51 results about "Dental filling materials" patented technology

A dental filling material comprising a thermoplastic polymer. The thermoplastic polymer may be biodegradable. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.

An dental filling material comprising a thermoplastic polymer. The thermoplastic polymer may be biodegradable. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.

A portable compact emergency dental kit is provided for administering first aid in cases of avulsed, loose, or broken teeth. The kit contains step-by-step instructions for rendering the first aid even by persons untrained in dentistry. The kit contains a quantity of tooth-preserving fluid for temporary retaining knocked out teeth, as well as a tube of dental filling material that sets shortly after being dispensed from the tube. A quantity of gloves, sterile gauze, antiseptic mouth rinse, ice packs and antibacterial wipes is provided in the kit holder.

In an endodontic procedure, after the working of a root canal by instruments to remove material and shape the walls of the canal, irrigant is supplied via a microcannula. A vacuum is applied via a tube which is inserted partway down the root canal. The tube and microcannula pass through a material created by a standard dental filling material of a composite nature which provides a seal at a position near the top of the coronal opening. The irrigant is supplied in a manner sufficient to ensure delivery to a side vent of the microcannula. The vacuum at the end of tube draws the irrigant and debris up from the apex of the root canal into the tube. The side vent may have a plurality of more round holes, a diagonal slit, or a U shaped slit, or any other shape. The vent opening should not extend more than approximately 0.75 mm from the closed spherical tip of the microcannula, it must be burr free any the opening must be smaller than the internal diameter of the microcannula.

An dental filling material comprising a thermoplastic polymer. The thermoplastic polymer may be biodegradable. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.

A dental filling material comprising an inner core and outer layer of material disposed and surrounding the inner core, both the inner core and outer layer of material each containing a thermoplastic polymer. The thermoplastic polymer may be biodegradable. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.

The invention discloses a preparation method of a low-volume-shrinkage antibacterial dental resin composite material. The preparation method comprises the following steps: mixing and stirring bifunctional acrylate resin and phosphoryl-containing acrylate resin to obtain a dental resin solution; adding a silver source compound, and mixing uniformly with a photoinitiator after the silver source compound is dissolved; then adding an inorganic filler; and finally, injecting into a mold, and irradiating by adopting blue light or ultraviolet light. According to the preparation method disclosed by the invention, a bisphenol monomer with rigid radicals is adopted to prepare a dental resin monomer to reduce the volume shrinkage during curing of a material, and bidirectional amphipathic molecules containing phosphonyl and unsaturated double-bond functional groups are used as a surface modifying agent to ensure that on the one hand, the interface action between the resin and the inorganic filler is improved, and on the other hand, by virtue of the complexing action between the phosphonyl functional groups and silver ions, the silver source compound is dissolved, the process of releasing nano silver is controlled, and a long-acting antibacterial effect is achieved, so that a dental filling material which has low volume shrinkage, excellent mechanical property and antibacterial effect is prepared.

A two-step system for chemically bonded ceramic (CBC) materials, and especially a dental filling material or an implant material. The system includes an initial working part-system to provide for improved early-age properties and a second main system to provide for improved end-product properties including bioactivity. The systems interact chemically. The invention also relates to the powdered materials and the hydration liquid, respectively, as well as the formed ceramic material.

The invention provides a tuna fishbone meal material, a preparation method and application thereof. The preparation method of the tuna fishbone meal material provided by the invention includes: conducting preliminary crushing on tuna fishbone to obtain a fishbone preliminary material, cooking the fishbone preliminary material at 90-100DEG C and under 1.0-1.1bar for 1-4h to obtain a fishbone initial material; soaking the fishbone initial material in a sodium hydrogen sulfite buffer solution with a mole concentration of 4-7% for 2-4h, then conducting calcinations at 800-1000DEG C for 4-10h to obtain a fishbone material, and then carrying out crushing and sieving treatment to obtain fishbone meal material with different particle size ranges. The invention additionally provides the tuna fishbone meal material prepared by the method. The invention also provides application of the tuna fishbone material as a medical orthopaedic filling material. The tuna fishbone material can be used as an individual bone filling material and dental filling material, and also can be compounded with other materials into widely applied biomedical materials.

The invention relates to implant materials that are based on hydraulic cements in the form of one or more pastes, suspensions or dispersions that contain mineral and/or organic and/or organomineral solids and that react, when combined or when reacted with an aqueous liquid, to a solid in a cement-type initiation reaction. The invention also relates to the use of these materials as technical, medical-technical and/or pharmaceutical products, especially as bone cements, bone replacement materials, bone glues, dental filling materials and implantable active ingredient carriers. The implant materials according to the invention in the form of one or more pastes, suspensions or dispersions that contain mineral and/or organic and/or organomineral solids are formulated in an excipient liquid in such a manner that the pastes, suspensions or dispersions are stable in storage at normal conditions over a prolonged period of time and that they react, when combined with an aqueous liquid or when added to an aqueous liquid, in a cement-type initiation reaction and set to a solid. The excipient liquid of the mineral paste, suspension or dispersion is substantially water-free, and water immiscible or insoluble or hardly soluble in water in the chemical sense.

The present invention relates to a composite material exhibiting a low or even negligible volumetric shrinkage upon curing, or even a small expansion (e.g. up to 0.5%), in particular composite materials in the form of dental filling materials. The present invention also relates to a method of controlling volumetric shrinkage of a composite material upon curing, and to a method of reconstructing a tooth. The present invention also relates to ultrasonic curing of dental filling materials. The present invention further relates to a population of zirconia particles and methods for preparing such zirconia particles (e.g. zirconia in the tetragonal phase or zirconia in the cubic phase). The martensitic transformation of the filler ingredients is, e.g., triggered by application of ultrasound or by a chemical trigger.

