68 results about "Oral Prosthesis" patented technology

The present invention provides methods for acquiring and utilizing time-based 3d jaw motion images (4d datasets) to enhance the computer-aided design (CAD) of dental devices, which may include dental restorations, oral prostheses, and oral appliances. These 4d datasets may be used directly to provide a jaw motion model suitable for enhanced CAD or, they may be used to derive mathematical expressions that are then used to drive a motion simulation. The methods of the invention are based on acquiring time-based 3d images (a 4d sequence) of the upper and lower teeth, with each 3d frame in the time sequence capturing some upper and lower arch anatomy (the oral anatomy). Each image in the 4d sequence may therefore contain an accurate record of the relationship between the upper and lower arch in three dimensions.

The invention relates to an oral cavity restoring body making equipment based on CAD / CAM technology, the invention discloses a digitalization oral cavity restoring body making equipment comprising a laser three-dimensional scanning system for acquiring tooth jaw model and articulation recording three-dimensional data, an oral cavity restoring CAD / CAM design system for rapidly making the oral cavity restoring body and a specific digital control equipment for machining oral cavity restoring body, the laser three-dimensional scanning system is communicated with the oral cavity restoring CAD / CAM design system, the oral cavity restoring CAD /CAM design system is communicated with the specific digital control equipment. The invention has simple operation, high efficiency and manufacturing accuracy, can obviously shorten the curing period, improve the work efficiency, alleviate the patient pain, simultaneously improve the quality of the oral cavity restoring body.

The invention relates to a 3D printing composite material for mouth rehabilitation and a preparation and using method of the 3D printing composite material. The 3D printing composite material for mouth rehabilitation is characterized by comprising the following components in parts by weight: 10-40 parts of low-viscosity monomer, 10-40 parts of enhanced monomer or low polymer, 150-200 parts of ceramic powder, 5-20 parts of expansion monomer, 5-15 parts of a dispersing agent, 2-6 parts of a short-wave photoinitiator, 1-3 parts of a long-wave photoinitiator, 1-3 parts of an ultraviolet absorber and 2-5 parts of polymerizable quaternary ammonium salt anti-bacterial monomer. The 3D printing composite material for mouth rehabilitation is small in curing shrinkage, short in curing time and high in anti-bacterial property, and is suitable for manufacturing a dental prosthesis.

A laser shaping method for preparing the metallic object used to repair tooth features that combination of 3D laser shaping technique with CAD and CAM to prepare said metallic object directly from metal powder includes generating a 3D CAD model of said object by computer, layering the model by a certain thickness to convert the 3D information to a series of 2D contour information, and laser coating to stacking metal powder by layer according to said contour information until the object is finished.

The invention discloses a five-axis linkage simulation machining method of a dental prosthesis, which comprises the following steps: firstly, carrying out automatic identification and extraction on the characteristic surfaces of the tips, iliac crests, nests and grooves of the dental prosthesis; then, determining the machining tool path of five-axis linkage high-speed milling according to the original appearance of the occlusal surface of an offending tooth and the changing rule of the normal vectors of all points on each characteristic surface; and finally moving a micro-diameter ball-head cutter under the command of spline interpolation machining numerical control codes along the machining tool path to obtain the dental prosthesis by milling. The simulation machining method of the invention solves the problems of low machining accuracy, poor machining pattern, long manufacturing period, poor occlusion function and easy detention of meal residue of the existing dental prosthesis, improves the machining speed and accuracy of the dental prosthesis, and effectively reduces the manufacturing cost.

