Entries |
Document | Title | Date |
20080262121 | Plurisubstituted Hydroxyapatite and the Composite Thereof With a Natural and/or Synthetic Polymer, Their Preparation and Uses Thereof - The present invention relates to a hydroxyapatite multi-substituted with, physiologically compatible ion species and to its biohybrid composite with a natural and/or synthetic polymer, which are useful in the preparation of a biomimetic bone substitute for treating bone tissue defects. Furthermore, the present invention relates to a method for their preparation and uses . | 10-23-2008 |
20080287565 | Polymerized Molded Body - The invention relates to polymerizable compositions which comprise 10-80% by weight of a reactive diluent based on acrylic acid or methacrylic acid derivatives, and 10-50% by weight of a monomer of the indicated chemical formula which is liquid or which can be dissolved in the formulation. The formula may contain amino acid residues or peptide sequences, especially such that are specific of the collagen. These structural elements allow the enzymatic degradation of the polymers of the inventive composition. | 11-20-2008 |
20090030109 | Dental composite restorative material - The present invention includes a dental restorative material for use in for example, class 1 & 2 posterior cavity restorations. The inventive material includes a modified BisGma resin. The invention also includes a method of restoring a damaged tooth that includes the application of bonding agent, applying energy such as by warming the material so that it can be extruded, and placing the material into the tooth cavity. | 01-29-2009 |
20090062422 | Spinal Intervertebral Disk Replacement Material for Nucleus Pulposus and Production Method Thereof - To provide a spinal intervertebral disk replacement material for nucleus pulposus which is relatively superior in load resistance that causes smaller damage of the anulus fibrosus by insertion during operation, remains in the anulus fibrosus stably after operation, and also allows prevention of the damage of the vertebral body cartilage endplate and the anulus fibrosus surrounding the prosthetic portion by sliding, and a production method thereof. The present invention relates to a spinal intervertebral disk replacement material for nucleus pulposus, comprising a dry polyvinylalcohol gel having a percentage of saturated water content of 18 to 50 wt % that changes its shape at a shape deformation rate of 150 vol % or more by water absorption. The present invention also relates to a method of producing the spinal intervertebral disk replacement material for nucleus pulposus above, comprising a step of preparing a polyvinylalcohol gel having a percentage of saturated water content of 20 to 53 wt %, a step of converting the polyvinylalcohol gel into a polyvinylalcohol hydrogel in the hydrated state and forming it into a shape having a hollow region, a step of irradiating the polyvinylalcohol hydrogel with γ ray at an intensity of 20 to 100 kGy, and a step of drying the PVA hydrogel in such a manner that the resulting hydrogel is so deformed that the hollow region disappears. | 03-05-2009 |
20090088494 | SOLID MATERIALS OBTAINABLE BY RING-OPENING METATHESIS POLYMERIZATION - The invention describes solid materials, especially for dental purposes like, e.g., composite milling blocks (CMBs), which can be obtained by ring-opening metathesis polymerization (ROMP). Also described is a method for obtaining such milling blocks, their use and applications of the compositions. | 04-02-2009 |
20090118390 | ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE ARTICLES AND METHODS OF FORMING ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE ARTICLES - The present invention generally provides implantable articles and methods of forming implantable articles from a crosslinked ultrahigh molecular weight polyethylene (“UHMWPE”) blend stabilized with Vitamin E. The crosslinked UHMWPE blend may be prepared by combining the UHMWPE material and vitamin E prior to irradiating the UHMWPE blend with electron beam radiation at a sufficient radiation dose rate to induce crosslinking. The crosslinked UHMWPE blend may be incorporated into a variety of implants, and in particular, into endoprosthetic joint replacements | 05-07-2009 |
20090124722 | PHASE SEPARATED, BRANCHED, COPOLYMER HYDROGEL - The present invention provides a hydrogel composition comprising a mixture of a hydrophilic polymer and a polymer chain modifying agent, wherein the polymer chain modifying agent is selected from the group consisting of an aromatic tetracarboxylic dianhydride, a titanate, and a polyetherimide. The present invention also provides a method for producing a phase separated, branched, copolymer hydrogel comprising a mixture of a hydrophilic polymer and a polymer chain modifying agent. The present invention also provides an implantable medical device comprising a phase separated, branched, copolymer hydrogel wherein the phase separated, branched, copolymer hydrogel is formed of a hydrophilic polymer and a polymer chain modifying agent. | 05-14-2009 |
