100 results about "Glass ionomers" patented technology

A golf ball comprising a core and a cover layer, wherein at least one of the core or cover layer comprises a hybrid material that contains fatty acid-modified glass ionomers, an ormocer or other inorganic-organic materials.

An object of the present invention is to provide a paste-type cement composition which while retaining adhesion to tooth substance, biocompatibility, surface curability and fluorine sustained-releasability which are the characteristics derived from the conventional glass ionomer cement, reduces water sensitivity which is shortcoming of the conventional glass ionomer cement, enables simple mixing operation, does not adversely affect on the various properties of a cured cement depending on a difference in operators or a skill degree, and can afford various stable properties. There is provided a two paste-type glass ionomer cement comprising a resin-based paste containing a hydrophobic polymerizable monomer and a polymer of acidic group-containing polymerizable monomers which are insoluble to each other, and a water-based paste containing a hydrophilic polymerizable monomer and water which are soluble to each other, in which an acid reactive filler is contained in at least one of pastes.

Disclosed are ionomeric compositions and ionomeric cements containing the compositions. The cements are useful in dental and orthopedic medicine.

The invention relates to glass ionomer for enhancing mineralization of hard tissue of mammals. The glass ionomer comprises, a inert biocompatible ceramic and a bioactive ceramic. The invention also relates to a method for enhancing mineralization of hard tissue of mammals with the aid of said glass ionomer. The invention further relates to the use of said glass ionomer for the preparation of products intended for treatment of defects of soft and hard tissue as well as the use of said glass ionomer for the preparation of a variety of products wherein the ability to enhance mineralization is advantageous.

Disclosed is a novel glass ionomer type dental cement composition comprising a first component comprising an aqueous solution of polymers made from monomers comprising acrylic acid, and a second, preferably substantially anhydrous, component comprising alkaline glass flux in a medium comprising water soluble / miscible monomers or pre-polymers, of such monomers, having at least one —OH group per molecule. The compositions offer more convenient handling, excellent reproducibility of desired properties of the cured material, improved strength, and extended shelf life.

To give high mechanical strength, particularly compression strength, and excellent operationality in a two-paste system, a dental paste glass ionomer cement composition comprises a first paste comprising an α-β unsaturated carboxylic acid polymer, a filler that is not reacted with the α-β unsaturated carboxylic acid polymer and is not in a monodisperse state in water, a silica aqueous sol containing colloidal silica having an average particle diameter of 1 to 100 nm dispersed in a monodisperse state in water to an SiO2 concentration of 1 to 50% by weight, and water, in prescribed amounts respectively, and a second paste containing fluoroalumino silicate glass powder in a prescribed amount, where the second paste sometimes contains a thickening agent comprising a water soluble polymer material and water, or a polymerizable monomer having no acid group.

An integral, one-piece silanated particle impregnated gutta percha core / cone technique employs a thin layer of a luting agent, such as glass ionomer cement with a machined gutta percha core / cone, precisely matches the preparation, thereby reducing leakage and achieving a hermetic seal. The hermetic seal is further enhanced by a mono-block bond that occurs between the silanated particles in the gutta percha and the appropriate chemical sealant. Optional cryogenic treatment of the gutta percha material changes its molecular weight, making it stiffer and conducive to forming an integral, one piece core / cone, without the need for a separate carrier core to install the tapered gutta percha core / cone within the root canal. Additionally, the tapered body of the core / cone may be reticulated in a slightly three dimensional texturized framework to increase surface area and therefore increase retention. Optional line demarcation indicia are also placed on the core / cone. Additionally, the head of the core / cone can be gripped by a delivery vehicle clasp.

An object of the present invention is to provide a paste-type cement composition which while retaining adhesion to tooth substance, biocompatibility, surface curability and fluorine sustained-releasability which are the characteristics derived from the conventional glass ionomer cement, reduces water sensitivity which is shortcoming of the conventional glass ionomer cement, enables simple mixing operation, does not adversely affect on the various properties of a cured cement depending on a difference in operators or a skill degree, and can afford various stable properties. There is provided a two paste-type glass ionomer cement comprising a resin-based paste containing a hydrophobic polymerizable monomer and a polymer of acidic group-containing polymerizable monomers which are insoluble to each other, and a water-based paste containing a hydrophilic polymerizable monomer and water which are soluble to each other, in which an acid reactive filler is contained in at least one of pastes.

