43 results about "Bioceramic" patented technology

The application discloses a kind of based on photosensitive bioceramics deciduous tooth additive manufacturing forming process, it is related to ceramic deciduous tooth manufacturing technical field, comprising the following steps: using oral scanner to collect children's dental three-dimensional data, generate deciduous tooth restoration three-dimensional data model and export STL format deciduous tooth repair model;Using photosensitive liquid bioceramic composite material, through DLP photocuring 3D printing into initial blank, again through blue light three-stage resolidification and get blank body.In the process, the morphological characteristics of adjacent healthy deciduous teeth can be accurately extracted, and the crown height correction coefficient is automatically matched according to the age of the child, effectively compensating for the size deviation of the unerupted deciduous teeth, ensuring that the size error of the restoration is small, adjusting the occlusal surface morphology of the restoration according to the actual data of the teeth at the same time, making the occlusal contact area ratio higher, and reserving occlusal buffer space to avoid excessive local stress, significantly improving the mastication comfort and durability of the restoration.

The application discloses a 3D printing ocular prosthesis platform, which is prepared through the following steps: S1, designing the shape of the ocular prosthesis platform and dividing the shape into regions; S2, selecting a porous structure for the ocular prosthesis platform in each region and determining the voxel size according to the connecting point parameters of the selected porous structure; S3, voxelizing and fitting each region to form a voxelized interface; S4, filling the porous structure selected in step S2 into each corresponding region to complete the modeling of the porous structure in each region; S5, connecting the connecting points on adjacent voxelized interfaces to each other and converting the connecting lines into solid rod models to complete the modeling of the interfaces; S6, merging the models obtained in steps S4 and S5 to obtain a final model of the ocular prosthesis platform; S7, 3D printing to obtain a bioceramic blank; and S8, high-temperature sintering of the blank to obtain a 3D printed ocular prosthesis platform after porcelain forming. The application can obtain a new 3D printed ocular prosthesis platform, which provides technical support for ocular prosthesis repair.

The invention discloses selective laser melting biological ceramic powder for dental restoration and a preparation method thereof, and belongs to the technical field of dental restoration materials. The composite ceramic material comprises the following raw materials in parts by weight: 50-100 parts of composite ceramic powder and 0.1-2 parts of an absorbent, the composite ceramic powder comprises at least two of Al2O3, ZrO2, SiO2 and TiO2; the absorbent comprises any one of TiC, SiC, ZrC, TiN and graphite; the fluidity of the selective laser melting biological ceramic powder for dental restoration is 39-40 s / 50 g. According to the invention, the SLM process adaptability of the material is obviously improved, the inherent biocompatibility, mechanical strength and stability of biological ceramics are considered, and the technical barrier that traditional biological ceramic powder is difficult to be directly used for selective laser melting is overcome; and a feasible material solution is provided for direct additive manufacturing of personalized dental prostheses with high performance and complex structures.

This invention provides a bioceramic liner for total hip replacement surgery, belonging to the fields of medical clinical and biomaterials technology. It includes a shaft with a transmission sleeve sleeved on its outer side, and a limiting sleeve sleeve sleeved on the outer side of the transmission sleeve sleeve; and a fixing component for fixing the ceramic liner and assisting in press-fitting the ceramic liner. The fixing component is connected to both the transmission sleeve sleeve and the limiting sleeve sleeve. This invention, by setting a ceramic liner and progressively spraying a titanium layer, a coarse titanium layer, and a hydroxyapatite coating onto the acetabular surface of the ceramic liner, ultimately forms a sandwich structure on the acetabular surface of the ceramic liner. During surgery, it directly presses against the acetabulum, achieving osseointegration. This eliminates the need for an acetabular cup prosthesis, to some extent solving the problems of incorrect assembly of the acetabular cup and ceramic liner caused by existing technologies, as well as deformation during press-fitting of the metal acetabular cup, which leads to increased incidence of ceramic liner breakage and abnormal noise.