The invention discloses a die-free digital adaptation method for a dental prosthesis. A scanner is used for scanning the oral disease site of a patient to acquire three-dimensional data of the disease site, a dental prosthesis product is designed and processed on the basis, the processed finished product is scanned and sampled again by the scanner, digital point cloud information of the product is acquired, three-dimensional sampled data of the product are compared with original design data to obtain processing errors of the dental prosthesis product as a preliminary adaptation result, and the three-dimensional sampled data of the product are compared with three-dimensional sampled data of the oral disease site to obtain adaptability of the dental prosthesis product and the oral disease site. An improvement foundation is provided for product design by performing adaptation twice. The method overcomes the shortcomings of a complicated traditional method, material cost is reduced, product manufacturing and detecting time is shortened, detection accuracy is improved, and the burden of a technician and a doctor is greatly relieved.

The invention provides a raw material for an all-ceramic dental restoration system and a rapid prototyping method of the raw material, which belongs to the technical field of materials and preparation methods thereof. The raw material comprises the following components in weight part: 20 to 75 parts of ultrafine ceramic powders, 0.1 to 5 parts of coloring agent, 0.1 to 5 parts of fluorescent agent, 0.1 to 5 parts of dispersant, 0 to 20 parts of flocculating agent, 0 to 5 parts of thickening agent, 0 to 5 parts of flow promoting agent and 0 to 10 parts of strengthening auxiliary. According to the technical scheme of the invention, embryo bodies can be directly molded without the need of adding any binder. Therefore, dental restorations are high in strength after the later sintering process.

A dental tray assembly for storage of oral prosthetics includes a base and a cover, associated with the base and being configured to be alternately positioned relative to the base in a first, closed position, and a second, open position. A biasing element interconnects the base and the cover to provide a biasing force between the cover and the base, the biasing force varying with position of the cover relative to the base to provide an attractive force between the cover and the base when the cover is in the first, closed position, and a repellant force between the cover and the base when the cover is in the second, open position. A storage tray is nestable within the base, the storage tray including at least two compartments, each compartment being configured to receive and store an oral prosthetic therein.

The disclosed tester comprises a frame with four posts, bottom plate with a dynamometer, an accommodate-liquid pan, a clamp bottom plate, and a clamp; the top plate with a lock right angle plate and right plate; a 3D digital-control operation platform with X-direction connected to dentistry hand piece, Y-direction and Z-direction platforms every with a straight line slipway of ball screw gear connected to platform motor. This invention fits to fine repair and on-line monitor.

The invention relates to a mobile traffic workstation of a CAD (Computer Aided Design)-CAM (Computer Aided Manufacture)-3D printing system and a method for automatically processing a dental restoration body, and provides two rapid restoration systems. The mobile traffic workstation comprises a vehicle, a boat or a plane. A compound system composed of an optical scanning and computer aided design system, a CAD/CAM auxiliary system, a selective laser cladding machine and a numerical control cutting machine tool is mounted in the space of the vehicle, the boat or the plane. The compound system composed of the optical scanning and computer aided design system, a CAD auxiliary system, the selective laser cladding machine and the numerical control cutting machine tool is mounted in the space of the vehicle, the boat or the plane. The mobile traffic workstation is equivalent to a mobile denture digital processing plant. According to the mobile traffic workstation and the method, the mobile traffic workstation can be rapidly driven to border defence or remote areas; the rapid and convenient tooth and dentition defect restoration service can be provided for a great number of liberation army commanders and fighters or field workers of special industries; therefore, the gap in this aspect is filled; the customer-oriented concept is represented; the traditional treatment seeking mode is subverted; and the mobile traffic workstation and the method bring great convenience to the patients and have wide application prospects.

The invention discloses a completely novel dental restoration automatic processing method; according to the method, a dental restoration is processed through optical scanning and by virtue of a composite system which is composed of a computer aided design (CAD) system, a CAD auxiliary system and a selective laser cladding machine; the method, by combining an existing dental CAD system and a metal 3D printing technology, can rapidly manufacture the individual metal dental restoration, and a conventional manufacturing mode of an implant and upper structures thereof can be changed; by changing numerical control cutting processing into metal 3D printing processing, a processing efficiency can be greatly improved, and individual manufacturing can be also achieved; when necessary, the two processing modes, namely the metal 3D printing processing and the numerical control cutting aided processing, can be organically combined, so that the processing method can take advantages of the two processing modes, and the perfect combination of metal 3D printing and numerical control cutting is achieved; therefore, the conventional manufacturing mode of the implant and the upper structures thereof is changed.