20090131551 | POLYFUNCTIONAL COMPOUNDS AND USES AS IMPLANT MATERIALS - The synthesis and characterization of polymer core initiators are described herein. Polymer core initiators are used to prepare the polyfunctional prepolymers described herein, which may be optionally tethered. The polyfunctional prepolymers described herein are used to prepare cements, optionally with added co-monomers, for repairing and restoring tissues. | 05-21-2009 |
20100016464 | DENTAL COMPOSITIONS WITH NATURAL TOOTH FLUORESCENCE - The invention features a dental composition containing a polycyclic aromatic compound, such as 2-ethyl 9,10-dimethoxy anthracene (EDMOA), in an amount that provides the composition with fluorescence mimicking that of natural teeth. | 01-21-2010 |
20100036015 | COMPOSITIONS CURABLE BY RING OPENING METATHESIS POLYMERIZATION AT LOW TEMPERATURES AND THEIR APPLICATION IN THE DENTAL FIELD - The invention relates to a composition which is polymerizable by ring-opening metathesis polymerization (ROMP) comprising at least one monomer that is polymerizable by ROMP, at least one initiator of the Hoveyda-Grubbs type for initiating the ROMP and at least one retarder selected from the group consisting of heterocyclic a means having a ring with at least one N-atom and four or less other atoms constituting the ring bearing the at least one N-atom. The invention further relates to a process for the preparation of a composition which is polymerizable by ROMP, a dental material obtainable by polymerizing a composition according to the invention and the use of a substance selected from the group consisting of heterocyclic amines having a ring with at least one N-atom and five or less atoms constituting the ring bearing the at least one N-atom or of a mixture of two or more of such substances as a retarder in ROMP. | 02-11-2010 |
20100105801 | PVA-PAA HYDROGELS - The invention provides fabricated PVA-hydrogels, PVA-hydrogel-containing compositions, and methods of making the same. The invention also provides methods of implanting or administering the PVA-hydrogels, or the PVA-hydrogel-containing compositions to treat a subject in need. Methods of cross-linking pre-solidified or pre-gelled hydrogel particles and making cross-linked PVA-hydrogels, and cross-linked PVA-hydrogel-containing compositions also are disclosed herein. | 04-29-2010 |
20100113642 | MOULDABLE, BIODEGRADABLE MATERIAL - A mouldable, biodegradable medical material, comprising an epsilon caprolactone homopolymer. The material is useful as an implant and in particular for filling irregularly shaped cavities in biological tissue in vivo. The epsilon caprolactone homopolymer can be produced by polymerizing epsilon caprolactone monomers in the presence of a titanium alkoxide catalyst. | 05-06-2010 |
20100130637 | Self-dental adhesive composition - Self-adhesive dental restorative composition comprising (i) 10 to 40 percent by weight based on the total weight of the composition of a mixture of hydrolysis-stable polymerizable monomers of the following formula (I): wherein R is a m+n valent organic group having 1 to 20 carbon atoms and optionally 1 to 5 atoms selected from the group of nitrogen, oxygen and sulfur atoms; A independently represents a moiety of the following formula (II): wherein L is a hydrogen atom, a C1-6 alkyl group, a C3-8 cycloalkyl group, a C6-14 aryl group or a group of the following formula (III) wherein R′ is a hydrogen atom, a C1-6 alkyl group, a C3-8 cycloalkyl group, or a C6-14 aryl group; X is O, S, NH or NR″ wherein R″ is a C1-6 alkyl group, a C3-8 cycloalkyl group, a C6-14 aryl group; a is 0 or 1; M is a group of the following formula (IV) wherein Y is O, S, NH or NR′″ wherein R′″ is a C1-6 alkyl group, a C3-8 cycloalkyl group, a C6-14 aryl group; b is an integer of from O to 3; c is O or 1; d is an integer of from O to 3; provided that when b is O, then Y cannot be O; x is 0 or 1; y is 0 or 1; provided that x and y cannot be both 1, and provided that x cannot be 1 when L or a group of formula (III) is a hydrogen atom, and provided that when x is 0 then a is also 0, and provided that when y is 0 then b is greater than 0 or c is 0; B independently represents an acidic group; m is an integer of from 1 to 5; n is an integer of 0 to 3; and m+n is at least 2; (ii) 60 to 90 percent by weight based on the total weight of the composition of a filler; and (iii) an initiator system; wherein the portion of monomers of formula (I) wherein n is greater than 0 is at least 1 percent by weight based on the total weight of the mixture. | 05-27-2010 |
20100152317 | BIOCOMPATIBLE CERAMIC-POLYMER HYBRIDS - A hydroxyapatite ceramic hybrid material includes a hydroxyapatite ceramic structure having pores therein and a biodegradable polymer included in the pores in the hydroxyapatite ceramic structure. The biodegradable polymer can be a poly L-lactic acid polymer. A method for preparing a hydroxyapatite ceramic-biodegradable polymer hybrid material includes preparing a porous hydroxyapatite ceramic containing pores having an average pore diameter of 10 μm or larger; and forming a biodegradable polymer in the pores of the porous hydroxyapatite ceramic. The porous hydroxyapatite ceramic may be prepared by: preparing a slurry comprising hydroxyapatite fibers and heat-degradable particles in a selected solvent; filtering the slurry to obtain a paste; preparing a molded body using the paste; compacting the molded body to produce a green compact; and firing the green compact at a temperature at least 1000° C. to produce a porous hydroxyapatite ceramic structure. | 06-17-2010 |