This invention provides an alumina ceramic, its preparation method, and its applications. The alumina ceramic, by mass parts, comprises: an alumina self-stabilizing system and a zirconium oxide self-stabilizing system; the alumina self-stabilizing system comprises 70-90 parts alumina and 1-2 parts stearic acid, and the zirconium oxide self-stabilizing system comprises 10-30 parts yttrium-stabilized nano-zirconia, 1-2 parts stearic acid, and 1-2 parts polyvinyl alcohol; wherein the median particle size of the alumina is 0.1 μm-0.25 μm, and the median particle size of the yttrium-stabilized nano-zirconia is 10 nm-50 nm. Through rational formulation of the components, selecting alumina and yttrium-stabilized nano-zirconia of specific particle sizes, and combining them with other raw materials, the resulting alumina ceramic exhibits high density, hardness, and fracture toughness, making it particularly suitable for preparing medical devices, bioceramics, or semiconductor device packaging components.

A micro-magnetic invisible orthodontic appliance is provided. The micro-magnetic invisible orthodontic appliance includes a bottom brace (1), an outer periodontal brace (2) and an inner periodontal brace (3). The bottom brace (1), the outer periodontal brace (2) and the inner periodontal brace (3) together form a U-shaped brace. A tooth receiving groove is defined between the outer periodontal brace (2) and the inner periodontal brace (3). The bottom brace (1), the outer periodontal brace (2) and the inner periodontal brace (3) are made from one of a polymer composite material, biological ceramic, and an interpenetrating polymer network material, dispersed with permanent magnetic neodymium-iron-boron powder, by one-piece molding or three-dimensional printing.

A system and method for increasing total dissolved solids (TDS) concentration and pH of water is provided herein. The water is processed using a variety of filtration and purification methods, including carbon filtration, water softening, reverse osmosis, and electrodeionization. After filtration and purification, the water is pumped into a mineral infusion chamber, including a plurality of bioceramic components. At least one TDS sensor monitors the TDS concentration of the water stream, and a flow rate out of the mineral infusion chamber is controlled by a flow control valve based on sensor data produced by the at least one TDS sensor.

The utility model discloses a filling device convenient for shaping a biological ceramic repair material. The device comprises a filler handle part, a filling rod and a filler head part, the filling rod is movably arranged in the filler handle part to form a filler body; the filler head part is connected with the filler handle part through the connecting part; a containing groove and a shaping opening are formed in the filler head, the containing groove is used for adding materials such as I Root-BP and MTA, and the shaping opening is used for shaping and filling the materials.

This invention relates to the field of bioceramic materials technology, specifically to a porous interconnected zirconia bone repair scaffold material and its preparation method. This invention aims to address the problems of poor mechanical properties and fragile interconnected structures in existing scaffolds under high porosity. The core preparation process includes: using a dual-size microsphere template, pre-fusion via acetone vapor annealing to form a stable interconnected window prototype; subsequently, constructing a continuous pore wall body by vacuum impregnation with high-viscosity zirconia slurry; then, using low-viscosity nano-zirconia sol for secondary positioning and reinforcement of the interconnected necks; finally, introducing diluted bioactive glass sol to impart surface bioactivity, followed by temperature-controlled degreasing and sintering to obtain the final product. This method, through template pre-fusion and a zoned sequential process, synergistically optimizes the scaffold's pore connectivity, mechanical strength, and bioactivity, making it suitable for the repair of weight-bearing bone defects.

Systems and methods for additive-manufactured biocompatible implants. Many embodiments are directed to 30-printed biocompatible resins for fabricating custom implants. In several embodiments, the biocompatible resin is based on a ratio of biocompatible polymers. The biocompatible resin, in accordance with various embodiments, incorporates an antibacterial and / or antimicrobial agent, In some embodiments, the biocompatible resin incorporates a bioceramic to mimic native tissue.

Systems and methods for additive-manufactured biocompatible implants. Many embodiments are directed to 30-printed biocompatible resins for fabricating custom implants. In several embodiments, the biocompatible resin is based on a ratio of biocompatible polymers. The biocompatible resin, in accordance with various embodiments, incorporates an antibacterial and / or antimicrobial agent, In some embodiments, the biocompatible resin incorporates a bioceramic to mimic native tissue.

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.