A composition of dental filling materials comprising a urethane oligomer obtained from a reaction between natural oil-derived polyols and a diisocyanate in excess to create terminals of isocyanate groups, the oligomer being grafted with an unsaturated acrylic monomer having hydroxyl groups which could react with the isocyanate terminals, and the resulting dental material being curable by free radical initiation.

A dental composition comprising a polymerizable monomer (1), initiator, filler component(s) in an amount of more than about 20 wt.-%, wt.-% with respect to the whole weight of the composition, the polymerizable monomer (1) being characterized as follows: having exactly two (meth)acrylate reactive moieties, having an unsymmetrical backbone as linkage between the (meth)acrylate reactive moieties, the two (meth)acrylate reactive moieties being attached onto the unsymmetrical monomer backbone as alkyl esters, the unsymmetrical backbone comprising one aromatic moiety of the phenolic type, the polymerizable monomer (1) not containing an acidic moiety, other atoms than carbon, hydrogen, nitrogen, and oxygen, a bisphenol moiety. The invention is also directed to the use of the dental composition as or for producing a dental filling material, dental cement, crown and bridge material, inlay, onlay, veneer, orthodontic device or dental mill blank

A dental polymerizable composition according to the present invention includes a (meth)acrylic acid ester polymer (a), a polymerizable monomer (b) including a (meth)acrylic acid ester and/or a (meth)acrylamide, and a polymerization initiator (c). The (meth)acrylic acid ester polymer (a) includes a (meth)acrylic acid ester homopolymer having a glass transition temperature of 25° C. to 50° C. and/or a random copolymer of a (meth)acrylic acid ester whose homopolymer has a glass transition temperature higher than 37° C. and a (meth)acrylic acid ester whose homopolymer has a glass transition temperature lower than 37° C. The (meth)acrylic acid ester polymer (a) has a glass transition temperature of 25° C. to 50° C., has tan δ at 37° C. of 0.10 or more as determined by dynamic mechanical analysis, and has no melting point.

The invention relates to the technical field of a medical biomaterial, and particularly relates to an orthopedics or dental filling material. The invention provides an orthopedics or dental filling material, a dental implant and a degradable artificial bone, which aim at solving the defects that the existing dental filling material cannot promote fast restoration of tooth tissues, a bone filling material is insufficient for the inducibility of new bones and the bone forming process is slow. The filling material comprises a stent, and an active factor is attached to the stent; the stent comprises a stent body which is made of hydrogel materials, and hydroxyapatite is deposited on the stent body; and the concentration of the stent is 0.000001-100mg/cm<3>. The orthopedics or dental filling material has stronger capability of inducting the formation of new bones, as well as good bone defect repair capability, and strong capability of promoting the formation of tooth tissues.

The invention discloses a premixed magnesium phosphate-based dental filling material with stable suspension as well as a preparation method and application thereof. The dental filling material with excellent injectable property is prepared from magnesium oxide, at least one phosphate, as well as at least one non-aqueous phase solvent capable of being mixed and dissolved with the water and at leastone irradiation resistance material, wherein the magnesium oxide and the at least one phosphate are taken as main phases; the filling material further comprises at least one type of bioglass. The material maintains a liquid state under a sealing condition; after the material is padded into teeth and is in contact with physiological body fluid, the material is hydrated, solidified and hardened. The premixed magnesium phosphate-based dental filling material with stable suspension is prepared from a magnesium phosphate-based material due to the excellent biocompatibility and biological activityof the magnesium phosphate-based material; the premixed magnesium phosphate-based dental filling material serving as the filling material can be used in the fields of pulp capping, root canal therapy,dental restoration and the like.

The invention discloses a quick-solidification anti-collapse dental filling material, and belongs to the field of biomedical materials. The dental filling material comprises a solid phase component and a liquid phase component, wherein the solid phase comprises at least one of calcium silicate compound, a quick-solidification anti-collapse agent and an X-ray retardant; the liquid phase is an aqueous phase based on distilled water or deionized water. In the quick-solidification anti-collapse dental filling material, disodium hydrogen phosphate powder is used as a quick-solidification anti-collapse agent. The composite material not only has excellent anti-collapse performance, but also has short solidification time, can induce hydroxyapatite deposition, and forms close fit with the root canal wall. Compared with prior materials, the material of the invention has the characteristics of rapid solidification, excellent anti-collapse property, edge sealing property, biological activity and the like.

The invention relates to a dental composition comprising polymerizable monomer (1), initiator component(s), filler component(s) in an amount of more than about 20 wt.-%, wt.-% with respect to the whole weight of the composition, the polymerizable monomer (1) being characterized as follows: having exactly two (meth)acrylate reactive moieties, having an unsymmetrical backbone as linkage between the (meth)acrylate reactive moieties, the two (meth)acrylate reactive moieties being attached onto the unsymmetrical monomer backbone as alkyl esters, the unsymmetrical backbone comprising one aromatic moiety of the phenolic type, the polymerizable monomer (1) not containing an acidic moiety, other atoms than carbon, hydrogen, and oxygen, bisphenol moieties. The invention also relates to the use of the dental composition as or for producing a dental filling material, crown and bridge material, inlay, onlay, veneer or dental mill blank.