48 results about "Dental use" patented technology

The present invention provides a zirconia composite sintered body which has suitable strength for dental use, which has excellent mechanical workability in a sintered body state, and which has excellent aesthetic properties. The present invention relates to a zirconia composite sintered body comprising: zirconia; a stabilizer which is capable of suppressing a phase transition of the zirconia; and Nb2O5 and / or Ta2O5, said zirconia composite sintered body comprising a plurality of layers which differ in terms of the content of at least one component from among the stabilizer, the Nb2O5, and the Ta2O5, with respect to the total amount, in moles, of the zirconia, the stabilizer, the Nb2O5 and the Ta2O5.

The invention provides a rapid sintering method of zirconia ceramic for dentistry and zirconia ceramic, the rapid sintering method of zirconia ceramic for dentistry comprises the following steps: obtaining a pre-sintered body prepared from zirconia powder with stable yttrium oxide, and obtaining a standard active sintering temperature of the zirconia powder; the pre-sintered body is subjected to final sintering in a preset final sintering stage, the zirconia ceramic is obtained, the preset highest sintering temperature in the preset final sintering stage is higher than the standard active sintering temperature, and the difference value between the preset highest sintering temperature and the standard active sintering temperature ranges from 10 DEG C to 60 DEG C. According to the embodiment of the invention, the preset highest sintering temperature in the preset final sintering stage is set to exceed the standard active sintering temperature by 10-60 DEG C, so that the highest sintering temperature of the final sintering process is improved, the final sintering time of the zirconia ceramic is shortened, the production efficiency of the zirconia ceramic product is improved, and the production cost is reduced. And meanwhile, the material can obtain excellent mechanical properties and transparency within an extremely short time.

The invention prescribes a dental tooth elevator for dental use, one embodiment of which exhibits a doubled bladed instrument formed by a U-shaped notch which resists bending for extracted teeth and gum line when embedded to expand and loosen teeth between tooth and bone both mesio-distal (backward) and bucco-lingual (side-to-side) as said elevator is twisted by operator increasing tooth movement while, unlike traditional straight elevators, the flat tipped doubled blades further resists slippage during tooth extraction.

1. The name of the design product: dental bone powder conveyor. 2. The use of the design product: bone powder conveyor for dental use. 3. The design features of the design product: in shape. 4. The picture or photo that best shows the design features: perspective view.

The present invention provides a pre-sintered body of oxide ceramics that possesses excellent polishability and exhibits aesthetics due to high evenness on both the polished surface of the pre-sintered body and the surface of the sintered body after sintering. The invention also provides a method for producing such oxide ceramic pre-sintered bodies. The present invention relates to an oxide ceramic pre-sintered body for dental use comprising oxide ceramic particles with an average roundness of primary particles of 0.81 or more and having a relative density of 43 to 63%.

This invention refers to long-lasting antibacterial compositions with a broad spectrum of activity, including bactericidal, bacteriostatic, virucidal, virustatic, germicidal, algicidal, fungicidal, and fungistatic activities. These compositions can be used for the production of topical formulations or for environmental treatment, surface disinfection, or dental use. The composition can be in the form of a solution, a moist gel, xerogel, aerosol, spray, polymeric system, or solid state. Specifically, the invention refers to compositions, such as aqueous or alcoholic solutions, or even in gel or powder form, with antibacterial activity. These compositions contain a cationic active (chlorhexidine digluconate, quaternary ammonium, or cetil pyridine) nanoencapsulated in cyclodextrin (alpha-cyclodextrin, beta-cyclodextrin, gamma-cyclodextrin, hydroxymethyl beta-cyclodextrin, or hydroxypropyl beta-cyclodextrin), which may optionally include alkyl or aryl group insertions, at a molar ratio of 1:1 to 1:4. These compositions also include anionic excipients, as well as humectants, stabilizers, sequestering agents, surfactants, preservatives, or thickeners. Preferably, they include the anionic surfactant sodium lauryl sulfate or the anionic thickener carbomer.