This invention provides a method for preparing gradient HA / ZrO2 bioceramics and the bioceramics themselves, relating to the field of ceramic material preparation technology. The method includes: conducting sintering experiments with different solid contents and different combinations of HA and ZrO2 component ratios to obtain sintering shrinkage data and establishing a sintering shrinkage control model; determining the component ratio of each layer of the ceramic gradient structure according to biomechanical requirements; performing reverse design of the gradient structure based on the component ratio of each layer of the ceramic gradient structure using the sintering shrinkage control model to obtain the required solid content for each layer of the ceramic gradient structure; and preparing HA / ZrO2 composite ceramic slurries with different solid contents according to the required solid content for each layer of the ceramic gradient structure to prepare gradient HA / ZrO2 bioceramics. This invention enables the ZrO2-rich layer and the HA-rich layer to achieve equal shrinkage during co-sintering, fundamentally eliminating interlayer stress and preventing cracking and warping.

The invention belongs to the technical field of preparation of bone repair biological materials, and particularly relates to a preparation method of large-size composite bone repair particles, which comprises the following steps: S1, proportionally mixing polymer powder, inorganic biological ceramic powder and a binder; s2, adding the mixed material obtained in the step S1 into rotary granulation equipment; s3, obtaining wet composite particles by using rotary granulation equipment; s4, curing the composite particles prepared in the step S3 at a high temperature for a period of time; and S5, screening the cured particles prepared in the step S4 to obtain the composite particles with the required size. The preparation method comprises the following steps: preparing wet particles from polymer powder and inorganic biological ceramic powder by using a binder, carrying out high-temperature treatment, and finally screening to obtain large-size organic / inorganic composite particles; compared with the prior art, the method has the advantages that the obtained particles are large in size and low in brittleness, the inorganic proportion can reach a high level, and the method is stable and controllable, can be effectively applied to bone filling and repairing, and has a good application prospect.

An obturation apparatus for prepared root canals incorporates the functionality of an endodontic spreader but with a circular disk located at a fixed distance from a distal tip of the apparatus and regulates the length of bioceramic putty inserted into the prepared root canal. The instrument comes in various sizes to cater to prepared root canals of differing dimensions such that the apparatus must be prefit before the application of the bioceramic putty to the apparatus tip before extending the bioceramic putty to the distal side of the circular disk. The apparatus is then inserted to a desired depth with application of apical pressure leaving the bioceramic putty in place as an apical plug when the apparatus is removed.

The invention relates to the field of biomedical materials, and discloses a preparation method of a calcium-phosphorus-based biological ceramic artificial bone, which comprises the following steps: firstly, constructing a Ca-P core-shell precursor containing a Zn < + > enriched core and a Sr < + > enriched shell, and carrying out directional diffusion induction treatment through short-time microwave pulse or thermal pulse to activate core-shell interface ion migration without causing complete crystallization; the beta-TCP powder obtained through freeze drying and segmented calcination is uniform in doped element distribution. And then composite printing slurry containing PVA and MC and added with sodium alginate and nano-clay is adopted, so that the slurry is quickly crosslinked and cured under ultraviolet light, and the extrusion stability and interlayer bonding strength are remarkably improved. And finally, carrying out microwave-assisted sintering to obtain the ceramic scaffold with high density, high mechanical property and good biological activity. According to the method, uniform synergistic doping of Zn < + > / Sr < + > is achieved, the mechanical strength, printing precision and osteogenesis promotion and antibacterial performance of the stent are improved, and the method is suitable for preparing the high-performance bone regeneration stent.

This invention relates to a zirconia-based bioceramic material based on high-entropy design and its preparation method, wherein the chemical composition of the bioceramic material is Zr. 1‑x (Y 1‑6y Al 2y Mg y Si y Sr 0.5y Ca 0.5y Ti y ) x O 2‑x / 2 Where x and y are molar contents, 0.025

The present application relates to the technical field of biological ceramic powder preparation equipment, and discloses a mass transfer enhancement control device for calcining biological ceramic powder by a gas furnace, which comprises a furnace body, a sealed muffle furnace canister, a zoned gas supply system, a porous sagger assembly and an exhaust system. The sealed muffle furnace canister is arranged in the furnace body and forms a combustion chamber with the furnace body, and the outlet end of the zoned gas supply system is provided with a porous gas distributor. The porous sagger assembly comprises a plurality of saggars stacked in an upper and lower manner, and an air flow gap is formed between adjacent saggars. The sagger bottom plate is provided with a bottom plate air permeation hole, the inner bottom surface of the sagger is provided with a porous fiber mat layer, and a powder layer is carried on the porous fiber mat layer. The porous gas distributor outputs uniformly distributed protective gas above the powder layer, and the air flow gap, the bottom plate air permeation hole and the porous fiber mat layer cooperate to form a bottom permeation gas path, so that the protective gas can jointly act on the powder layer from above and the bottom of the powder layer, and the gas exchange state in the powder calcination process is improved.

