularly limited, and known methods such as solution polymerization, suspension polymerization, emulsion polymerization and bulk polymerization can be adopted, among which bulk polymerization under heating and pressure shown below is possible. However, since it can be produced in a short time and solvent is unnecessary, it can be preferably used.
- a paste consisting of the above-mentioned polyfunctional polymerizable compound (A), a thermal polymerization initiator (B 2) such as benzyl peroxide, and a filler (C) can be used as a universal stirrer, Banbury 1 mixer, biaxial screw Produce with a roll, kneader, etc., heat cure with a heat compression molding machine under pressure of 0.1 to 50MPa at 60 to 200 for several minutes to several hours, desired average particle size, particle size distribution
- a method of pulverizing with a pulverizer such as a ball mill or jet mill until it becomes.
- the polyfunctional polymerizable compound (A) a polymerizable monomer having the above-mentioned trifunctional or higher polymerizable monomer as a main component is preferable, and the filler (C) has an average particle diameter of 10; m.
- inorganic oxide powder (C 1) having a particle size of 1 ⁇ m or less is preferable, and nanosized inorganic oxide, in particular, colloidal silica called aerosil having an average particle diameter in the range of 0.01 to 0.1 m. Is preferred.
- the polymerization initiator (B) is preferably 0.005 to 10 parts by weight, more preferably 0.01 to 5 parts by weight, and more preferably 100 parts by weight of the polyfunctional polymerizable compound (A). 0.01 to 3 parts by weight.
- the average particle size of the composite filler (D) may be appropriately selected in consideration of the performance of the dental restorative material composition, but is preferably in the range of 0.50 to 100 / im. It is preferably 0.1 to 80 m, more preferably 1 to 70, and particularly preferably 1 to 50 m. When the particle diameter is in the particularly preferable range, it is particularly preferable because the mechanical properties are excellent, the surface of the hardened body is glossy, and further, the performance of hardly damaging the tooth or the dental material to be paired can be imparted.
- the composite filler (D) may be used as it is, or in order to improve the thermal stability of the dental restorative material composition, the peroxide present in (D) may be added with a reducing agent or added. You may reduce and use by heating. In the case of heating, if a polymerizing monomer (A 2) having a nitrogen atom, an ether bond or an aromatic ring is included, yellowing etc. may occur.
- the content of A 2) is preferably set to 50% by weight or less, preferably 30% by weight or less, and more preferably 20% by weight or less.
- (D) may be used after being surface-treated with a surface treatment agent such as the above-mentioned sunscreen coupling agent, or glycidyl (meth) acrylate etc.
- a surface treatment agent such as the above-mentioned sunscreen coupling agent, or glycidyl (meth) acrylate etc.
- a polymerizable monomer having an epoxy group a polymerizable monomer having a cyclic ether group such as tetrahydrofurfuryl (meth) acrylate, a polymerizable monomer having a hydroxyl group such as pentaerythritol tri (meth) acrylate, etc. It may be used by treating it with a polymerizable monomer having a functional group possessed by body particles and a functional group capable of hydrogen bonding or covalent bonding. In addition, even when the composite particles do not have a functional group, those obtained by polymerizing a double bond, a peroxide, etc. remaining in the composite and
- the dental restorative material composition of the present invention is preferably composed of a polymerizable monomer (E), the above-mentioned polymerization initiator (B) and a composite filler (D).
- polymerizable monomer (E) known polymerizable monomers can be preferably used, and specifically, the (meth) acrylic acid ester compounds shown above can be mentioned. Since the polymer derived from (A) to impart toughness is used for the composite filler (D), (A) may not necessarily be included in (E).
- polymerization initiator (B) known polymerization initiators can be used in the same manner as described above.
- the polymerization initiator (B 1), the thermal polymerization initiator (B2), the redox initiator (B 3) or a combination thereof is preferably used.
- a photopolymerization initiator (B 1) when used as a resin for dental crown resin or resin inlay, etc., it is preferable to use a photopolymerization initiator (B 1) because it can be cured at the timing desired by the operator after building up the resin structure. it can.
- compositions of the polymerizable monomer (E), the polymerization initiator (B) and the composite filler (D) may be suitably determined by evaluating the mechanical performance of the cured product thereof.
- (B) is preferably 0.01 to 10 parts by weight, more preferably 0.005 to 10 parts by weight, still more preferably 0.1 to 5 parts by weight, particularly preferably 0 0.1 to 3 parts by weight.
- (D) is preferably 5 to 900 parts by weight, more preferably 10 to 800 parts by weight, and still more preferably 50 to 750 parts by weight with respect to 100 parts by weight of (E).
- Such a ratio makes it possible to obtain a hardened dental restorative material which is excellent in mechanical properties, particularly toughness.
- the composite filler (D) and the above-mentioned filler (C) may be simultaneously contained.
- the filler (C) does not contain inorganic filler powder (C 1), organic filler powder (C 2), or a polymer of a polyfunctional polymerizable compound (A) containing a polyester chain.