A viscous material dispenser, and dispenser system and kit, can include a dispenser without a dispensing tip and one or a plurality of separate dispensing tips that are removably attachable to the dispenser. The dispenser can be used with many different types of viscous material containing capsules and cartridges, such as those containing composites, dental cements, glass ionomers and the like. In embodiments, the dispenser can incorporate an integral activator for multi-component composition cartridges, such as glass ionomer cartridges.

The dental resin modified glass-ionomer composition includes an acidic polymer; an acidic polymerizable monomer selected from 4-(meth)acryloxyalkyltrimellitic anhydride, 4-(meth)acryloxyalkyltrimellitic acid, and a combination thereof; a non-acidic polymerizable monomer; a fluoroaluminosilicate glass filler; water; and at least one polymerization initiator system. The dental resin modified glass-ionomer composition is useful for a dental restorative composition, an endodontic composition, and / or an orthodontic composition, and provides significantly enhanced adhesive property toward tooth structure.

The invention discloses a herbal bacteriostatic gel. The gel is mainly composed of the following components by weight percentage: 1.0-3.5% of troclat, 1.5-4.0% of sophora, 0.5-3.5% of Filia teng, 0.3-2.8% of a herba menthael extract, 0.4-3.0% of a motherwort extract, 40-65% of aloe gelvera, 0.3-2.0% of semen cnecos, 0.5-3.0% of radix angelicae sinensis, 0.1-3.0% of a fructus lonicerae extract, 0.3-2.3% of a cnidium extract, 0.1-1.2% of nano-silver, 0.8-1.2% of chlorhexidine acetate, 0.2-1.6% of vitamin E, 6-18% of glycerin, 0.8-2.0% of a glass ionomer cement, 0.5-3.0% of gel matrix carbomer, and 1.0-5.5% of triethanolamine. The herbal bacteriostatic gel provided by the invention adopts plants for antisepsis, is not added with any chemical preservative, and is safe. Through compatibility of all the components, the herbal bacteriostatic gel can balance flora, repair the microenvironment, does not change normal flora, is safer and healthier, has lasting and long-acting antibacterial and peculiar smell removing functions, and can quickly eliminate gynecological problems caused by various pathogenic bacteria.

The present invention relates to an anti-caries composition that includes Silver Diamine Fluoride (SDF) and a carrier, and methods for using the composition. In particular, the composition includes SDF in an amount between about 1% and about 40% by weight; and a carrier (e.g., natural adhesive, a synthetic adhesive, a drying adhesive, an emulsion adhesive, silicone, copal, glass ionomer, cyanoacrylate, composite resin, latex, epoxy, silicone, polyurethane, denture adhesives, or variants thereof or any combination thereof.The methods of the present invention relate to arresting caries or reducing the number of active caries lesions. The steps include applying the anti-caries SDF composition to one or more tooth surfaces for about 1-5 minutes, and rinsing the composition from the tooth surface. Another method of the present invention relates to applying a SDF composition to the tooth surface, curing the composition, to thereby treat caries. Caries is arrested or the number of active caries lesions is reduced, as compared to an individual whose tooth surface is not subjected to the SDF composition.

An integral, one-piece gutta percha core / cone technique employs a thin layer of a luting agent, such as glass ionomer cement with a machined gutta percha core / cone, precisely matches the preparation, thereby reducing leakage and achieving a hermetic seal. Optional cryogenic treatment of the gutta percha material changes its molecular weight, making it stiffer and conducive to forming an integral, one piece core / cone, without the need for a separate carrier core to install the tapered gutta percha core / cone within the root canal. Additionally, the tapered body of the core / cone may be reticulated in a slightly three dimensional texturized framework to increase surface area and therefore increase retention. Optional line demarcation indicia are also placed on the core / cone. Additionally, the head of the core / cone can be gripped by a delivery vehicle clasp.

