26results about "Dental impression compositions" patented technology

It is an object of the present invention to provide a monomer which can provide a cured product having both high toughness and rigidity. The present invention is a (meth)acrylate (D) which is a reaction product of a thiol compound (A) having two or more mercapto groups; an iso(thio)cyanate compound (B) having two or more iso(thio)cyanato groups; and a hydroxy (meth)acrylate compound (C) having one or more polymerizable groups.

To provide a fit checking material composition for dental use which facilitates checking of a fitting state.SOLUTION: Provided is a fit checking material composition for dental use containing a first paste and a second paste, wherein the consistency at 23°C of the mixed product 35 seconds after mixing the first paste and the second paste is 37 to 43 mm.SELECTED DRAWING: None

The invention discloses an elastomer impression material as well as a preparation method and application thereof, and relates to the technical field of impression materials. The elastomer impression material comprises a primary impression and a light body, wherein the primary impression and the light body respectively comprise a polysiloxane compound, hydrogen-containing silicone oil, a catalyst, a filler, a pigment and a fluorescent pigment. The marking efficiency of the light body in the indicating process is improved through cooperation of the pigment and the fluorescent pigment, the marking face is mainly used for marking a large continuous face, the light body is mainly used for marking lines such as gingival lines, pit fissures and palate, the color between the light body and the initial impression and the color tone and effect of fluorescent light are combined, and the marking efficiency of the light body in the indicating process is improved. The positions of gingiva, soft tissue, prepared teeth and the like of the teeth and the transition and boundary of the structure are clearly and accurately marked, the machine learning process is accelerated, and the tedious link of manual marking is omitted. The preparation method is simple, convenient and rapid, the oral cavity diagnosis and treatment efficiency and precision are improved, and a more efficient and more accurate solution is provided for application of artificial intelligence in the dental field.

To provide a main material paste having excellent storage stability.SOLUTION: A main material paste is used in a dental alginate impression material, comprising alginate, water, and a C3-8 carboxylate having 0 or more and 3 or less hydroxy groups.SELECTED DRAWING: None

The invention provides a dental silicone rubber impression composition, a dental silicone rubber impression material kit and a preparation method and application of the dental silicone rubber impression composition and the dental silicone rubber impression material kit, D50 of reinforcing filler in the impression composition is 5-22 microns, and the particle size distribution of the reinforcing filler in the impression composition meets the conditions that D60-D40 is smaller than or equal to 12 m and D40-D20 is smaller than or equal to 12 m at the same time. The particle size distribution of the reinforcing filler in the impression material is controlled to be concentrated enough, so that the initial setting time of the silicone rubber impression material is controllable, and meanwhile, the silicone rubber impression material with relatively high overall strength is also obtained.

The invention belongs to the technical field of impression materials, and discloses a transparent silicone rubber material for dental impression as well as a preparation method and application of the transparent silicone rubber material. The transparent silicone rubber material is composed of a substrate material and a catalyst, the substrate material is prepared from the following components: vinyl terminated polydimethylsiloxane, polymethylphenyl siloxane oil, nano silicon dioxide, methyltriethoxysilane and polyether modified polysiloxane; the catalyst is prepared from the following components: hydrogen-containing silicone oil, platinum (0)-1, 3-diethylene-1, 1, 3, 3-tetramethyl disiloxane, 1-ethynyl-1-cyclohexanol and cerium oxide. The obtained transparent silicone rubber material has excellent transparency, the light transmittance is larger than 90%, the elasticity modulus can reach 1.41 MPa, the normal-temperature compression rate is as low as 1.81%, the curing time is moderate, the curing time is shortened to a certain degree while the clinical operation time is guaranteed, and the biological safety reaches the standard.

This invention provides a dental silicone rubber impression composition, a material kit, and a method for preparing the same. The impression composition includes a reinforcing filler with a nanometer-sized particle size, and the particle size distribution of the reinforcing filler satisfies D[4,3]-D[3,2]=A, where A is 0~200nm. The above-mentioned solution provided by this invention ensures that the dental silicone rubber impression material has lower roughness while maintaining its mechanical properties. It also avoids the agglomeration of reinforcing particles within the silicone rubber matrix, which could affect the overall flowability of the impression material, and improves processing difficulty. Furthermore, the impression material exhibits a faster curing speed.

One aspect of the present invention includes, in antibacterial polymer particles, a crosslinked copolymer having a structural unit derived from a monofunctional monomer having an antibacterial group, and a structural unit derived from a polyfunctional monomer. A water absorption capacity of the antibacterial polymer particles is 3 g / g or more.

The present invention relates to a radiation curable composition for use in an additive manufacturing process, the composition comprising a (meth) acrylate component A1 comprising a polyalkyleneoxy backbone, having at least two (meth) acrylate moieties, not comprising urethane moieties, and having a molecular weight Mw of at least 2,000 g / mol, the (meth) acrylate component A1 is present in an amount of 50 wt% to 85 wt%; a (meth) acrylate component A2 having at least two (meth) acrylate moieties, additionally comprising at least two urethane moieties, and having a molecular weight Mw of at most 1,000 g / mol, the (meth) acrylate component A2 being present in an amount of 5 wt% to 20 wt%; a (meth) acrylate component A3 having only one (meth) acrylate moiety and having a molecular weight of at most 500 g / mol, the (meth) acrylate component A3 being present in an amount of 5 wt% to 20 wt%; a photoinitiator; and optionally a stabilizer, wt% relative to the amount of the entire composition. The invention also relates to a method for producing an elastomeric three-dimensional article by processing the radiation curable composition, an elastomeric three-dimensional article obtainable by such a method.