20100179243 | Biodegradable Synthetic Bone Composites - The invention provides for a biodegradable synthetic bone composition comprising a biodegradable hydrogel polymer scaffold comprising a plurality of hydrolytically unstable linkages, and an inorganic component; such as a biodegradable poly(hydroxyethylmethacrylate)/hydroxyapatite (pHEMA/HA) hydrogel composite possessing mineral content approximately that of human bone. | 07-15-2010 |
20100197823 | Polymeric Resorbable Composites Containing an Amorphous Calcium Phosphate Polymer Ceramic for Bone Repair and Replacement - A method for making bioresorbable composites of a non-crystalline calcium phosphate ceramic synthesized within encapsulating microspheres of bioresorbable polymeric material for use in bone repair and replacement is provided. The composites include microspheres and scaffolds produced therefrom. | 08-05-2010 |
20100240794 | DENTAL RESIN COMPOSITION, METHOD OF MANUFACTURE, AND METHOD OF USE THEREOF - Disclosed herein are curable (meth)acrylate resins for dental compositions obtained by reacting an anhydride with an alcohol or an amine to obtain a carboxy ester or a carboxy amide and reacting the carboxy ester or carboxy amide with a (meth)acrylate monomer comprising an epoxide group or an oxetane group. | 09-23-2010 |
20100292363 | MATERIAL FOR BUILDING UP STUMPS - The invention relates to a polymerizable material for the production of a dental material for building up stumps, having the following characteristics: —the material comprises at least one polymerizable monomer, oligomer, and/or pre-polymer, —the total filler content of the material is 50 to 85% by weight, —the material comprises 5 to 25% by weight nano-filler, having a mean particle size d5o of 300 nm or less, wherein at least 50% by weight of said nano-filler has a particle size of 200 nm or less, —the material comprises 35 to 75% by weight micro-filler, having a mean particle size d | 11-18-2010 |
20110028589 | DENTAL POLYMERIZABLE COMPOSITION AND KIT THEREFOR - The present invention provides a dental polymerizable composition which has excellent handling property by the brush-dip technique and the bulk-mix technique, particularly excellent handling property by the brush-dip technique, contains few air bubbles, is excellent in color tone, polishability, mechanical properties and the discoloration resistance of a cured product at the time of curing and is used for many purposes such as the repair of a denture base or artificial tooth, a tooth crown prosthetic restoration and a temporary prosthetic restoration which is used until a bridge is completed when it is a two-composition type self-curing resin. | 02-03-2011 |
20110039974 | COMPOSITE MATERIAL - A composite material for producing dental prostheses with a matrix comprising a thermoplastic (A) contains reinforcing fibers (B) and at least one filler (C). The filler (C) has a Mohs hardness that is at most as great as the Mohs hardness of the reinforcing fibers (B). | 02-17-2011 |
20110046260 | DENTAL COMPOSITION AND COMPOSITE RESIN - The present invention provides a dental composition exhibiting both an excellent light diffusion property and excellent transparency, and having high mechanical strength and surface smoothness and gloss after polishing as a cured product and good handling properties as a paste. The present invention is a dental composition including: a polymerizable monomer (A); and an amorphous powder (B). The amorphous powder (B) has an average particle size of 1 to 20 μm, and includes silica-based fine particles and coatings of an oxide that cover the surfaces of the silica-based fine particles. The oxide contains a zirconium atom, a silicon atom, and an oxygen atom. The difference in refractive index between the cured product of the polymerizable monomer (A) and the amorphous powder (B) is 0.005 to 0.03. | 02-24-2011 |
20110046261 | DENTAL COMPOSITION AND COMPOSITE RESIN - A dental composition of the present invention includes: a polymerizable monomer component (A); and an amorphous filler (B) having an average particle size of 1 to 20 μm and including silica-based fine particles and coatings of an oxide that cover the surfaces of the silica-based fine particles. The oxide contains a zirconium atom, a silicon atom, and an oxygen atom. The dental composition contains 20 to 500 parts by weight of the filler (B) per 100 parts by weight of the polymerizable monomer component (A). The dental composition has a viscosity of 10 to 800 Pa·s. It is preferable that the filler (B) contain spherical particles, and that the percentage of the spherical particles in the filler (B) be at least 60%. | 02-24-2011 |