A process for producing a water-soluble, hydrolysis-stable, polymerizable polymer, comprising a) a step of copolymerizing a mixture comprising (i) a first copolymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety, and (ii) a second copolymerizable monomer comprising one or more optionally protected primary and / or secondary amino groups and a second polymerizable organic moiety, for obtaining an amino group containing copolymer; b) a step of coupling to the amino group containing copolymer a compound having a polymerizable moiety and a functional group reactive with an amino group of repeating units derived from the second copolymerizable monomer in the amino group containing copolymer obtained in the first step wherein the optionally protected amino group is deprotected, so that polymerizable pendant groups are linked to the backbone by hydrolysis-stable linking groups, and, optionally, a step of deprotecting the protected carboxylic acid group after step (a) or step (b), for obtaining a polymerizable polymer.

To separate a catalyst for polymerizing a monomer contained in a liquid or paste dental composition containing at least a monomer, such as a dental resin cement, an autopolymerizing dental resin or a resin-reinforced dental glass ionomer cement, from the liquid or paste dental composition to thereby improve storage stability of the dental composition and reduce number of division of the dental composition, an extrusion nozzle for a dental composition mounted on one end of an extruder for extruding a liquid or paste dental composition containing at least a monomer, the extrusion nozzle contains a catalyst for polymerizing the monomer contained in the dental composition during extrusion, and the catalyst is attached to an inner wall of an extruding channel of the extrusion nozzle.

An integral, one-piece silanated particle impregnated gutta percha core / cone technique employs a thin layer of a luting agent, such as glass ionomer cement with a machined gutta percha core / cone, precisely matches the preparation, thereby reducing leakage and achieving a hermetic seal. The hermetic seal is further enhanced by a mono-block bond that occurs between the silanated particles in the gutta percha and the appropriate chemical sealant. Optional cryogenic treatment of the gutta percha material changes its molecular weight, making it stiffer and conducive to forming an integral, one piece core / cone, without the need for a separate carrier core to install the tapered gutta percha core / cone within the root canal. Additionally, the tapered body of the core / cone may be reticulated in a slightly three dimensional texturized framework to increase surface area and therefore increase retention. Optional line demarcation indicia are also placed on the core / cone. Additionally, the head of the core / cone can be gripped by a delivery vehicle clasp.

An integral, one-piece silanated particle impregnated gutta percha core / cone technique employs a thin layer of a luting agent, such as glass ionomer cement with a machined gutta percha core / cone, precisely matches the preparation, thereby reducing leakage and achieving a hermetic seal. The hermetic seal is further enhanced by a mono-block bond that occurs between the silanated particles in the gutta percha and the appropriate chemical sealant. Optional cryogenic treatment of the gutta percha material changes its molecular weight, making it stiffer and conducive to forming an integral, one piece core / cone, without the need for a separate carrier core to install the tapered gutta percha core / cone within the root canal. Additionally, the tapered body of the core / cone may be reticulated in a slightly three dimensional texturized framework to increase surface area and therefore increase retention. Optional line demarcation indicia are also placed on the core / cone. Additionally, the head of the core / cone can be gripped by a delivery vehicle clasp.

The present invention relates to a dental adhesive primer composition for use in dental fields employed to bond dental materials, such as restoration materials, dental crown materials, prosthetic materials, esthetic materials, orthodontic materials, preventive materials, core build-up materials and root canal materials, to ceramics, metals, resins, composite resins, glass ionomer cements, and hard biotissues (enamel or dentin of natural tooth). The present invention also relates to a dental adhesive primer composition including a dental adhesive composition which can be used not only in combination with another adhesive composition but also alone.

The invention relates to an adhesive coating composition for dentistry applied to dentistry field, used to bond dental materials, such as restoration materials, tooth crown materials, prosthesis materials, beautifying materials, rectifying materials, preventing materials, supporter constructing materials or pulp canal materials and so on, onto ceramics, metals, resin, compound resin, glass ionomer cement, hard biological tissues (enamel or dentine of natural teeth) and so on. The invention provides an adhesive coating composition for dentistry including an adhesive composition for dentistry which cannot only be used with another adhesive composition together, but also can be used independently.