The invention relates to a device for manufacturing a dental crown, in particular to a machining tool. An oral prosthesis machining tool of the invention comprises a tool framework; three translation axes in the transverse, longitudinal and vertical three-dimension direction are arranged on the tool framework; and one side of the transverse translation axis is provided with a workpiece positioning device which is connected with the tool framework through a flexible connector and can slide along the transverse translation axis. The machining tool of the invention has the advantages of simple structure, easy control and operation, high efficiency, high precision and good economical efficiency, can machine metals and machine ceramics with performance closer to that of dental materials by introducing an automatic industrial production system, and meanwhile can establish an interactive network between a central work station and substations by using network technology to implement long-distance design and manufacture and wearing of the prosthesis so as to reduce the indirect expense of wearing and realize resource sharing; therefore, the oral prosthesis machining tool is easy to popularize and use in the market, and has broad industrialized prospect.

The invention discloses a design method, system and device of a prosthodontic body and a readable storage medium. The method comprises the steps of obtaining three-dimensional scan data of the oral cavity of a patient; on the basis of comparing the similarity of the three-dimensional scan data and three-dimensional oral data in an oral model database, selecting the closest three-dimensional oral data for the three-dimensional scan data from the established oral model database; on the basis of a tooth area of ill teeth in the oral cavity of the patient, selecting teeth on the corresponding tooth area in a three-dimensional oral model corresponding to the closest three-dimensional oral data as the prosthodontic body, and obtaining three-dimensional data of the prosthodontic body; convertingthe three-dimensional data of the prosthodontic body into processing data required by dental digital processing equipment. The system comprises a receiving unit, a comparison unit, a screening unit and an output unit. According to the design method, system and device of the prosthodontic body and the readable storage medium, the tooth design is completed on the basis of a computer without manual operation, and the time and effort are saved; meanwhile, the errors caused when different levels of operators operate the system to design prosthodontic bodies can be avoided, and the comfort degree ofthe patient wearing the prosthodontic body is improved.

The invention provides a processing method for zirconia all-porcelain dentures. The processing method comprises the following steps: S1, scanning; S2, processing; S3, crystallization; S4, applicationof porcelain; S5, try-in and adjustment; S6, finishing of porcelain; and S7, glazing. The processing method provided by the invention eliminate potential corrosion of non-noble metal and harm of non-noble metal to human beings; a zirconia material is used, the zirconia material has good biocompatibility, a beautiful natural color, stable physical and chemical properties, the properties of the zirconia material are close to the properties of teeth, and dental plaques hardly adhere onto the zirconia material; direct CAM abrasive machining is employed for a part of sintered zirconia materials toprepare dental restorations like a dental crown and a bridge pontic, and the dental restorations are fully sintered to obtain all-porcelain restorations with excellent mechanical properties, good adaptability and requirement-meeting aesthetic performance; and the processing method meets the requirements for high efficiency, high quality and economic performance, has high processing efficiency, greatly reduces time for oral treatment, significantly shortens the course of treatment and mitigates the pain of patients.

The invention discloses a dental restoration design method, system and device and a readable storage medium. The method includes the steps: acquiring original three-dimensional oral data of a patient;calculating the original three-dimensional data based on a denture design optimization algorithm to generate restoration three-dimensional data; transforming the restoration three-dimensional data into processed data needed by a dental digital processing device. The system comprises a receiving unit, a calculation unit and an output unit, wherein the receiving unit receives the original three-dimensional oral data of the patient, the calculation unit calculates the original three-dimensional data according to the denture design optimization algorithm to generate the restoration three-dimensional data, and the output unit transforms the restoration three-dimensional data into the processed data needed by the dental digital processing device. By the algorithm for calculating a dental restoration by intelligent learning comparative optimization, teeth are designed based on a computer, manual operation is omitted, and time and labor are saved. Besides, dental restoration design errors caused by operation of the system by operators with different levels can be avoided, and restoration wearing comfort of the patient and the like are improved.