20110065828 | DENTAL COMPOSITION AND COMPOSITE RESIN - A dental composition of the present invention includes: a polymerizable monomer (A); an amorphous filler (B) having an average particle size of 1 to 20 μm and including silica-based fine particles and coatings of an oxide that cover the surfaces of the silica-based fine particles; and inorganic particles (C) having an average particle size of 0.1 to 1.0 μm. The oxide contains a zirconium atom, a silicon atom, and an oxygen atom. It is preferable that the dental composition contain 50 to 400 parts by weight of the filler (B) and 100 to 400 parts by weight of the inorganic particles (C) per 100 parts by weight of the polymerizable monomer (A). | 03-17-2011 |
20110082232 | Self-healing dental restorative formulations and related methods - Dental restorative formulations comprising an additive material and a capsule incorporated into the continuous phase of a dental material. The additive material includes one or more alkoxy groups and one or more vinyl groups. The capsule includes a catalyst and a molecule with one or more silanol groups. The dental restorative formulation is applied and polymerized to form a composite. When a disturbance occurs in the dental composite, the capsule ruptures so that the catalyst initiates a condensation reaction between the molecule with one or more silanol groups and the one or more alkoxy groups thereby healing the dental composite. | 04-07-2011 |
20110166251 | POLYMERIC BASED AND SURFACE TREATED METALLIC HYBRID MATERIALS AND FABRICATION METHODS THEREOF - Novel hybrid materials and fabrication methods thereof are provided. The novel hybrid materials can include a biodegradable polymer and a biodegradable metallic material. The hybrid material can also include a coupling agent between the biodegradable metallic material and the biodegradable polymer. A method of fabricating a hybrid material can include performing a surface treatment process on the biodegradable metallic material, and then either performing a solvent formation method or a thermal formation method. | 07-07-2011 |
20110196061 | INITIATORS AND CROSSLINKABLE POLYMERIC MATERIALS - The present invention relates to novel initiator systems, methods of use, and cured composition for dental, orthopedic and drug delivery purpose. Specifically, it relates to a crosslinkable prepolymer where crosslinking is initiated by a two part system and a composition comprising an admixture of a resorbable bone substitute and a crosslinkable prepolymer. It also relates to the composition formed by crosslinking the admixture and a delivery system for cross-linking the polymer. | 08-11-2011 |
20110237704 | Particle/Polyurethane Composites and Methods thereof - The present invention encompasses the finding that certain treatments (e.g., surface modifications) to particulate materials can provide surprising and unexpected benefits and/or features to composites and/or compositions as described herein. In some embodiments, such benefits and/or features may render particular composites and/or compositions particularly useful in a certain therapeutic context (e.g, for repair of tibial plateau, femoral head, craniofacial, or lateral mandibular body defects). The present invention demonstrates that certain composites and/or compositions wherein the particular material is or comprises defatted bone have surprising and beneficial attributes. | 09-29-2011 |
20110257292 | DENTAL CURABLE COMPOSITION AND COMPOSITE RESIN USING THE SAME - The present invention provides a dental curable composition exhibiting both excellent light diffusion and excellent transparency, and having high mechanical strength and surface smoothness and gloss after polishing as a cured product as well as good handling properties as a paste. The present invention is a dental curable composition including: a polymerizable monomer (A) having a refractive index of 1.52 to 1.58 after polymerization; inorganic particles (B) having a refractive index of 1.43 to 1.50; and inorganic particles (C) having a refractive index of 1.52 to 1.58. The inorganic particles (B) are aggregates of inorganic fine particles having an average primary particle size of 2 to 50 nm, and the content of the inorganic particles (B) is 0.1 to 10% by weight. | 10-20-2011 |
20120004342 | Silica-alumina mixed oxide compositions - The present invention relates to hetero-coagulated silica-alumina mixed oxide compositions that have a sharp refractive index and narrow refractive index dispersion between about 1.46 and 1.60. | 01-05-2012 |
20120016054 | DENTURE FORMED FROM A POLYMERIZABLE DENTAL MATERIAL BASED ON METHYL METHACRYLATES AND SUITABLE FOR THE PRODUCTION OF PLASTICS FOR DENTURES - Denture formed from polymerizable dental material formed of a liquid component containing
| 01-19-2012 |
20120129973 | HIGH STRENGTH DENTAL MATERIAL - The invention provides a high strength dental composition including polymerizable dental resins. The dental composition is useful as restorative material and for making various dental devices, such as artificial teeth, crowns and bridges of high strength dental polymeric material. | 05-24-2012 |
20120136088 | BIOCOMPATIBLE CERAMIC-POLYMER HYBRIDS AND CALCIUM PHOSPHATE POROUS BODY - A hydroxyapatite ceramic hybrid material, which includes a biodegradable polymer included in the pores in a hydroxyapatite ceramic structure, and a method thereof, and a calcium phosphate porous body, which is formed by an intertwining of fibrous calcium phosphates and includes a plurality of first pores formed where the fibrous calcium phosphates interconnect and plurality of equal diameter substantially spherical second pores with a larger inside diameter than the first pores, and a method thereof are provided. | 05-31-2012 |
