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97 results about "Dental composite resin" patented technology
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Dental Composite Resin Cement, Dental Primer and Dental Adhesive Kit Containing Them
ActiveUS20090048366A1Improve adhesionRich in hydrophilicityImpression capsOther chemical processesResin cementMaterials science
The present invention provides a dental resin cement which is excellent in a mechanical strength, workability and storage stability, and a dental primer which significantly improves adhesiveness of the dental resin cement both to enamel and dentin of a tooth. According to the present invention, a salt of barbituric acid is used as a polymerization initiator in the dual-cure two-paste type dental resin cement being excellent in workability and storage stability to improve the storage stability, and a primer containing barbituric acid and amine is applied to a surface of a tooth to significantly improve adhesiveness of the dental resin cement both to enamel and dentin of teeth.
Owner:SHOFU INC
Dental composite resin cement, dental primer and dental adhesive kit containing them
ActiveUS7879924B2Improve adhesionRich in hydrophilicityImpression capsOther chemical processesTooth enamelDentin
The present invention provides a dental resin cement which is excellent in a mechanical strength, workability and storage stability, and a dental primer which significantly improves adhesiveness of the dental resin cement both to enamel and dentin of a tooth. According to the present invention, a salt of barbituric acid is used as a polymerization initiator in the dual-cure two-paste type dental resin cement being excellent in workability and storage stability to improve the storage stability, and a primer containing barbituric acid and amine is applied to a surface of a tooth to significantly improve adhesiveness of the dental resin cement both to enamel and dentin of teeth.
Owner:SHOFU INC
Organic-inorganic nano composite resin and preparation method thereof
ActiveCN102643500AImprove mechanical propertiesGood micro-leakageImpression capsDentistry preparationsResin matrixBiocompatibility Testing
The invention relates to organic-inorganic nano composite resin and a preparation method thereof, belonging to the technical field of biomedical high-molecular materials. The organic-inorganic nano composite resin is characterized in that polyfunctional reactive nano monomer, i.e. polyhedral oligosilsesquioxane (POSS) is added on the basis of organic matrixes and inorganic fillers. The preparation method comprises the steps of adding the POSS into the resin matrixes, placing in a constant-temperature oven, fully dissolving the POSS in the resin matrixes and even agitating; adding an initiator system and evenly agitating; adding the inorganic fillers which are subject to surface silanization treatment, fully and evenly agitating in a vacuum agitator and removing air bubbles to obtain nano composite resin paste. By adding the POSS into dental composite resin, polymerization shrinkage can be obviously reduced, the mechanical property of the composite resin is comprehensively improved, the micro-leakage performance and the biocompatibility are good and the application prospect in the field of oral rehabilitation is wide. Besides, the preparation process is simple, the cost is lower and the popularization value and the application value are great.
Owner:HARBIN INST OF TECH
Image color data normalization and color matching system for translucent material
ActiveUS20170323460A1Image analysisCharacter and pattern recognitionDigital imagingChromatic contrast
A shade selection program is disclosed that predicts the shade choice with the smallest CIEDE2000 color difference for dental composite resin restorations when given a backing and target shade. By utilizing generated regression models, a database of spectral reflectance information, and principles of Kubelka-Munk layering, a highly accurate shade selection program was designed. Additionally, a blending model for quantification of color adjustment potential was developed. Systems and methods for correlating RGB data from the VITA Linearguide 3D Master and VITA Bleached Guide 3D Master shade guides with their spectroradiometric correlates through a regression model while indicating a methodology for validation of accuracy of digital imaging systems are disclosed.
Owner:OHIO STATE INNOVATION FOUND
Dental Polymerizable Composition
ActiveUS20080039592A1Improve antifouling performanceMaintains glazeImpression capsTeeth fillingEnd-groupFilling materials
A dental polymerizable composition comprising (a) a fluorine compound comprising a chain polymer having a main chain comprising a monomer unit having a hydrophilic group, and terminal groups comprising a fluoroalkyl group at each of both ends of the main chain; (b) a polymerizable monomer; and (c) a polymerization initiator. The dental polymerizable composition can be suitably used, for example, for dental composite resins, such as dental composite filler materials, crowning materials, and bonding materials; dental adhesive agents, such as teeth-straightening adhesive agents, cavity-coating adhesive agents, and tooth fissure sealing materials; denture base materials, denture base mucosal adjusting materials, fissure sealants, coating agents applied to tooth surface or dental prosthetic, surface glazes, and the like, and especially for various coating applications, for example, a fissure sealant, a coating agent to tooth surface or dental prosthetic, surface stains or a surface glaze, a hypersensitive inhibitor, a dental manicure, or the like.