1. Name of the product in this design: Ultrasonic air-blasting periodontal treatment device with graphical user interface. 2. Purpose of this design: For dental use in removing tartar and plaque from the surface of teeth, especially irritants such as tartar and plaque located below the gum line. 3. The key design features of this product are its shape, pattern, color, and the graphical user interface and displayed content on the screen. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The design for which protection is sought includes color. 6. Purpose of the graphical user interface: to select cleaning modes, set different parameters, and display equipment operating status information.

1. The name of the design product: mouth opener (for dental use). 2. The use of the design product: the design product is used for dental mouth opener. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

1. Name of the design product: automatic positive pressure film press for dental use. 2. Use of the design product: for making dental film. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: perspective view 2.

The present invention provides a self-adhesive dental composite resin that can achieve both favorable cavity sealing properties and good shade conformity when used for cavities in wedge-shaped defects. The present invention relates to a self-adhesive dental composite resin comprising a monomer (a) having an acidic group, a monomer (b) having no acidic group, a polymerization initiator (c), and a filler (d),wherein the self-adhesive dental composite resin has a polymerization shrinkage stress of less than 10.0 MPa, and the degree of light diffusion D as indicated by the following formula [I] for the self-adhesive dental composite resin after curing is 0.10 or more and less than 3.00,D=(I20 / cos⁢20⁢°+I70 / cos⁢70⁢°) / (2⁢I0).[I](Description of the symbols in the formula is omitted.)

A weighted blanket having a weighted insert positioned between two outer layers with said weighted insert having a plurality of sealed pockets.

The present invention provides a paste-form two-pack type dental curable composition having an adequate working time range and superior bond strength to dentin, in addition to showing small variation in working time, small decline in bond strength to dentin, and low risk of paste solidification over extended storage. The present invention relates to a paste-form two-pack type dental curable composition comprising: a first agent that comprises an acidic group-containing polymerizable monomer (A), an acidic group-free polymerizable monomer (B), an organic peroxide (C), a nitrogen atom-containing ligand (D), and a filler (E); and a second agent that comprises an acidic group-free polymerizable monomer (B), a thiourea compound (F), and a filler (E).

The utility model belongs to dental instrument field, concretely is a kind of biological ceramic material conveyor for dentistry. Biological ceramic material conveyor for dentistry, including vertical presser body, the one side of vertical presser body is connected with the curved metal pipeline, for conveying dental material by metal pipeline;Vertical presser body near metal pipeline side is equipped with handle, handle can slide in groove and pass through guide wire and specify the location of dental material. Vertical presser body other side is equipped with pressurizing needle, for pressurizing and extruding dental material bubble or interstice. Guide wire is connected to handle, and the diameter of both ends of guide wire is greater than the middle section. The utility model integrates the integrated instrument of conveying and vertical pressurizing function, can realize the accurate conveying and dense tamping of material without changing tool.

1. Name of the design product: 3D printer. 2. Use of the design product: 3D printer for dental use. 3. Design key points of the design product: lies in the shape. 4. Picture or photo that best shows the design key points: Perspective view 1.

The invention belongs to the technical field of medicine, and particularly relates to a material disinfection device, in particular to a dental sterilization system and a working method thereof.The dental sterilization system selects a corresponding cleaning mode through a control module according to the type of an appliance needing to be cleaned; according to the cleaning mode, the sterilization bin, the first electromagnetic valve, the high-pressure steam tank, the second electromagnetic valve, the third electromagnetic valve, the sewage pump, the steam generation device, the water inlet pump, the fourth electromagnetic valve and the vacuum pump are controlled to work, cleaning of the appliances is completed, then complete cleaning of the appliances is achieved, and the sterilization and disinfection effect is ensured.

1. The name of the design product: head-mounted spotlight (for dental use). 2. The use of the design product: head-mounted spotlight for dental use. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

1. The name of the design product: disposable saliva suction tube (for stomatology). 2. The use of the design product: the disposable saliva suction tube for oral treatment. 3. The design points of the design product: the shape of the product. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention relates to an abrasive blank and a dental prosthesis, and a method for preparing the same. The invention provides a grinding blank with a multi-layer structure and excellent aesthetics and a preparation method thereof. The present invention pertains to a dental polishing blank having a polishing blank part having a laminated structure of two or more layers, in which a main body layer (3) is present on the inside of an enamel layer (1), the main body layer (3) has a bottom surface and a side surface, and the side surface has a shape having a portion perpendicular to the bottom surface.