20120157566 | Hybrid polymer network compositions for use in dental applications - A dental appliance comprising a hard, shaped body having at least one portion comprising a polymerized blend of: From 0% to about 50% of an uncrosslinked polymer capable of dissolving in component;From about 0% to 50% of a monofunctional polymerizable monomer;From about 0% to 40% of a highly crosslinked polymer in the form of ground particles having average diameters up to about 500 microns;From about 0% to 50% of a crosslinked polymer in the form of discrete particles having average diameters up to about 500 microns and being easily swellable by said monomer; and From about 5% to about 35% of a di- or polyfunctional crosslinking agent. | 06-21-2012 |
20120172487 | Artificial bone tissue and related methods - The present invention generally relates to an artificial bone composition, methods of making the composition, and methods of using the artificial bone. In one aspect, the present invention is directed to a composition for inclusion in artificial bone. The composition includes hydroxyapatite and between 0.5 weight percent and 1.5 weight percent of a polymer. The composition has a microstructure substantially similar to a marine carbonate skeleton. | 07-05-2012 |
20120202917 | Stress Relief for Crosslinked Polymers - The invention provides methods for inducing reversible chain cleavage of polymer chains in a crosslinked polymeric material or during polymerization of a polymeric material. Reversible cleavage of the polymer backbone is capable of relieving stress in the polymeric material as the bonds reform in a less stressed state. The invention also provides mixtures for making crosslinked polymeric materials, methods for making polymeric materials capable of reversible chain cleavage, materials made by the methods of the invention, and linear monomers containing reversible chain cleavage groups which are useful in the materials and methods of the invention. The mixtures of the invention may be dental restorative compositions used for forming dental restorative materials. | 08-09-2012 |
20120309864 | DENTURE BASE MATERIAL THAT IS FRACTURE-RESISTANT AFTER CURING AND IS OBTAINED FROM AUTOPOLYMERIZING OR COLD-POLYMERIZING COMPOSITIONS - A fracture-resistant denture base material is obtained from an auto-polymerising or cold-polymerising composition containing | 12-06-2012 |
20130012614 | POLYMERIZABLE ISOCYANURATE MONOMERS AND DENTAL COMPOSITIONS - Polymerizable isocyanurate monomers and dental compositions are described. A hardenable dental composition is described comprising at least one isocyanurate monomer that is a stable liquid at about 25° C. The isocyanurate monomer comprises at least one divalent linking group bonded to a nitrogen atom of a trivalent isocyanuric acid ring, wherein the divalent linking group comprises a moiety selected from ester, thioester, ether, or thioether, and combinations of such moieties and a terminal ethylenically unsaturated polymerizable group. | 01-10-2013 |
20130030080 | DENTAL COMPOSITION - There is provided a dental composition comprising at least one kind of filler and resin matrix, wherein the at least one kind of filler comprises a population of particles, wherein the population of particles has an average particle size from 110 to 500 μm, the maximum particle size of the population of particles is less than 1.4 times the average particle size, and the D30 of particle size distribution of the population of particles is no less than 0.9 times the average particle size. | 01-31-2013 |
20130030081 | CURABLE COMPOSITION AND CURED PRODUCT FOR DENTAL USE - The present invention provides a curable composition allowing a cured product having high aesthetic quality, strength and durability along with having high surface lubricating property. A curable composition in the present invention comprises: an inorganic powder and a polymerizable monomer, wherein the inorganic powder contains a spherical composite powder, the spherical composite powder has a complex of silicon dioxide and at least one of alumina and zirconia, and an amorphous part and a crystalline part are mixed in the spherical composite powder. A refractive index difference is not more than 0.05 between the spherical composite powder and a cured product obtained by curing only a compound excluded the spherical composite powder. | 01-31-2013 |
20130030082 | CURABLE COMPOSITION AND CURED PRODUCT FOR DENTAL USE - The present invention provides a curable composition allowing a cured product having high aesthetic quality, strength and durability along with having high surface lubricating property to be formed. The curable composition according to the present invention comprises: an inorganic powder and a polymerizable monomer. The inorganic powder contains a spherical crystallization control powder. The spherical crystallization control powder has a silicon dioxide content in the range of 97 to 100 mass %. An amorphous portion and a crystalline portion are mixed within the spherical crystallization control powder. A refractive index difference is not more than 0.05 between the spherical crystallization control powder and a cured product obtained by curing only constituents other than the spherical crystallization control powder. | 01-31-2013 |