Owner:KURARAY NORITAKE DENTAL
Dental composite resin material with low polymerization shrinkage rate
InactiveCN102188328AHigh molecular weightReduce viscosityImpression capsDentistry preparationsPolyesterEnd-group
The invention relates to a dental composite resin material with a low polymerization shrinkage rate, which belongs to the technical field of composite resin materials for repairing or remaking tooth. The dental composite resin material is formed in a mode that a composite resin monomer mixture is mixed with inorganic filler. The composite resin monomer mixture consists of a macro monomer, an acrylate monomer with a vinyl as an end group, an acrylate monomer containing two double bonds and an initiator. The macro monomer is an aromatic polyester low polymer with two or three double bonds. In the invention, the macro monomer is added into the composite resin material; and the macro monomer has the characteristics of low viscosity, high molecular weight and the like, so that the using amount of the inorganic filler can be increased and the polymerization shrinkage rate can be reduced, and thus, the edge micro leakage caused by volume shrinkage in the polymerization process of the materials is reduced and the occurrence probability of secondary caries is reduced.
Owner:吉林省登泰克牙科材料有限公司
Dentin reactive monomer mixture and preparing method, polycarboxylic oligomer and preparing method, and dental composite resin bonding systems
ActiveCN107028770AFacilitated DiffusionImprove adsorption capacityImpression capsDentistry preparationsWet bondingHydrophilic monomer
The invention provides a dentin reactive monomer mixture and a preparing method, a polycarboxylic oligomer and a preparing method, and dental composite resin bonding systems, wherein the dentin reactive monomer mixture and the polycarboxylic oligomer are used for constructing the dental composite resin bonding systems. The invention further provides a single-component dental composite resin bonding systems and a double-component dental composite resin bonding system. The bonding systems overcome the defect that due to the fact that a large number of hydrophilic monomers are introduced into a traditional wet bonding technique, cured resin can be easily degraded by esterase in saliva as the water absorption rate is increased remarkably.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY
Dual-curing dental composite resin
The invention discloses a dual-curing dental composite resin, and belongs to the technical field of dental prosthetic materials. The dental composite resin is packaged in two doses; the component 1 comprises an acrylics monomer, an inorganic filler and an oxidizing agent; the component 2 comprises an acrylics monomer, an inorganic filler and a reducing agent; a UV-curable initiator and a dye exist in the component 1 and / or the component 2. The traditional peroxide-tertiary amine system is replaced with a novel oxidation-reduction initiator system and a diacetyl acetone copper-thiourea system, so that anthochromia caused by the initiator after the resin is cured can be significantly weakened.
Owner:吉林省登泰克牙科材料有限公司
Dental polymerizable composition
ActiveUS7683103B2Improve antifouling performanceLittle discolorationImpression capsTeeth fillingEnd-groupFilling materials
Owner:KURARAY NORITAKE DENTAL
Method for preparing a dental composite resin material and articles prepared therefrom
ActiveUS20180221250A1High mechanical strengthHigh biosecurityImpression capsArtificial teethFlexural strengthTransmittance
The examples of the present application disclose a method for preparing a dental composite resin material and articles prepared therefrom, wherein the method comprises: (1) weighing in each of raw materials, including ethylenically unsaturated monomer, reinforcing fiber, filler, initiator, polymerization inhibitor and colorant; (2) mixing the weighed raw materials except reinforcing fiber, obtaining a composite resin monomer precursor; (3) impregnating the weighed reinforcing fiber into the composite resin monomer precursor for 1-5 hours, preferably 2-3 hours, at an impregnation negative pressure of less than or equal to 0.1 MPa, obtaining a composite resin monomer precursor-immersed reinforcing fiber; and (4) subjecting the composite resin monomer precursor-immersed reinforcing fiber to a solidification treatment, obtaining the dental composite resin material. The flexural strength of the dental composite resin material provided by the present application is above 600 MPa, and the light transmittance can be up to above 40%.