A glass ionomer or resin modified glass ionomer coated blank is combined with glass ionomer or resin modified glass ionomer to create an integral mono-block post. prefabricated glass ionomer or resin modified glass ionomer post (with or without a coated blank) is cemented into the root canal with glass ionomer or resin modified glass ionomer, thereby creating a mono-block post as well as a mono-block core. The glass ionomer or resin modified glass ionomer cement is bonded to the canal wall and also through the bonding of the cement to the post surface of similar material. An alternate methodology involves syringing glass ionomer or resin modified glass ionomer in a malleable, semi-solid state into the post preparation space and a glass ionomer or resin modified glass ionomer coated blank is then inserted into the canal to a distance substantially equal to the depth of the post preparation.

A dental prosthesis, such as a crown, a bridge, inlay, onlay, a laminate veneer or an artificial tooth, or a dental prosthesis base material, such as an abutment, an abutment having a post, or a post, is made with a low cost in a short time by using dental glass ionomer cement, which is excellent in cost, mechanical strength and biocompatibility and has fluorine sustained releasability in general, by a method comprising steps of enclosing a mixture of dental glass ionomer cement into a mold in a shape fitting to the dental prosthesis or the dental prosthesis base material to be made, putting the mold into water, irradiating the whole mold with a microwave, and curing the dental glass ionomer cement in a short time, thereby a conventional problem of slow curing reaction in dental glass ionomer cement is solved.

An aqueous dental glass ionomer composition comprising (a) a reactive particulate glass, (b) a linear or branched polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the linear or branched polymer comprising acidic groups has a polymer backbone and optionally pendant groups, (c) optionally dispersed nanoparticles comprising grafted linear or branched polymer chains comprising acidic groups, and having a polymer backbone characterized in that a polymer backbone of the linear or branched polymer of component (b) and / or, if present, the grafted Sinear or branched polymer chains of component (c) are obtainable a process comprising (i) cyclopolymerizing or cyclocopolymerizing one or more compounds of the following formula (I).

A hard tissue regeneration material and a method for manufacturing the same are disclosed. The hard tissue regeneration material of the present invention comprises: ZnO particles selected from the group consisting of crystallized ZnO particles, crystallized ZnO nanorods, nano-ZnO hollow fibers, and a combination thereof; and at least one selected from the group consisting of polycarboxylate cement, glass ionomer cements, and collagen.

The present invention relates to an aqueous dental glass ionomer composition comprising(A) a reactive particulate glass,(B) a water-soluble, polymerizable polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the polymerizable polymer has a polymer backbone and hydrolysis-stable pendant groups having one or more polymerizable carbon-carbon double bonds, wherein the polymerizable polymer is obtainable by a process comprisinga) a step of copolymerizing a mixture comprising(i) a first copolymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety, and(ii) a second copolymerizable monomer comprising one or more optionally protected primary and / or secondary amino groups and a second polymerizable organic moiety,for obtaining an amino group containing copolymer;b) a step of coupling to the amino group containing copolymer a compound having a polymerizable moiety and a functional group reactive with an amino group of repeating units derived from the second copolymerizable monomer in the amino group containing copolymer obtained in the first step, wherein the optionally protected amino group is deprotected, so that polymerizable pendant groups are linked to the backbone by hydrolysis-stable linking groups,and, optionally, a step of deprotecting the protected carboxylic acid group after step a) or step b), for obtaining a polymerizable polymer;(C) a hydrolysis-stable, water-soluble monomer having one polymerizable double bond and optionally a carboxylic acid group, said monomer having a molecular weight of at most 200 Da;(D) a polymerization initiator system; and(E) a polymerizable hydrolysis-stable crosslinker having at least two polymerizable carbon-carbon double bonds.