20130041067 | Radically Curable Urethane Dimethacrylates and Compositions Thereof for Tougher Dental Prosthetics - A radically curable polyurethane composite for dental restorations, including provisional restorations, includes polyurethane dimethacrylate prepolymers that have at least one flexible unit within a polyurethane dimethacrylate backbone, and one or more dimethacrylate monomers. Composite materials made with polyurethane dimethacrylate prepolymers of the invention exhibit superior and optimal properties of flexural strength and deflection-at-break relative to conventional dental resin composites. Composite materials of the invention also provide improved melt-resistance in response to the heat of grinding or finishing, thereby improving the fit of restorations made from the composite and preserving the finishing instruments. Methods of treating a tooth using the radically curable polyurethane composite and methods of making the polyurethane dimethacrylate prepolymers with flexible units is also provided. A kit including the radically curable polyurethane composite is also described. | 02-14-2013 |
20130053471 | METHOD FOR THE PRODUCTION OF REINFORCED MATERIALS AND REINFORCED MATERIALS OBTAINED USING THIS METHOD - A method for making a composite material with non-spherical reinforcing particles embedded in a matrix, is disclosed. In this method, in a first step magnetic and/or superparamagnetic nanoparticles are attached to the non-spherical reinforcing particles, in a second step the resulting reinforcing particles are introduced into a liquid matrix material and/or a liquid matrix-precursor material, and in a third step the material of the matrix is solidified and/or polymerized and/or cross-linked. In accordance with the proposed invention prior to and/or during solidification and/or polymerization and/or cross-linking of the matrix material or the matrix precursor material, respectively, a magnetic field is applied so as to align the reinforcing particles in the matrix and this alignment is fixed in the matrix during and after the third step, wherein the non-spherical reinforcing particles preferably have a length (l) in one dimension of at least 0.5 μm and wherein the weight ratio of the nano-particles to the non-spherical reinforcing particles is below 0.25. | 02-28-2013 |
20130096226 | DENTAL COMPOSITE RESTORATIVE MATERIAL - There is provided a dental composite restorative material that has an excellent opalescent effect, no paste stickiness, small polymerization shrinkage during curing and is suitable for the restoration of the incisal edge of a tooth. This dental composite restorative material comprises: (A) a polymerizable monomer, (B) a spherical silica-based particle [I] having an average particle diameter in the range of from 0.1 to 0.5 μm and a standard deviation of particle diameter distribution within 1.30, preferably a silica-titanium group oxide-composite oxide particle, (C) an organic-inorganic composite filler prepared by dispersing the above-described silica-based particle [I] in an organic resin matrix, and (D) a polymerization initiator. | 04-18-2013 |
20130109780 | DENTAL COMPOSITIONS INLCUDING ORGANOGELATORS, PRODUCTS, AND METHODS | 05-02-2013 |
20130165545 | BONDING TOGETHER RESIN NANO CERAMIC BLOCKS - First and second smaller blocks of resin nano ceramic material are bonded together to form a larger resin nano ceramic block. | 06-27-2013 |
20130172441 | DENTAL MILL BLANK - The present invention provides a dental mill blank having excellent mechanical strength and having gloss retention high enough to maintain the gloss similar to that of natural teeth in an oral cavity for a long period of time. The present invention is a dental mill blank made of a cured product of a curable composition containing: a polymerizable monomer (A); and a spherical inorganic filler (B) having an average primary particle size of not less than 0.1 μm and less than 1 μm. | 07-04-2013 |
20130190422 | DENTAL COMPOSITION SUITABLE FOR GRINDING WITH AUTOMATIC GRINDING APPARATUS - Provided is a dental composition comprising a first largest group of particles and resin matrix, wherein the first largest group consists of particles whose particle size ranges from 0.7 to 1.5 times the representative particle size of the first largest fraction in a population of particles included in the composition whose particle size ranges from 110 to 1000 μm; and wherein the ratio of the number of particles included in the first largest group to the number of particles whose particle size ranges from 0.5 to 2.0 times the representative particle size of the first largest fraction is equal to or more than 0.8. | 07-25-2013 |
20130210959 | DENTAL COMPOSITIONS COMPRISING SEMI-CRYSTALLINE RESIN AND NANOCLUSTER FILLER - Curable dental compositions, dental articles, and methods of making or using such compositions or articles are described. In one embodiment, the curable dental restoration composition comprises a resin system comprising a free-radically polymerizable semi-crystalline resin having a molecular weight no greater than 2000 g/mole and at least 50 wt-% of nanocluster filler. | 08-15-2013 |