Owner:LIAONING UPCERA CO LTD
Photopolymerization initiator
ActiveUS7084182B2Easy to aggregateImprove stabilityImpression capsDentistry preparationsPhenyl groupFluorescent lamp
A photopolymerization initiator comprising (A) an α-diketone compound such as camphorquinone, (B1) an aliphatic amine compound such as triethanolamine or N-methyldiethanolamine, (B2) an aromatic amine compound such as ethyl p-dimethylaminobenzoate or N,N-dimethyl p-toluidine, and (C) a triazine compound substituted with a trihalomethyl group, such as 2,4,6-tris(trichloromethyl)-s-triazine or 2-phenyl-4,6-bis(trichloromethyl)-s-triazine. The photopolymerization initiator remains stable against the environmental light such as the indoor illumination light from a fluorescent lamp or the dental light illuminating the interior of the oral cavity, is excellently handled, is quickly cured by the irradiation with an intense light emitted from a light irradiator for polymerization, provides a cured body having excellent properties, can be stably preserved even at high temperatures, and is very useful as a dental composite resin.
Owner:TOKUYAMA CORP +1
Teeth composition capable of increasing abrasion resistance and obdurability based on composite modification theory
InactiveCN101507686ANot easy to peel offImprove bindingImpression capsDentistry preparationsSilicon dioxideMaterials science
The invention relates to a composition for teeth for promoting the wear resistance and the toughness by means of a composite modification principle, which belongs to the field of preparations for dentistry. The wear resistance and the toughness of the prior dental composite resin material used for tooth cavity filling need to be improved, and the proposal devotes to solving the problem. The composition comprises the following components in percentage by weight: 20 to 85 percent of nano-inorganic powder of which the surface is modified by a silane coupling agent, 8 to 70 percent of resin monomer (such as bisphenol A-glycidyl methacrylate), 5 to 25 percent of diluting agent (such as triethylene-glycol dimethacrylate), 0.25 to 2 percent of photo initiator (such as camphorquinone), and 0.5 to 3 percent of coinitiator (such as 2-(dimethylamino)ethyl methacrylate). The proposal emphasizes that the nano-inorganic powder contains silicon dioxide nano-rods which account for 10 to 80 percent of the weight of the nano-inorganic powder. The silicon dioxide nano-rods in the composition help to improve the wear resistance and the toughness of materials.
Owner:李榕卿
Preparation method of light-cured materials for teeth
InactiveCN101569592AImprove toughnessNot easy to peel offImpression capsDentistry preparationsSilica particleSilicon dioxide
The invention relates to a preparation method of light-cured materials for teeth, belonging to the field of preparation for medical and dental use. The technical proposal aims at solving the problem that current light-cured dental composite resin materials used for cavity filling are poor in wear-resisting properties and toughness. The method comprises the following steps: silane coupling agent is adopted to carry out surface modification on inorganic nano powder; the modified inorganic nano powder is evenly mixed with relevant monomers, thinners, light initiators, coinitiators and the like in dark places; bubbles are eliminated under vacuum. The technical proposal has the key point that the inorganic nano powder contains flaky silica particles accounting for 10-80% of the inorganic nano powder by weight; the width of the flaky silica particles fluctuates between 0.3 micron and 36.0 microns and the ratio of the width to the thickness of the flaky silica particles is between 3 and 40. The flaky silica particles added in the light-cured materials conduce to improving the wear-resisting properties and toughness of the light-cured materials.
Owner:中国人民解放军南京军区福州总医院四七六临床部
Composition for tooth with abrasion resistance and obdurability
InactiveCN101564359AHigh hardnessNot easy to peel offImpression capsDentistry preparationsCouplingPhotoinitiator
The invention relates to a composition for tooth with abrasion resistance and obdurability, which belongs the field of preparation for medical application and dentistry. The object of the invention is to solve the problem that the abrasion resistance and obdurability of dentistry compound resin material for filling tooth cavity is needed to be improved urgently. The composition provided by the invention comprises the following components, in mass percentages, nano inorganic powder treated by surface modification with silicone hydride coupling agent 20-85%; resin monomer such as bisphenol A glycidyl methacrylate 8%-70%; fluidifying agent such as triethylene glycol dimethacrylate 5%-25%; photoinitiator such as camphorquinon 0.25%-2%; coinitiator such as 2-(dimethylamino)ethyl methacrylate 0.5%-3%. The main point of the invention is the nano inorganic powder contains flaky alumina granules 10-80 wt.% based on its own weight. Microsized flaky alumina granule component in the composition provided by the invention contributes to improve abrasion resistance and obdurability of material.