- a variety of composite fillers (D 1) may be selected and used, but when (C 2) is mainly used, the organic fillers in the cured product of the dental restorative composition are selectively worn away. It is not preferable because the surface of the cured product may be roughened to promote intraoral contamination.
- the fillers which are preferably combined with the composite filler (D) are (C 1) and or (D 1).
- compositions of the polymerizable monomer (E), the polymerization initiator (B), the filler (C) and the composite filler (D) may be suitably determined by evaluating the mechanical performance of the cured product.
- (B) is preferably from 0.00001 to 100 with respect to 100 parts by weight of (E).
- the total of (C) and (D) is Preferably 1 to 900 parts by weight, more preferably 10 to 800 parts by weight Preferably it is 50 to 750 parts by weight.
- the ratio of the filler (C) to the composite restorative (D) may be appropriately determined in consideration of the application of the composition, the operability, the mechanical properties of the cured product, the abradability, the gloss, etc.
- the weight ratio of composite filler (D): filler (C) is preferably; ⁇ 9 9: 9 ⁇ : I, more preferably 5-9 5: 5 5-5, more preferably 2 0-8 0: 8 0-20.
- the restorative material composition of the present invention includes a stabilizer, an ultraviolet light absorber, a pigment of an organic type and an inorganic type, a dye, a viscosity modifier, a surface tension inhibitor, a wetting aid, an aggregate, and the like.
- a stabilizer an ultraviolet light absorber, a pigment of an organic type and an inorganic type, a dye, a viscosity modifier, a surface tension inhibitor, a wetting aid, an aggregate, and the like.
- Other polymerizable monomers, polymers and other components well known in the industry may be added.
- the cured product of the dental restorative material composition of the present invention has high mechanical properties, high toughness, and excellent performance in impact resistance and fracture resistance.
- toughness and impact resistance are as follows: 2 mm x 30 mm x 2 mm t test piece, 20 mm span span at room temperature, cross head speed l mm / min
- the dental restorative material composition of the present invention is used, bending energy of the cured product is significantly improved, so that it becomes possible to form a structure which is not easily damaged when an impact is applied to the cured product.
- the dental restorative material composition of the present invention is not limited to dental prosthetic materials and dental filling materials, and dental adhesives, dental resin cements, resin modified ionomers, denture bases, cavity liners, cavity cavities. It can also be suitably used for any resin-based material such as a coated dental material, a hypersensitivity-suppressing material, a dental nail polish, and a filler-containing dental material such as a finisher sealant or a dental material without a filler.
- a coated dental material such as a coated dental material, a hypersensitivity-suppressing material, a dental nail polish, and a filler-containing dental material such as a finisher sealant or a dental material without a filler.
- TMPT-3CL and D-TMP-4CL Polyfunctional weight containing three or more polyester chains with a polymerizable group bonded in one molecule
- TMPT-3CL and D-TMP-4CL manufactured by Shin-Nakamura Chemical Co., Ltd.
- TMPT trimethylolpropane trimethacrylate
- D-TMP ditrimethylolpropane tetramethacrylate
- TMPT-3 CL 100 g of TMPT-3 CL, 8 O g of colloidal silica (average particle diameter of primary particles: 0. 016 rn, manufactured by Nippon Aerosil Co., Ltd., R 972) was added to Kneader (BEN CH KNEADEAR, I rie S hokai Co. The mixture was kneaded with L. LTD. To make a paste, and then 0.5 g of benzil peroxide was added and further kneaded. This paste was heat polymerized in a heating and compression molding machine at a mold temperature of 120 ° C. under a pressure of 5 to 10 MPa for 10 minutes.
- This cured product is made of I TOH planet ball
- the resultant mixture was dry-milled for 30 minutes in a mill LA-PO 1 (material: alumina), classified with a # 280 mesh sieve, and the passed composite filler powder was collected.
- the average particle size of this composite powder was 20 m.
- TMPT-3CL The total amount of TMPT-3CL in Production Example 1 is TMPT-3CL (75 g), TMPT (2
- a composite filler powder (average particle diameter: 20 ⁇ m) was produced in the same manner as in Production Example 1 except that the total amount of TMPT-3CL in Production Example 1 was changed to D-TMP- 4CL (100 g). .
- a photopolymerizable monomer composition 4.0 g
- R 972 1.8 g
- This paste was defoamed under vacuum to remove air bubbles in the paste, and then filled in a 2 mm ⁇ 3 Omm ⁇ 2 mm t perforated Teflon mold on which a transparent glass plate was placed. After filling, place a transparent glass plate on the top of the Teflon mold and light cure for 3 minutes with a visible light irradiator (-L igh t II, manufactured by Moriyu Mfg. Co., Ltd.) to prepare a bending test piece. did. After immersing the test piece in water at 37 ° C for 24 hours, using an autograph (AGS-2000 G) manufactured by Shimadzu Corp., crosshead speed at room temperature 1. Omm Zmin, span 20 mm between spans Three-point bending test was performed to investigate bending characteristics. The results are shown in Table 1.