The utility model discloses a hydrophobic and breathable rubber barrier for oral medicine, and belongs to the technical field of oral medical assistance. In order to solve the problem that a user cannot breathe smoothly due to the airtight characteristic of a rubber barrier, the rubber barrier comprises a rubber barrier perforated plate and rubber barrier cloth, the rubber barrier cloth comprises at least one hydrophobic breathable area, the hydrophobic breathable area is made of an elastic synthetic fiber material, a latex material structure is arranged on the periphery of the hydrophobic breathable area, and the latex material structure corresponds to the position of a punching point area of the rubber barrier punching plate; the hydrophobic breathable area and the latex material structure are fixed through a binder; and the elastic modulus of the elastic synthetic fiber material is lower than that of the latex material. The oral cavity treatment device is used for oral cavity treatment.

A sanitizing device (1) for sanitizing cannulae (4) for dental use has a container (2); a hopper (7) configured to house a plurality of cannulae (4) arranged in an orderly manner; a dispensing port (6) for releasing one sanitized cannula (4) at a time; a conveyor (8) arranged within the container (2) and configured to advance cannulae (4) in an orderly succession along a path (P) between the hopper (7) and the dispensing port (6); and an emitter (9) of ultraviolet radiation arranged along the conveyor (8) to invest the cannulae (4) arranged along at least a section of the path (P) with ultraviolet radiation.

The disclosure is directed to compositions and methods related to colorimetric detection for dental uses (e.g., detecting the presence or absence of a dental caries, and / or cavity or cavities, or precursor thereof), including a rapid unambiguous color indicator that allows for visualization by an unassisted eye based on a localized oral pH reading.

Design 1 and 2 concern a flexible saliva suction cannula and a nozzle for a saliva suction cannula for dental use, respectively, featuring holes that create a practical application of the Venturi effect and a regular and continuous suction flow of the salivary fluid through the section of the cannula and allow to completely avoid any possible damage to the patient's soft tissue; the products have bodies with holes made on a cylindrical or truncated conical section that can be made of any known plastic or metallic material and in any possible color; the cannula shown in 2.1 is disclaimed.

Provided is a dental cutting blank having a part to be cut, the part to be cut being formed from a mixed resin that contains spherical particles of a silica-based composite oxide and has an appearance color that does not easily change with thickness. When a starting material solution in which a condensable compound such as tetraethyl silicate or tetra (n-butoxy) zirconate is dissolved is added to an alkaline solution to precipitate silica-based composite oxide particles of a silica-based composite oxide, a radical polymerizable monomer is used in an amount of 100 parts by mass per 100 parts by mass, and the content of the radical polymerizable monomer is 100 parts by mass per 100 parts by mass per 100 parts by mass per 100 parts by mass per 100 parts by mass per 100 parts by mass per 100 parts by mass. A cured product of a dental curable composition containing 100-800 parts by mass of silica-based composite oxide particles having an average primary particle diameter of 350-600 nm is used as a portion to be cut. The silica-based composite oxide particles are composed of spherical particles of a silica-based composite oxide, which are spherical particles having a silica content of 80-92 mol% and having no silica core, and which are obtained by controlling the solvent composition of each of the solutions.

The present invention provides a zirconia pre-sintered body that exhibits suitable shade, translucency, and strength with short firing. The present invention relates to a zirconia pre-sintered body comprising a multilayer structure including at least three layers containing zirconia and a stabilizer capable of reducing a phase transformation of zirconia, the zirconia comprising predominantly monoclinic crystal system, the multilayer structure including at least two layers that differ from one another in the content of the stabilizer relative to the total mole of the zirconia and the stabilizer, the multilayer structure including at least two layers having substantially the same stabilizer content relative to the total mole of the zirconia and the stabilizer, the zirconia pre-sintered body containing a color component in all of the layers having substantially the same stabilizer content, and the layers having substantially the same stabilizer content differing from one another in the composition of the color component.