The invention discloses a novel dental glass ionomer cement / fluorinated graphene composite material. Traditional commonly-used dental glass ionomer cement powder and fluorinated graphene are used as raw materials, and uniformly mixed by mechanical ultrasonic blending, the traditional commonly-used dental glass ionomer cement powder and fluorinated graphene are uniformly dispersed in absolute ethanol in a certain proportion, the dispersion is ultrasonically promoted, uniform grinding is performed, and the ethanol is completely evaporated to obtain a new dental material, namely glass ionomer cement and fluorinated graphene mixed powder. The novel dental glass ionomer cement / fluorinated graphene composite material has the advantages of simple preparation method, simple equipment, low price and easy mass promotion. The novel dental material has high microhardness, high compressive strength, high abrasion resistance, and high antibacterial property, and does not affect the color, fluoride ion release property and solubility of the material, the quality of filling materials can be greatly improved, and the clinical application range of glass ionomer cement is expanded.

Disclosed is a dental glass-ionomer cement composition, which includes polycarboxylic acid, water, and a glass powder including a metal component that is able to form an ionic bond with a carboxyl group of polycarboxylic acid in the presence of water and having a polymer material that is applied on at least a portion of the surface of the glass powder. The dental glass-ionomer cement composition can guarantee sufficient working time and can exhibit increased initial strength.

The invention discloses glass powder of water-based glass ionomer cement and a preparation method thereof, belonging to the field of inorganic non-metal materials. The powder is prepared from the following raw materials in percentage by mass: 25-35% of Al2O3, 30-45% of SiO2, 5-8% of MO, 2-8% of Na2O, 5-10% of ZnO, 3-9% of P2O5 and 5-15% of CaF2, wherein MO is one of SrO and CaO or a mixture of the two. The preparation method of the powder sequentially comprises the following steps: preparing the raw materials, fusing, quenching with water, pulverizing, performing surface treatment, drying, grinding and screening. Compared with the prior art, the invention has the advantages of low cost, stable product quality, fine mechanical comprehensive properties, X ray rejection, continuous fluorion release and uniform particle size distribution, and is suitable for industrial mass production.

Provided is a filler for dental glass ionomer cements, the filler to a surface of which a compound(s) having a carboxyl group(s) is / are bound via a silicon atom, for the purpose of providing: a filler suitable for dental glass ionomer cements that can provide a hardened cement having a high strength by being mixed with a dental glass ionomer cement composition, the filler that can be easily manufactured from a general inorganic powder as a raw material; and a manufacturing method of the filler for dental glass ionomer cements. The manufacturing method includes binding a carboxylic acid having an unsaturated double bond(s) exclusive of a (meth)acrylate compound to an inorganic powder whose surface is treated with a silane coupling agent having an unsaturated double bond(s).

The invention discloses a single-component photocuring composite with the fluoride ion release property for dental restoration and application of the composite. The raw materials used for preparing the single-component photocuring composite with the fluoride ion release property for dental restoration comprise water soluble or at least partially water soluble acid molecule structure-containing polymeric resin monomers or oligomer or a mixture thereof, glass ionomer cement filler with the fluoride ion release property and a photocuring polymerization initiating system. The photocuring composite is the single-component photocuring composite, use is convenient, the fluoride ion release property is achieved, and meanwhile the mechanical and physical properties are achieved; the composite can be used as gasket materials under dental adhesives and other dental restoration materials, pit and fissure sealing materials on surfaces of teeth, tooth filling repair / restoration materials, post-core composition materials for dental crown restoration, root canal orifice sealing materials and photocuring orthodontic cement bonding materials and used for other dental treatment and restoration application.

An aqueous dental glass ionomer composition comprising (a) a reactive particulate glass, and (b) a linear or branched polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the linear or branched polymer comprising acidic groups has a polymer backbone and optionally pendant side chains, (c) optionally dispersed nanoparticles, and (d) optionally a low molecular compound, characterized in that the glass ionomer composition comprises—S.sub.xH groups, wherein x is an integer of from 1 to 6, which crosslink the particulate glass and / or the linear polycarboxylic acid and / or the optional dispersed nanoparticles and / or the optional low molecular compound.