Owner:中国人民解放军南京军区福州总医院四七六临床部
Low shrinkage dental composite resin containing organic-inorganic functional monomer and preparation method thereof
ActiveCN106074180AGood biological propertiesGood compatibilityImpression capsDentistry preparationsSolubilityFunctional monomer
The invention discloses a low shrinkage light-cured composite resin for dental restoration and a preparation method thereof. With multifunctional structural advantages, cage-like silsesquioxane can cooperate with an expansion monomer, resin matrix, silanized silica and other components to form a three-dimensional network structure during polymerization so as to reach the purposes of lowering polymerization shrinkage of the material and improving mechanical properties, etc. The preparation method consists of: stirring the components evenly to obtain uncured composite resin, then conducting ultrasonic dispersion, vacuum debubbling, pouring into a mold, visible light curing and other steps, thus obtaining the low shrinkage dental composite resin. The used cage-like silsesquioxane and spiro ortho expansion monomer are both liquid, and have good compatibility with composite resin, and a good dispersion effect can be achieved without introducing a solvent, the added cage-like silsesquioxane provides a network crosslinking point for the system, while the polymerization shrinkage of the composite resin is reduced, the mechanical properties of the material are improved, and the water absorption and solubility are reduced.
Owner:BEIJING UNIV OF CHEM TECH
Photoepolymerization initiater
ActiveCN1537870AHigh polymerization activityHigh mechanical strengthImpression capsDentistry preparationsP-dimethylaminobenzoic acidBenzoic acid
A photopolymerization initiator comprising (A) an alpha -diketone compound such as camphorquinone, (B1) an aliphatic amine compound such as triethanolamine or N-methyldiethanolamine, (B2) an aromatic amine compound such as ethyl p-dimethylaminobenzoate or N,N-dimethyl p-toluidine, and (C) a triazine compound substituted with a trihalomethyl group, such as 2,4,6-tris(trichloromethyl)-s-triazine or 2-phenyl-4,6-bis(trichloromethyl)-s-triazine. The photopolymerization initiator remains stable against the environmental light such as the indoor illumination light from a fluorescent lamp or the dental light illuminating the interior of the oral cavity, is excellently handled, is quickly cured by the irradiation with an intense light emitted from a light irradiator for polymerization, provides a cured body having excellent properties, can be stably preserved even at high temperatures, and is very useful as a dental composite resin.
Owner:TOKUYAMA CORP +1
Rambutan-like SiO2-based dental composite resin and preparation method thereof
InactiveCN108852858AIncrease mutual frictionImprove bindingImpression capsDentistry preparationsConvex structureResin matrix
The invention relates to a rambutan-like SiO2-based dental composite resin and a preparation method thereof. The composite resin comprises inorganic filler, a resin matrix and an initiator system, wherein the inorganic filler is rambutan-like SiO2. The preparation method comprises the following steps: mixing the rambutan-like SiO2, the resin matrix and the initiator system to obtain an uncured composite resin paste, and then performing light curing to obtain the dental composite resin. The dental composite resin provided by the invention has simple preparation and excellent performances, and the surface of the rambutan-like SiO2 has a convex structure similar to sawtooth; by the mutual occlusion between the sawtooth, the frictional force between SiO2 particles is improved, and the materialfracture due to relative slippage of particles is reduced; in addition, by utilizing the rough structure of the surface of SiO2, the contact area between the resin matrix and SiO2 is increased, the bonding ability of the organic-inorganic phase interface is improved, and thus the mechanical properties of the composite resin are improved.
Owner:DONGHUA UNIV
Photopolymerizable compositions
ActiveUS20110172323A1High polymerization activityShort timeCosmetic preparationsImpression capsDiketoneFluorescence
Disclosed are photopolymerizable compositions suitable for uses such as dental composite resins, and that comprise (A) a radical-polymerizable monomer, (B) a photopolymerization initiator that comprises (B1) an α-diketone compound, (B2) a photoacid generating agent, (B3) an aromatic amine compound, and (C) an organic filler containing a phthalate ester fluorescent agent.