20130237632 | SHAPE MEMORY POLYMER MEDICAL DEVICE - Methods and apparatus described herein may utilize activation of an SMP material to install medical devices with respect to a surgical site. Activation of the SMP material may be performed with the use of a triggering force and/or a constraint applied to the SMP material. Activation using a triggering force and/or a constraint may be used to create varied activation rates in an SMP material and varying speeds and times of activation to occur in shape memory polymers in devices. The disclosure also describes devices using wedge elements for activation of shape memory response in the SMP material. | 09-12-2013 |
20140045967 | NEW PROSTHETIC DEVICES - A prosthetic device made of a first specific type of polyarylene, taken alone or in combination with a second specific type of polyarylene, featuring some unexpected advantages such as a very high strength and stiffness, good elongation properties, high chemical resistance, good biocompatibility as well as an outstanding impact resistance. | 02-13-2014 |
20140121295 | SHAPE MEMORY POLYMER - A polymer is composed of a linear chain acrylate and a multi-functional acrylate cross-linker. The polymerized composition exhibits a transition at a temperature between about 34° C. and about 50° C. The polymerized composition exhibits shape memory effects. In one embodiment, the linear chain is tert-butyl acrylate and the crosslinker is polyethylene glycol dimethacrylate. The resultant shape memory polymers may be used in medical devices to provide devices with different shapes for pre and post implantation. | 05-01-2014 |
20140206792 | DENTAL RESTORATIVE MATERIAL - The present invention discloses a dental restorative material comprising 10-50 mass % of (A) a polymerizable monomer, 5-80 mass % of (B) an organic-inorganic composite filler which is prepared by dispersing an inorganic fine filler having an average particle diameter of 1 μm or smaller in an organic matrix and has an average particle diameter of 5.0-50 μm, and 10-60 mass % of (C) a third component, i.e., an inorganic filler having an average particle diameter of 1.1-5.0 μm, wherein the absolute value of the difference between the refractive index [nC] of the inorganic filler (C) and the refractive index [nB] of the organic-inorganic composite filler (B) (i.e., |nC−nB|) is 0.005-0.07 at 32° C. and the absolute value of the difference between the refractive index [nA] of the cured product of the polymerizable monomer (A) and the refractive index [nC] of the inorganic filler (C) (i.e., |nA−nC|) is 0.005-0.05 at 32° C. | 07-24-2014 |
20140213687 | ORGANIC-INORGANIC COMPOSITE FILLER, AND METHOD FOR PRODUCING THE SAME - An organic-inorganic composite filler contains: inorganic aggregate particles formed by aggregation of inorganic primary particles with an average particle diameter of 10 to 1000 nm; an organic resin phase including a cured polymer of a polymerizable monomer covering surfaces of the inorganic primary particles and bonding the inorganic primary particles to each other, and a water absorbing resin; and aggregation gaps with a volume of micropores formed between parts of the organic resin phase of 0.01 to 0.30 cm | 07-31-2014 |
20140256843 | BIOMATERIAL FOR OSTEOSYNTHESIS - A biomaterial for the manufacture of osteosynthesis articles is provided. The biomaterial contains a semi-aromatic polyamide matrix along with a reinforcing means selected to reinforce the matrix. The biomaterial has dynamic mechanical properties analogous to calcified tissue. | 09-11-2014 |
20140275326 | DENTAL FILLER AND COMPOSITIONS - Described herein is a dental filler material having a core made of a core material and a shell made of a shell material, where the shell material coats or covers at least a portion of the core. | 09-18-2014 |
20140364533 | RESIN COMPOSITE, DENTAL MATERIAL, BONE SUBSTITUTE MATERIAL AND METHOD FOR MANUFACTURING RESIN COMPOSITE - Provided are: a resin composite, which is produced using: 100 parts by mass of a resin having a melting point or fluidization temperature of from 200 to 500° C.; and 40 to 400 parts by mass of inorganic particles surface-treated with a treatment-agent having a reactive double bond group or an aromatic group at an end thereof, the resin composite having an rate of 55% or more a manufacturing method for the resin composite; and a dental material using the resin composite: And the rate (%) represents 100×{EP/(EP+V)}; EP represents the number of the inorganic particles per square region measuring 10 μm on each side exposed in a polished surface of the resin composite; and V represents the number of voids per square region measuring 10 μm on each side formed through elimination of the inorganic particles in the square region where the EP is counted. | 12-11-2014 |