The present invention is related to a curable composition for dental impression comprising: a curable base composition and a surfactant system comprising a first surfactant, which is at least one compound having formula (I) and a fluorotelomer having formula (II), which works synergistically with the fluorotelomer so as to permit the composition to surprisingly have a lower contact angle; these results are reached with relatively low concentrations of biodegradable surfactants.

A dental retraction and impression system providing self-retracting and impression taking of a prepared tooth in one step. Paired setting materials simultaneously retract gingiva, widen a sulcus around the tooth, and take an impression of the tooth and margins. A low viscosity setting gingival retracting impression material having an astringent and a high viscosity setting impression material set together. The high viscosity setting impression material is heavy body and has a higher viscosity than the low viscosity setting gingival retracting material so as to force the low viscosity setting gingival retracting impression material into the gingival space or sulcus.

The present invention relates to a hardenable composition for dental impressions comprising a hardenable base composition and a surfactant system comprising a first surfactant, which is at least one compound having formula (I), and a second surfactant, wherein the first surfactant acts synergistically with the second surfactant to enable the composition to have a surprisingly lower contact angle; these results are achieved with a relatively low concentration of biodegradable surfactant. [Formula 1] TIFF2023502479000042.tif60162

One aspect of the present invention includes, in antibacterial polymer particles, a crosslinked copolymer having a structural unit derived from a monofunctional monomer having an antibacterial group, and a structural unit derived from a polyfunctional monomer. A water absorption capacity of the antibacterial polymer particles is 3 g / g or more.

A dental alginate impression material according to one aspect of the present invention contains an alginate, calcium sulfate, and an aminocarboxylic acid.

The application belongs to the technical field of impression materials, and discloses a transparent silicone rubber material for dental impression, and a preparation method and application thereof.The transparent silicone rubber material comprises a base material and a catalyst; the base material comprises the following components: vinyl-terminated polydimethylsiloxane, phenylmethyl silicone oil, nano-silicon dioxide, methyl triethoxysilane and polyether modified polysiloxane; and the catalyst comprises the following components: hydrogen-containing silicone oil, platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane, 1-ethynyl-1-cyclohexanol and cerium oxide.The obtained transparent silicone rubber material has excellent transparency, the light transmittance of which is greater than 90%, the elastic modulus of which can reach 1.41 MPa, the compression rate at room temperature of which is as low as 1.81%, the curing time of which is moderate, the clinical operation time is ensured, the curing time is shortened to a certain extent, and the biological safety meets the standards.

One aspect of the present invention is a base paste for a dental additive silicone impression material, the base paste includes a polyether having a peak molecular weight of 1,000 or less, wherein at least one terminal end of the polyether is sealed with an alkenyl group.

This invention discloses an impression composition, an impression material, an impression, and a method for preparing the same, belonging to the field of photocuring technology. The impression composition comprises the following components in weight percentages: 10%-25% oligomer, 1%-5% acrylate monomer, 0.05%-1% photoinitiator, 0.5%-2% dispersant, and 62%-85% silica filler; wherein the oligomer includes polyurethane acrylate with a functionality of 3-9. The impression composition is prepared by uniformly mixing the above raw materials and further molded into a photocurable impression material. Before curing, this impression intermediate exhibits excellent flexural strength (i.e., tear resistance), detail reproduction, and storage stability. In use, the impression material can be directly cured using photocuring. The curing time is suitable and controllable, the degree of curing is high, and it exhibits good dimensional stability during curing. The prepared impression has high hardness.

A base paste used in a dental alginate impression material contains an alginate, water, and a carboxylate containing 0 or more and 3 or less hydroxy groups and 3 or more and 8 or less carbon atoms.

This invention relates to the field of polymer materials technology, and more particularly to an antibacterial photocurable resin composition, its preparation method, and its application. The antibacterial photocurable resin composition provided by this invention comprises the following raw materials in parts by weight: 35-65 parts of polyurethane copolymer, 30-60 parts of reactive diluent monomer, 0.1-2.0 parts of AIE functional polymer, and 1-6 parts of photoinitiator; the AIE functional polymer contains polymerizable groups; the raw materials for preparing the polyurethane copolymer include isocyanate and diol, the diol including cashew nut glycol, with cashew nut glycol accounting for 20-80% of the molar percentage of the diol. The antibacterial photocurable resin composition provided by this invention possesses both excellent mechanical properties and high curing efficiency, and has a long-lasting, safe, and highly efficient phototriggered endogenous antibacterial function.

The present describes a curable composition for dental impression comprising: a curable base composition and a surfactant system comprising a first surfactant, which is at least one compound having the formula (I) and a second surfactant, which works synergistically with the second surfactant so as to permit the composition to surprisingly have a lower contact angle; these results are reached with relatively low concentrations of biodegradable surfactants.

The present invention relates to a dental addition silicone impression material containing: an organopolysiloxane; and a nonionic surfactant, wherein the organopolysiloxane contains M units represented by the formula: R3SiO1 / 2, in which R is a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted aryl group, a substituted or an unsubstituted aralkyl group, a substituted or an unsubstituted alkoxy group or hydroxy group, and three R's are identical or different, and Q units represented by the chemical formula: SiO2.

The present invention provides a silicone composition for dental impression materials that can extend the storage stability of dental impression materials. [Solution] This disclosure generally relates to a curable one-component silicone composition. The curable one-component silicone composition comprises an organic polysiloxane compound having at least two unsaturated groups, an organic hydrogen polysiloxane compound having at least two Si-H groups, a catalyst that enables the addition of silicon-bonded hydrogen atoms to the unsaturated groups, and at least one surface-treated particulate filler. The curable one-component silicone composition is useful as a dental impression material. More specifically, the curable one-component silicone composition comprising the surface-treated filler extends the storage stability of the dental impression material. This disclosure also provides a method for preparing such a curable one-component silicone composition.