Owner:TOKUYAMA DENTAL CORP
Preparation method of dentistry composite resin material capable of improving abrasion resistance and obdurability
InactiveCN101507687ANot easy to peel offImprove toughnessImpression capsDentistry preparationsResin-Based CompositeSilicon dioxide
The invention relates to a method for preparing a dental composite resin material aiming to improve the wear resistance and the toughness, which belongs to the field of preparations for dentistry. The wear resistance and the toughness of the prior dental composite resin material used for tooth cavity filling need to be further improved, and the proposal devotes to solving the problem. The method of the proposal comprises the following steps that: a silane coupling agent is utilized to perform surface modification on nano-inorganic powder, the modified nano-inorganic powder and materials such as a monomer (such as bisphenol A-glycidyl methacrylate), a diluting agent (such as triethylene-glycol dimethacrylate), a photo initiator (such as camphorquinone), and a coinitiator (such as 2-(dimethylamino)ethyl methacrylate) are mixed evenly under dark conditions, and bubbles are removed under vacuum conditions. The key point of the proposal is that the nano-inorganic powder contains silicon dioxide nano-rods which account for 10 to 80 percent of the weight of the nano-inorganic powder. The silicon dioxide nano-rods added into the material help to improve the wear resistance and the toughness of the material.
Owner:中国人民解放军南京军区福州总医院四七六临床部
Mesoporous material-base antibacterial composite resin for dental department and preparation method thereof
ActiveCN109620739AEffective and efficient loadGood for long-lasting sustained releaseImpression capsDentistry preparationsMesoporous materialResin-Based Composite
The invention relates to mesoporous material-base antibacterial composite resin for the dental department and a preparation method thereof. Raw materials comprise inorganic filling, organic monomers and a light initiator, and the inorganic filling is an antibacterial agent@mesoporous material. The preparation method includes the steps that the antibacterial agent@mesoporous material, the organic monomers and the light initiator are pre-mixed and then put into a three-roll grinding machine to be further mixed, and non-solidified composite resin paste is obtained through vacuum negative-pressuretreatment; finally, through solidifying of visible light, the composite resin for the dental department is obtained. The preparation method of the composite resin for the dental department is easy and convenient to implement, and the prepared composite resin for the dental department has an excellent antibacterial property and an excellent mechanical property, and has good application prospects.
Owner:DONGHUA UNIV
Preparation method of multicomponent composite materials used for single paste type cavity filling
InactiveCN101569593AImprove toughnessNot easy to peel offImpression capsDentistry preparationsMethacrylateApatite
The invention relates to a preparation method of multicomponent composite materials used for single paste type cavity filling, belonging to the field of preparation for dental use. The technical proposal aims at solving the problem that current dental composite resin materials used for cavity filling urgently need to be further improved in the aspects of wear-resisting properties and toughness. The method comprises the following steps: silane coupling agent is adopted to carry out surface modification on inorganic nano powder; the modified inorganic nano powder is evenly mixed with monomers such as bisphenol A glycidyl methacrylate, thinners such as triethylene- glycol dimethacrylate, light initiators such as camphorquinone, coinitiators such as dimethylamino ethyl methacrylate and the like in the absence of light; bubbles are eliminated in vacuum. The technical proposal has the key point that the inorganic nano powder contains short-rod like nano-particle hydroxyapatite accounting for 10-80% of the inorganic nano powder by weight. The short-rod like nano-particle hydroxyapatite added in the multicomponent composite materials helps to improve the wear-resisting properties and toughness of the materials.
Owner:中国人民解放军南京军区福州总医院四七六临床部
Dental resin composition utilizing reinforcing mechanism with mixed nanometer
InactiveCN101518501AHigh hardnessNot easy to peel offImpression capsDigestive systemSurface modificationMaterials science
The invention relates to a method for preparing dental fortified resin based on the principle of material hybridization modification, belonging to the field of medical and dental preparation. The wear-resisting property and the obdurability of the existing composite dental resin used for filling tooth cavities are in urgent need to be improved, and the invention aims at promoting the technological progress of the resin. The method includes the steps: carrying out the operation of surface modification to inorganic nano-sized powder under the utilization of silane coupling agent; uniformly mixing the modified inorganic nano-sized powder with monomer, such as bisphenol A methyl glycidyl acrylate, diluting agent, such as triethylene-glycol dimethacrylate, light trigger, such as camphorquinone, coinitiator, such as dimethylaminoethyl methacrylate, and other materials under photophobic conditions; and eliminating air bubbles under vacuum condition. The invention is characterized in that the interior of the inorganic nano-sized powder contains aluminium oxide nano rods which are 10 to 80 percent of the weight of the inorganic nano-sized powder. The aluminium oxide nano rods added inside contribute to the improvement of the wear-resisting property and the obdurability of the materials.