- Test pieces were produced in the same manner as in Example 1 except that the composite filler (CF 2 TMPT 3 ) was changed to the composite fillers of Production Examples 2 to 8 in Table 1, and the bending characteristics were examined.
- Test pieces were produced in the same manner as in Example 1 except that the composite filler (CF 2 TMPT - 3 ) was changed to the composite filler of Production Examples 9 to 10, and the bending characteristics were examined.
- UDMA / TMPT-3 CL / camphorquinone N, N-dimethylamino benzoic acid-2 n-butoxy ethyl 89. 5 / 9. 9/0. 3 / 0. 3 (wt) of a photopolymerizable monomer as a transparent glass plate Place in a 2 mm x 3 Omm x 2 m mt holed teflon mold. After filling, place a transparent glass plate on the top of the Teflon mold and light cure for 3 minutes with a visible light irradiator (Haiichi LG II, manufactured by Moriyu Mfg. Co., Ltd.) to prepare a bending test piece. did.
- a visible light irradiator Haiichi LG II, manufactured by Moriyu Mfg. Co., Ltd.
- Test pieces were produced in the same manner as in Example 9 except that TMPT-3 CL was changed to D-TMP-4 CL, and the bending characteristics were examined.
- the flexural strength was 86MPa and the flexural strength was 0.80J.
- Test pieces were produced in the same manner as in Example 9 except that TMPT-3CL was changed to triethylene glycol dimethacrylate, and the bending characteristics were examined.
- the flexural strength was 90 MP a and the flexural energy was 0.43 J. Compared with Example 9 and Example 10, although bending strength is substantially equivalent, it turned out that bending failure energy is 0 at about 12.
- UDMA / TMPT- 3 C LZ camphorquinone ZN, N-dimethylamino benzoic acid- 2-n-butoxy ethyl 89.5 / 9/0. 3/0. 3 (wt%) of a photopolymerizable monomer (7. 5 g) was put in a mortar and protected from light, and R 972 (2.55 g) was kneaded to form a paste, and then bubbles were removed under vacuum to remove air bubbles in the paste. A transparent glass plate was placed in a 2 mm ⁇ 30 mm ⁇ 2 mm t holed Teflon mold.
- a paste was prepared in the same manner as Example 1 except that TMPT-3 CL was changed to D-TMP-4 CL, and a bending test was performed.
- the bending strength was 116MPa, and the bending failure energy was 0. 076J.
- Photocuring was carried out for 3 minutes with Moriyu Mfg. Co., Ltd.) to prepare a bending test piece. After immersing the test piece in water at 37 ° C for 24 hours, using an autograph (A GS-2000 G) manufactured by Shimadzu Corporation, crosshead speed at room temperature 1. Omm Zmin, span 2 Omm. Three-point bending test was performed to investigate bending characteristics.
- the flexural strength was 98 MP a and the flexural failure energy was 0.40 J.
- the flexural strength was lower by about 10 MPa as compared with Example 1 1 and Example 12 and the flexural failure energy was also about 12.
Abstract
Description
Claims
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EP06713820A EP1854447A1 (en) | 2005-02-10 | 2006-02-09 | Dental restoration material composition |
JP2007502680A JPWO2006085682A1 (ja) | 2005-02-10 | 2006-02-09 | 歯科用修復材組成物 |
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KR101478208B1 (ko) * | 2013-10-07 | 2014-12-31 | 고찬중 | 지르코니아-레진 인레이 및 그 제조방법 |
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JPS6136205A (ja) * | 1984-07-27 | 1986-02-20 | Mitsui Petrochem Ind Ltd | 歯牙用硬化性樹脂組成物 |
JPS62120307A (ja) * | 1985-11-20 | 1987-06-01 | Mitsui Petrochem Ind Ltd | 歯科用硬化性樹脂組成物 |
WO2004017928A1 (en) * | 2002-08-21 | 2004-03-04 | Bisco, Inc. | Non-volatile dental compositions |
-
2006
- 2006-02-09 EP EP06713820A patent/EP1854447A1/en not_active Withdrawn
- 2006-02-09 KR KR1020077016536A patent/KR20070100945A/ko not_active Application Discontinuation
- 2006-02-09 WO PCT/JP2006/302679 patent/WO2006085682A1/ja active Application Filing
- 2006-02-09 JP JP2007502680A patent/JPWO2006085682A1/ja active Pending
- 2006-02-09 CN CNA2006800045595A patent/CN101222901A/zh active Pending
Patent Citations (3)
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JPS6136205A (ja) * | 1984-07-27 | 1986-02-20 | Mitsui Petrochem Ind Ltd | 歯牙用硬化性樹脂組成物 |
JPS62120307A (ja) * | 1985-11-20 | 1987-06-01 | Mitsui Petrochem Ind Ltd | 歯科用硬化性樹脂組成物 |
WO2004017928A1 (en) * | 2002-08-21 | 2004-03-04 | Bisco, Inc. | Non-volatile dental compositions |
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CN101222901A (zh) | 2008-07-16 |
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EP1854447A1 (en) | 2007-11-14 |
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