32 results about "Fissure sealant" patented technology

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.

A low swell, long-lived hydrogel sealant formed by reacting a highly oxidized polysaccharide containing aldehyde groups with a multi-arm amine is described. The hydrogel sealant may be particularly suitable for applications requiring low swell and slow degradation, for example, ophthalmic applications such as sealing wounds resulting from trauma such as corneal lacerations, or from surgical procedures such as vitrectomy procedures, cataract surgery, LASIK surgery, glaucoma surgery, and corneal transplants; neurosurgery applications, such as sealing the dura; and as a plug to seal a fistula or the punctum. The low swell, long-lived hydrogel sealant may also be useful as a tissue sealant and adhesive, and as an anti-adhesion barrier.

A meltable crack sealant package that includes a polymeric container and a crack sealant material contained therein. The polymeric container includes a bottom portion including a rigid base and an upwardly extending rigid sidewall that terminates in and define an opening. The rigid base and upwardly extending rigid sidewall cooperate to define a reservoir. A rigid lid portion operatively engages with the bottom portion to close off the opening and thereby seal the crack sealant material within the reservoir in a watertight manner. Methods of making and using the meltable crack sealant package are also disclosed.

A liquid composition, active curing additive for water or solvent borne surface coatings and sealants such: latex products, paints, putties, caulks, sports track and court construction, asphalt or coal tar seal coating, asphalt paving, micro-seal, roof tars, asphalt emulsions, crack sealants, and the like is provided. The additive functions to significantly reduce the amount of time required for the surface coating to cure and thereby allows the coated or sealed surface to be quickly returned to service. Preferably, the additive is composed of a composition of fly ash, hydrous ammonia, water or solvent, and bentonite. This formulation, when added to a liquid surface sealant or coating, will create an active process within the film of the said sealant or coating which draws water out of the film extremely fast, thereby reducing the amount of time required for the surface coating or sealant to cure.

The invention discloses preparation methods for fluorine-containing alpha-calcium sulfate hemihydrate powder and a fluorine-containing calcium sulfate artificial bone material, and belongs to the field of medical biological materials. The preparation method for the fluorine-containing alpha-calcium sulfate hemihydrate powder is as follows: adding a fluorinating agent in a process of adding calcium sulfate dihydrate into mixed reaction liquor of calcium chloride aqueous liquor and absolute ethyl alcohol for partly removing crystalline water to prepare alpha-calcium sulfate hemihydrate, so that fluoride ions partly substitute ions in calcium sulfate hemihydrate to prepare the fluorine-containing alpha-calcium sulfate hemihydrate powder. The fluoride ions change crystal structure of calcium sulfate hemihydrate, so that the crystalline grain feature of the fluorine-containing alpha-calcium sulfate hemihydrate powder is obviously changed to an equiaxial hexagonal prism shape from a slender prism shape. The material has good degradation property and biocompatibility, and therefore, the prepared fluorine-containing alpha-calcium sulfate hemihydrate artificial bone material can be applied to the medical repair field, for example, can be used as dental materials such as a dental cementation material, dental filler, a pit and fissure sealant, and the like, and can be used as a root canal product, and the like.

The invention relates to a pit and fissure sealant for dental department. The pit and fissure sealant comprises the following two compositions in percentage by weight: 5%-30% of superfine structured packing with an average particle size of 0.05-0.4mu m, and 95%-70% of polymerizable acrylate monomer containing a photo-initiating system, wherein the superfine structured packing is superfine silica structured powder packing which is treated by fluoride. The pit and fissure sealant for dental department is high in hardness, good in wear resistance, high in compressive strength and bending strength, and low in manufacturing cost. The superfine silica structured powder packing which is treated by fluoride can continuously release fluorine ions.

The invention provides a pit and fissure sealant based on a dental surface hydrophobization concept. The pit and fissure sealant is composed of a single-component pit and fissure sealant and a two-component pit and fissure sealant and further comprises the necessary composition components of a hydrophobic reagent, a solvent, hydrophobic polymeric monomers, a photopolymerization initiator and packing. According to the pit and fissure sealant, the problems that a pit and fissure sealant is poor in sealing property and prone to disengagement are solved. Compared with a traditional pit and fissure sealant, hydrophobic modification is conducted on a dental surface in the pit and fissure sealing process, the hydrophily of the dental surface is changed, and the dental surface is changed from hydrophily to hydrophobicity; the pit and fissure sealant has the advantages that infiltration of the pit and fissure sealant to the dental surface is enhanced, a uniform and stable tooth-pit and fissure sealant interface is formed finally, the sealing property and durability of pit and fissure sealing are improved, and the interface leakage rate is decreased.