Owner:李榕卿
Fluoridated dental composite resin material contributing to resisting secondary caries
InactiveCN101703450AReduce releaseGentle releaseImpression capsDigestive systemMethacrylateMicrosphere
The invention relates to a fluoridated dental composite resin material contributing to resisting secondary caries, and belongs to the field of dental preparations. The conventional simple villiaumite-blended composite resin caries-filling material has the problems of too quick fluorine release, poor interfacial compatibility and no rigid support for a caries-filling body, and the scheme aims to solve the problems. The fluoridated dental composite resin material comprises the following components in percentage by weight: 20 to 85 percent of nano inorganic powder of which the surface is modified by a silane coupling agent, 8 to 70 percent of bisphenol A glycidyl methacrylate resin monomer, 5 to 25 percent of triethylene-glycol dimethacrylate diluent, 0.25 to 2 percent of camphorquinone photoinitiator, and 0.5 to 3 percent of dimethylamino ethyl methacrylate coinitiator; and importantly, the nano inorganic powder comprises 10 to 80 weight percent of fluorine-carrying mesoporous silica microspheres which can slowly release fluorine and strengthen the composite resin.
Owner:江门市焯越义齿有限公司
Dentistry compound resin material containing telechelic oligomer
InactiveCN101224169ANo significant change in operabilityNo significant change in feelImpression capsDentistry preparationsDental composite resinOligomer
The invention relates to a dental composite resin material containing telechelic oligomer pertains to the technical field of dental materials for dental repair or reconstruction. The dental composite resin material is composed of telechelic oligomer, methacrylate monomer, initiator, dye and inorganic filler, the trade name of the telechelic oligomer is XMAPt-MM100C, XMAPt-MM110C, XMAPt - RC100C and XMAPt-RC200C. The inorganic filler contains CaO-SiO2-Al2O3-P2O5-F fluorine-based silicate biological ceramic powder. The dental composite resin material of the invention is the dental material which has biological activity and can be light-cured or self-cured; as the telechelic oligomer is added, the using amount of the inorganic filler is increased, the invention has very low volume shrinkage ratio, the volume shrinkage ratio is lower than the similar products by more than 40 percent; and the cost of the materials is also reduced.
Owner:吉林省登泰克牙科材料有限公司
Dental Element For Abrading Dental Composite Resin
An abrading dental floss is characterized by dental floss formed of a circular fiber or fibrous material having a dental abrasive on the exterior portion thereof suitable for polishing, sanding and / or finishing (abrading) dental restorative material particularly dental composite resin. The dental abrading material is impregnated into or provided onto the dental floss. In one form, the dental abrading floss has an abrading section situated between lengths of non-abrading dental floss. The abrading section may be formed of an alternating pattern of non-abrasive portions and abrasive portions along a length of the floss. The abrasive portions may be of a single grit or texture of the dental abrasive or may be of different grits of the dental abrasive. In another form, the dental abrading floss has a single grit of a dental abrasive along and about its entire length. The dental abrasive may be of a single grit or different grits of the dental abrasive along its length. For different grits of the dental abrasive, it is preferred, but not necessary, that they gradually change in grit size.
Owner:ALLEN JEFFREY T
Composite resin with low contraction stress containing dimethacrylate with long oxyalkyl chain for dental department and preparation method of composite resin
ActiveCN108578249AReduce volumeReduce shrinkage stressImpression capsDentistry preparationsDental cavityDental composite resin
The invention discloses composite resin with low contraction stress containing dimethacrylate with a long oxyalkyl chain for the dental department and a preparation method of the composite resin. Thecomposite resin comprises 20-50 weight parts of a mixture containing methacrylate resin matrix and a light initiating system, and 50-80 weight parts of an inorganic filler. In the mixture containing the methacrylate resin matrix and the light initiating system, the weight of the methacrylate resin matrix accounts for 96%-99.4% of that of the mixture, and the weight of the light initiating system accounts for 0.6%-4% of that of the mixture. The composite resin with low contraction stress containing dimethacrylate with the long oxyalkyl chain for the dental department has relatively low system contraction rate and contraction stress, and the phenomenon of repair failure caused by marginal microleakage, repairing body falling and the like due to polymerization contraction and contraction stress when the composite resin is used for repairing the dental cavity can be reduced.