The present invention provides a zirconia composite sintered body that exhibits excellent machinability while possessing strength and translucency suited for dental use. The present invention relates to a zirconia composite sintered body comprising ZrO2, HfO2, a stabilizer capable of preventing a phase transformation of zirconia, and Nb2O5 and / or Ta2O5, wherein the total content of ZrO2 and HfO2 is 78 to 97.5 mol %, the content of the stabilizer is 1 to 12 mol %, and the total content of Nb2O5 and Ta2O5 is 1 to 9 mol % in total 100 mol % of ZrO2, HfO2, the stabilizer, Nb2O5, and Ta2O5, and the zirconia composite sintered body further comprises a Group I element, and TiO2.

The invention discloses a dental zirconia ceramic restoration preparation method, and relates to the technical field of ceramic restoration, and the dental zirconia ceramic restoration preparation method specifically comprises the following preparation steps: 1, sequentially adding yttrium nitrate and an aqueous solution of zinc nitrate hexahydrate and zinc nitrate into a 0.5 mol / L zirconium oxychloride octahydrate solution, stirring and uniformly mixing, slowly dropwise adding ammonia water, and stirring for 30-60 minutes; and adjusting the pH value of the solution system to 9.6-10.2, standing and precipitating at room temperature for 12-16 hours, washing the precipitate with absolute ethyl alcohol and deionized water for 3-5 times, drying in a drying oven at 90-110 DEG C, and calcining at 690-710 DEG C for 1.8-2 hours to obtain the zirconium oxide composite powder. According to the preparation method of the dental zirconia ceramic restoration, yttrium ions and zinc ions are subjected to solid solution in zirconia crystal lattices to generate a solid solution strengthening effect, so that the restoration is endowed with antibacterial performance and acid corrosion resistance, and meanwhile, the strength of the restoration is improved.

The present invention provides a zirconia composite sintered body that exhibits excellent machinability while possessing strength and translucency suited for dental use. The present invention relates to a zirconia composite sintered body comprising ZrO2, HfO2, a stabilizer capable of preventing a phase transformation of zirconia, and Nb2O5 and / or Ta2O5, wherein the total content of ZrO2 and HfO2 is 78 to 97.5 mol %, the content of the stabilizer is 1 to 12 mol %, and the total content of Nb2O5 and Ta2O5 is 1 to 9 mol % in total 100 mol % of ZrO2, HfO2, the stabilizer, Nb2O5, and Ta2O5, and the zirconia composite sintered body further comprises a Group I element.

The invention provides a dental self-adhesive resin composition and a preparation method and application thereof, the dental self-adhesive resin composition comprises a matrix component and a catalyst component, the matrix component comprises a polymerizable monomer A without an acidic group, a polymerizable monomer containing an acidic group, a photoinitiator, a reducing agent, a flow regulator and a filler A, the catalyst component comprises a polymerizable monomer B which does not contain an acidic group, an oxidizing agent and a filler B; by adding the flow regulator into the matrix component, the obtained self-adhesive resin composition has low viscosity and good fluidity, further has high wettability on the surface of tooth tissue, and can fully penetrate into hard tissue of teeth to improve combination with dentin and enamel, so that the bonding strength is improved, and the service life of the self-adhesive resin composition is prolonged. Meanwhile, the high flexural strength can be kept, and the adhesive is very suitable for being used as a dental adhesive.

The present invention pertains to a method for treating the surface of 1-5 mol % (preferably, 3 mol %) yttria stabilized zirconia (1-5 mol % (3 mol %) yttria stabilized tetragonal zirconia polycrystal; 3Y-TZP), which is suitable for dental use, with plasma composed of nitrogen and argon mixed gas (N2 / Ar). 3Y-TZP treated by the method has excellent antibacterial properties, osseointegration ability, and adhesive performance, and thus has the advantage of being applicable to dental implants etc.