38 results about "Self etch" patented technology

The present invention is directed to dental compositions that can be used as adhesives for bonding a dental material to a dental structure surface and/or as a dental restorative material. The dental composition is preferably applied to a dental structure surface under conditions effective to etch the dental structure surface.

The present invention is directed to dental compositions that can be used as adhesives for bonding a dental material to a dental structure surface and/or as a dental restorative material. The dental composition is preferably applied to a dental structure surface under conditions effective to etch the dental structure surface.

A self-etching, priming dental adhesive composition comprises an olefinically unsaturated monomer having an -SO3 functionality; a copolymerizable multi-functional (meth)acrylate adhesive; and a curing system. The self-etching, priming dental adhesive may further comprise a copolymerizable adhesion promoter containing an acid functionality, the adhesion promoter being different from the olefinically unsaturated monomer having an -SO3 functionality and the copolymerizable multi-functional (meth)acrylate adhesive, and a solvent system in an amount effective to dissolve the adhesive and/or the adhesion promoter. The adhesive composition provides even further advantages over the art, as all etching, priming, and application of an adhesive can be performed in one step.

Dental resin cement materials having unique handling properties are provided that comprise a) filler, b) polymerizable resin, and c) a polymeric handling modifier that is dispersed in the polymerizable resin at 25° C. and that has a molecular weight of between about 500 and 100,000. Components a) b) and c) are present in an amount effective to achieve a Viscosity vs Shear Rate Curve that fits a power law model of F(x)=Ax^B. The correlation value of the material to this curve is greater than 0.85 for both the increasing and decreasing shear rate curves, and the value of B is less than about −0.01.

Resin cements are also provided that comprise acid functionality and water, but which do not comprise an acid reactive filler. Such cements may be self etching, thereby avoiding the need to carry out a separate acid etch step.

Two-part and one-part self-etching dental adhesives containing polymerizable acidic monomers. Methods include one-coat application without need for tooth etching.

The invention discloses a micro ultra-spectrum integrated optical filter and a manufacture method thereof. The invention takes melting quartz or glass, etc., as an optical base plate and is formed by the optical filters, each dimension of which is in a micron magnitude and with various optical characteristics on the base plate in two-dimensional arrangement. The ultra-spectrum integrated optical filter of the invention realizes the integration of the filters with various characteristics on the same base plate by being based on an optical film interference principle, alternately carrying out vacuum evaporation of high and low refractive index materials and the drying etching of a semiconductor and controlling the etching depth by using a self-etching stopping film. The invention utilizes the etching technique and self-stopping technology of a semiconductor technique for realizing an ultra-spectrum integrated optical filter with a single element smaller than 20 micron and independently designed optical characteristics. The invention has the advantages of simple manufacture technique and small size; can be combined with an optical imaging sensor to form a light, convenient and compact imaging spectrum apparatus with high distinguishing rate; and can be broadly used in atmosphere, ocean, space exploration and medicinal treatment diagnosing.

A self-etching, dental cement composition is provided having the advantage of not requiring a separate etching and bonding step.

Stable self-etching copolymerizable primer compositions including are provided including compounds having a polymerizable ethylenically unsaturated groups and acidic groups, and optionally comonomers and suitable solvents. Such compositions are used in conjunction with dental adhesives to provide one or multi-component dental systems capable of etching or decalcifying tooth dentin and enamel without the need for a separate rinse step. Methods of use of such compositions according to the present invention include application for priming and imparting enhanced adhesion between the primers, adhesives, and the tooth substrates such as dentin or cut or uncut enamel, and subsequently applied dental composites, restoratives or other dental components.

The invention discloses a method for preparing one-dimensional porous tin dioxide nano-tubes on an electric conduction substrate based on an in-situ self-etching template mechanism, and belongs to the field of inorganic chemistry and material synthesis. The method comprises: washing an electric conduction glass, preparing a ZnO precursor solution, growing a ZnO/electric conduction glass, preparing a SnO2 precursor solution, and growing SnO2 nano-tubes. According to the present invention, the method is characterized in that the two-step template method for preparing the SnO2 nano-tubes through the in-situ etching based on the self-produced alkaline environment without strong acid/alkali is achieved, the experimental steps are simplified, the product size is uniform, the cost is low, and the advantages of energy saving and environment protection are provided; and the method has the simple operation and provides the new idea for the large batch preparation of the SnO2 nano-tubes, and the prepared tin oxide has the large specific surface area and has wide application prospects in the fields of photocatalysis, solar cells, and the like.

This invention describes an adhesive used for bonding dental and medical biomaterials to hard tissues via a molecular bridge formed from calcium-reactive amines and acrylic or methacrylic ester monomers to hard tissues such as enamel, dentin, and bone. This formulation consists of an acid-stable polymerizable compound with multi-functional acrylate cross-linkers. This formula provides good self-adherence without prior preparation of the hard tissue substrates. The formulation can contain chemical- and/or light-activated free-radical initiators.

A self etching, dental cement composition is provided having the advantage of not requiring a separate etching and bonding step. The cement composition comprises a polymerizable (meth)acrylate trimellitic acid/anhydride, a phosphoric acid (meth)acrylate, a hydroxyalkyl(meth)acrylate, copolymerizable multi-functional (meth)acrylate monomers, a diluent, fillers, and a curing system. These cement compositions are prepared as a two-paste system that is combined prior to use.