Owner:SOUTH CHINA UNIV OF TECH
High-strength dental composite resin and preparation method thereof
ActiveCN109730935AImprove mechanical propertiesIncrease contentImpression capsDentistry preparationsResin-Based CompositePhotoinitiator
The invention relates to a high-strength dental composite resin and a preparation method thereof. Raw materials of the composite resin comprises inorganic filler, organic monomers and a photoinitiator, and the inorganic filler is co-filler composed of spherical mesoporous filler and spherical filler. The preparation method comprises the steps that the spherical mesoporous filler, the organic monomers and the photoinitiator are pre-mixed and put into a three-roller grinder to be further mixed, the spherical filler is added, and a composite resin plaster which is not cured is obtained after vacuum negative pressure treatment is conducted; the dental composite resin is finally obtained after visible light curing. The dental composite resin has the advantages that the preparation method is simple and convenient, the mechanical performance is excellent, and the resin has better application prospects.
Owner:DONGHUA UNIV
Preparation method of dental composite resin containing function monomer PMDM and modified hydroxylapatite and use thereof
InactiveCN101390813AGood dispersionPacked tightlyImpression capsDentistry preparationsPolymer scienceFunctional monomer
The invention belongs to the biomedical high molecular material technical field, in particular to a preparation method and the application of dental composite resin which contains functional monomer PMDM and modified hydroxyapatite. The preparation method includes the steps: 5%-20% of functional monomer PMDM is added to the substrate resin and placed in a constant-temperature oven; under the temperature of 40 DEG C -80 DEG C, the PMDM is dissolved in the substrate resin and stirred evenly; then photosensitizer and organic amine activator are added to the substrate resin and stirred evenly; then modified inorganic filler is added and diluted in solvent; the amount of solvent is 5%-10% of the mass of the mixture; the mass fraction of inorganic filler is 20%-70% of the total mass; inorganic filler is stirred evenly; the mixture is placed in a vacuum oven and placed under 40 DEG C-80 DEG C for 2-4 hours; the composite resin paste is obtained after the solvent is volatilized completely and the air bubbles are eliminated. The oral cavity repair resin has the advantages of good bond performance, ultrastructure, higher mechanical intensity, higher biocompatibility, having wide application prospect in the oral cavity repair field, having reasonable preparation line, obtainable raw materials, lower price, simple preparation process, having important popularization and application values.
Owner:TONGJI UNIV
Dental composite-resin high-strength fiber periodontal bundle band and preparation method thereof
InactiveCN106344969AImprove bending strengthIncrease elasticityFibre typesSurgeryPeriodontal fiberFlexural strength
The invention relates to a dental composite-resin high-strength fiber periodontal bundle band, which is prepared by the following steps of adopting poly p-phenylene benzobisoxazole (PBO) reinforced fibers subjected to surface modification and micromorphology treatment as a reinforcement phase, adopting toughened resin subjected to nano-modification as a matrix, and mixing the PBO reinforced fibers and the toughened resin to form a composite material so as to prepare the periodontal bundle band. According to the dental composite-resin high-strength fiber periodontal bundle band provided by the invention, the problems that an existing periodontal fiber bundle band is insufficient in bending strength, modulus of elasticity in static bending, toughness and other mechanical properties are solved, and the high-performance PBO fiber and a three-dimensional braided structure are introduced into a periodontal bundle band material, so that the overall mechanical strength of the fiber bundle band is improved.
Owner:NANFANG HOSPITAL OF SOUTHERN MEDICAL UNIV
Preparation method of betulin-based antibacterial dental composite resin
ActiveCN112294659AImprove the mixing effectModification method is simpleImpression capsSteroidsMethacrylatePolymer science
The invention relates to a preparation method of betulin-based antibacterial dental composite resin. The preparation method comprises the following steps that (1) monosubstituted and disubstituted methacrylate betulin derivatives are prepared; and (2) the prepared betulin derivative are added into a traditional resin matrix, uniform mixing is carried out through a double-core dispersion machine toobtain uncured resin paste, and finally curing is carried out through visible light to obtain the dental restoration resin. The preparation method of the betulin-based antibacterial dental compositeresin is simple and convenient, and the betulin-based antibacterial dental composite resin has polymerization capacity. Compared with a traditional resin matrix, the composite resin prepared from an antibacterial organic monomer has the advantages that the mechanical property is not influenced, and meanwhile, obvious biocompatibility and antibacterial activity are shown.
Owner:DONGHUA UNIV
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