The disclosure provides silver hydrogel-bioceramic premixed pastes, processes for manufacturing said premixed pastes, and uses of said premixed pastes in dental and / or medical applications. The premixed paste comprises at least one silver nanoparticle and / or at least one silver ion, at least one hydrogel former, at least one hydratable bioceramic material, and at least one non-aqueous liquid carrier that is hydrophilic and able to undergo an exchange with a water-based liquid when the premixed paste is exposed to an environment where water-based liquids are present.

The present invention relates to a medical device manufactured using the additive manufacturing process (3D printing). It is a medical device used preferably as a bone graft composed of a porous structure based on bioceramics based on β-tricalcium phosphate (β-TCP) or hydroxyapatite, which may or not contain nanostructures in its composition, for example: carbon nanostructures (graphene, graphene oxide, reduced graphene oxide, carbon nanotubes, etc.) and, in preferred embodiments, stem cells and polymeric membrane. Also, the present invention relates to the use of this device as a bone graft and the process of preparing this device.

The application discloses a wrinkled fruit-like bioceramic microparticle-based composite material and a preparation method and application thereof, and belongs to the technical field of biomedical materials. The preparation method comprises the following steps: 5-15% of bioceramic microparticles and 85-95% of microfiber gel are mixed according to the percentage by weight, and then a composite material is obtained through high-speed homogenization. The application provides a wrinkled fruit-like bioceramic microparticle-based composite material, which combines bioceramic microparticles and microfiber gel, has good biocompatibility, and can promote cell adhesion and tissue regeneration at a soft and hard tissue joint part. The composite material is particularly suitable for repairing tendon injury, and can effectively promote the regeneration of a tendon and a tendon-bone stop.

A wearable fabric for photo-stimulating a biological system includes at least one piece of textile, a plurality of bioceramic particles, and at least one nutrient-based precursor. The at least one piece of textile includes a plurality of interwoven polymeric fibers, an outer textile surface, and an inner textile surface. The outer textile surface and the inner textile surface are positioned opposite to each other about the at least one piece of textile. The quantity of bioceramic particles is uniformly integrated amongst the plurality of interwoven polymeric fibers. The at least one nutrient-based precursor is integrated amongst the plurality of interwoven polymeric fibers as the at least one nutrient-based precursor is configured to frictionally dislodge from the plurality of interwoven polymeric fibers as the inner textile surface is in physical contact with a wearer's skin to stimulate the production of Vitamin D and to stimulate bone growth.

The application discloses a kind of bioceramic microsphere soft tissue injection and its preparation method and application, it is related to the technical field of biomedical materials.It includes the following weight parts raw materials: 100-120 weight parts gel carrier and 50-98 weight parts bioceramic microspheres.The application designs a kind of bioceramic microsphere soft tissue injection, and the soft tissue injection is composed of bioceramic microspheres and gel carrier, and the bioceramic microspheres used in the application reduce the inflammatory response of bioceramic microsphere soft tissue injection while ensuring good cell activity, loading capacity and rheological properties.

This invention discloses a highly active ceramic-collagen composite bone scaffold and its preparation method, belonging to the field of bone repair material preparation technology. Quaternized ammonium inorganic material inclusions, photosensitive resin, and dispersant are mixed and ball-milled to obtain a mixed slurry. The mixed slurry is then printed to obtain a bioceramic porous scaffold green body. The bioceramic porous scaffold green body is sintered to obtain a bioceramic porous scaffold. The bioceramic porous scaffold is then vacuum-mixed with collagen fiber slurry, followed by post-treatment to obtain a ceramic-collagen composite scaffold. The ceramic-collagen composite scaffold is then impregnated with rhBMP-2 solution to obtain the highly active ceramic-collagen composite bone scaffold. The preparation method of this invention not only solves the mechanical properties of the prepared bone scaffold but also achieves good osteogenic effects.