20150011673 | ORGANIC/INORGANIC COMPOSITE, MANUFACTURING METHOD THEREFOR, DENTAL MATERIAL, AND BONE SUBSTITUTE MATERIAL - Provided are: an organic/inorganic composite, and a manufacturing method therefor; and a dental material and bone substitute material manufactured using the organic/inorganic composite. The organic/inorganic composite includes: (A) 100 parts by mass of a thermoplastic resin containing as a main component at least one kind selected from a polyarylketone resin and a polysulfone resin; and (B) 60 to 300 parts by mass of an inorganic particle mixture dispersed in the thermoplastic resin, in which the inorganic particle mixture contains inorganic particles each having a particle diameter of from 200 to 700 nm at a content of 25 vol % or more, and inorganic particles each having a particle diameter of from 40 to 100 nm at a content of 10 vol % or more. | 01-08-2015 |
20150133578 | BIOACTIVE LOAD-BEARING COMPOSITES - Methods of preparing bioactive composites are described. Also described are methods of molding such composites. Shaped bodies comprising bioactive composites are further described. | 05-14-2015 |
20150141545 | BEARING MATERIAL AND METHOD OF PRODUCING THE SAME - An object of the present invention is to provide a method of producing a bearing material having excellent wear-resistance and oxidation resistance. The method of producing a bearing material | 05-21-2015 |
20150297802 | POLY (DIOL CO-CITRATE) HYDROXYAPATITE COMPOSITE FOR TISSUE ENGINEERING AND ORTHOPAEDIC FIXATION DEVICES - The present invention is directed to a novel poly(diol citrates)-based bioceramic composite materials created using completely biodegradable and a bioceramic material polymers that may be used in implantable devices. More specifically, the specification describes methods and compositions for making and using bioceramic composites comprised of citric acid copolymers and a bioceramic material. | 10-22-2015 |
20150306279 | Prosthetic device - A prosthetic device comprising at least one part made of a polymer composition [composition (C), herein after] comprising at least one part made of a polymer composition [composition (C), herein after] comprising a polymer composition [composition (C)] comprising at least one polyaryletherketone polymer [(PAEK) polymer], and at least one nitride (NI) of an element having an electronegativity (c) of from 1.3 to 2.5, as defined in <>, CRC Press, 64 | 10-29-2015 |
20150352250 | ARTIFICIAL BONE FORMS AND COMPOSITIONS FOR APPROXIMATING BONE - An artificial bone construct which approximates one or more components of a skeletal system, wherein the artificial construct is used in the testing and development of new surgical procedures, ballistics testing, implantable devices, etc., and wherein the artificial construct closely approximates the physical and mechanical properties of one or more components of a skeletal system. The artificial bone construct can be implanted in a human body. | 12-10-2015 |
20160008232 | DENTAL FILING AND RESTORATIVE MATERIAL KIT | 01-14-2016 |
20160074288 | INTRAORAL FIXING COMPOSITION - An intraoral fixing composition, containing: titanium apatite, which is obtained by substituting part of calcium in calcium hydroxyapatite with titanium, wherein the intraoral fixing composition is fixed at an intraoral site in an unreleasable state. | 03-17-2016 |
20160081888 | INFILTRANT FOR DENTAL APPLICATION - The invention provides an infiltrant for dental application that comprises crosslinking monomers. In accordance with the invention the infiltrant has a penetration coefficient PC>50 cm/s, and the crosslinking monomers, based on the total mass of monomers, comprise at least 5% by weight of crosslinking monomers having at least three polymerizable groups and not more than 95% by weight of crosslinking monomers having two polymerizable groups. | 03-24-2016 |
20160136059 | HARDENABLE DENTAL COMPOSITION CONTAINING A MIXTURE OF AGGLOMERATED AND AGGREGATED NANO-PARTICLES, KIT OF PARTS AND USE THEREOF - The invention relates to a dental composition comprising—filler (F1) comprising aggregated nano-sized particles in an amount of from about 30 to about 70 wt. %, —filler (F2) comprising agglomerated nano-sized particles in an amount from about 1 to about 20 wt. %, —hardenable component (A1) being an urethane(meth)acrylate with a functionality of at least 2 and having a molecular weight from about 400 to about 3,000 g/mol, —hardenable component (A2) being a radically polymerizable (meth)acrylate with a functionality of at least 2 being different from component (A1), —redox curing initiator system, the dental composition not comprising non-agglomerated nano-sized filler in an amount above about 10 wt. %, wt. % with respect to the weight of the whole composition. The dental composition is in particular useful as or for production of permanent crown and bridges, inlays, onlays and veneers. | 05-19-2016 |
20160175203 | DENTAL MATERIAL INCLUDING PROPYLBARBITURIC ACID POLYMERIZATION CATALYST | 06-23-2016 |
20160185804 | SILANE AND SILICIC ACID (HETERO)POLYCONDENSATE HAVING AROMATIC COMPOUNDS LINKED VIA COUPLING GROUPS WHICH ARE SUITABLE AS OR FOR MATRIX SYSTEMS HAVING HIGH TRANSLUCENCY AND GOOD MECHANICAL PROPERTIES - The present invention relates to compounds and silicic acid (hetero)polycondensates comprising structures of formulas (1) and/or (2), | 06-30-2016 |
20160250107 | DENTAL COLOR TONE ADJUSTMENT MATERIAL KIT | 09-01-2016 |