The present invention provides a method for producing physiologically active water, and physiologically active water produced thereby, the method comprising: a raw material preparation step for separating and extracting somatide minerals from minerals and pulverizing same; a step for milling the somatide minerals to prepare somatide QELBY powder; a step for molding the somatide QELBY powder into circular, square, hexagonal, triangular, or pyramidal shapes and then firing same at a temperature of 1100 °C to 1200 °C to produce bioceramics; and a purification step for placing the bioceramics in water and leaving same to stand.

This application discloses a composite thin film and its preparation method, optoelectronic device, and display device, relating to the field of display technology. The composite thin film includes a first film layer and a second film layer stacked together; wherein the material of the second film layer includes a first inorganic nanomaterial containing hydroxyl groups or a hydroxyl-containing compound, and the hydroxyl-containing compound includes one or more of hydroxyl-containing bioceramics, hydroxyl-containing resins, and hydroxyl-containing steroids. This application provides a novel composite thin film.

The invention relates to the technical field of biological ceramics, in particular to zirconium oxide regenerated by glass powder permeation and a preparation method thereof. The core of the method is that alkali solution activation and sequential vacuum infiltration treatment of acid catalysis silicon boron sol and an alkaline silicate-boric acid solution are carried out on a pre-sintered porous green body, so that a silicon boron transition phase is formed on the surface of a pore wall / microcrack in situ, and the wettability and interface bonding strength of subsequent borosilicate glass powder slurry are enhanced. Through optimization of a glass powder formula and a stepped heating sintering process, filling of relative pores of the glass and healing of micro-cracks are realized. The obtained material has high density and excellent bending strength and fracture toughness, and is suitable for high-performance scenes such as dental restoration.

The application discloses a kind of interdental space maintaining material and its processing method, belong to oral prosthetic material technical field.The material includes successively from inside to outside: metal base layer, functional response layer and bioceramic protective layer.The metal base layer uses low sensitization cobalt-chromium base alloy;The functional response layer is distributed on the surface of metal base layer, and it contains microscale energy storage cavity array, and cavity is filled with the pH response type drug-loaded gel consisting of pH sensitive polymer matrix and inorganic mineralization precursor particles;The bioceramic protective layer is coated outside the functional response layer, and has through microporous structure.The application also provides the processing method of the material.The application can intelligently release mineralizing substances under oral acid environment by constructing pH-ion pump bidirectional regulation mechanism, in-situ plugs metal ion leakage and neutralizes acid environment, significantly improves the biological safety, mechanical stability and caries prevention ability of the material, especially suitable for children in mixed dentition period.

The invention discloses a photocuring forming method for a biological ceramic additive of a preformed crown and the preformed crown. The method comprises the following steps: preparing a liquid printing material, wherein the liquid printing material comprises the following components: liquid polymethyl methacrylate, nano-scale zirconium oxide particles, nano-scale silicon dioxide particles and a photoinitiator; the liquid printing material is subjected to surface projection photocuring printing through a photocuring 3D printer, layer-by-layer exposure is conducted through a light source projecting upwards from the bottom in the printing process, and the liquid printing material is cured and formed in the vertical direction; the polymethyl methacrylate is cured, so that a microstructure after the polymethyl methacrylate is cured comprises densely distributed nanoscale columnar units, and the nano zirconium oxide particles and the nano silicon dioxide particles are dispersed in the nanoscale columnar units; and after printing is completed, the supporting structure is removed, polishing treatment is conducted, and the formed preformed crown is obtained. According to the method, many problems caused by a high-temperature sintering link in the prior art can be solved.

The present application relates to the technical field of bioceramics, and particularly relates to a method for regenerating zirconia by using glass powder infiltration and a preparation method thereof. The core of the method is to perform alkali solution activation on a pre-sintered porous blank, and sequentially perform vacuum infiltration treatment on the acid catalytic silicon boron sol and the alkaline silicate-boric acid solution, so as to form a silicon boron transition phase in situ on the pore wall / microcrack surface, and enhance the wettability and interface bonding strength of the subsequent borosilicate glass powder slurry. By optimizing the glass powder formula and the stepwise heating sintering process, the glass phase is filled in the relative pores and the microcracks are healed. The obtained material has high density, excellent bending strength and fracture toughness, and is suitable for high-performance scenes such as dental restoration.