The invention discloses a dental prosthesis fatigue testing machine. The dental prosthesis fatigue testing machine comprises a left side plate and a right side plate which are oppositely arranged, wherein a fixing bottom plate and a prosthesis test specimen bedplate capable of reciprocating in a vertical up and down manner are respectively arranged at the bottom and the middle of a zone between the left side plate and the right side plate; multiple rows of prosthesis test specimen fitting seats are uniformly arranged on the test specimen bedplate in a straight line; an elastic telescoping mechanism driven by an eccentric wheel mechanism is arranged above the prosthesis test specimen fitting seats; plunger chips which correspond to the prosthesis test specimen fitting seats and on which sine wave cyclic loads are applied are arranged at the bottom of the elastic telescoping mechanism. The dental prosthesis fatigue testing machine is simple in structure and reasonable in design; the chewing condition in the mouth cavity of a human body is simulated by applying the principles of a cam mechanism and an eccentric gear mechanism; the dental prosthesis fatigue testing machine is provided with an artificial saliva circulating device with the alternating changeable temperature so as to simulate a humid mouth cavity saliva environment and different temperature variations occurring after taking food and can be used for carrying out scientific fatigue testing on the prosthesis so as to obtain accurate data for clinic reference.

The invention discloses a digital processing method for a dental restoration, and a processing system thereof, and relates to the technical field of dental restoration processing. The problems of multiple process and many mistakes of dental restoration preparation are solved. The processing method comprises the following steps: 1, a data collecting device performs data modulo on a tooth; 2, a dataprocessing device generates a three-dimensional digital model of the dental restoration according to step 1; 3, a data interaction device assists a physician to know a contrast difference before andafter dental restoration simulated operation; 4, a design optimizing device optimizes and makes the dental restoration; 5, an auxiliary processing device cleans, dyes and sinters the dental restoration. The method and the system improve the processing efficiency of the dental restoration, simplify the processing flow, save the waiting time for patients and physicians, improve the service quality,make the physicians perform real-time monitoring according to the conditions of the simulated operation, and ensure the quality of the final oral restoration.

The invention discloses a zirconium oxide false tooth with gradient mechanical properties, and a manufacturing method of the zirconium oxide false tooth. The false tooth comprises an integrally formedbase body and an occlusal surface positioned on the base body, wherein the occlusal surface is provided with a plurality of pores which pass through the interior of the base body; the occlusal surface part and the base body part have different porosities and pore sizes, and the pores are internally filled with dental repairing resin or polyetheretherketone, so that the occlusal surface part has aself-lubricating property, and the excessive wear of the natural surface (4) at the opposite side of the zirconium oxide false tooth is avoided; the manufacturing method comprises the following steps: (1) designing a porous part and preparing a printed document; (2) preparing slurry; (3) forming a green body; (4) carrying out degreasing and sintering treatment; (5) injecting the polyetheretherketone or photosensitive resin for dental restoration. The manufacturing method provided by the invention is used for improving the fracture toughness of a zirconium oxide ceramic material and reducing the hardness so as to enable the zirconium oxide false tooth to be matched with the hardness of natural teeth and human skeleton; the zirconium oxide false tooth can meet demands of clinical applications such as dental prosthesis, false teeth, bone repair and bone filling.

An oral prosthesis system comprising an electrical tongue stimulation unit associated with a wireless transceiver device and comprising two microcontrollers, the first microcontroller dedicated to transmit and receive operations, and the second microcontroller dedicated to the control of an electrical stimulation array.

The invention relates to a method for manufacturing a oral prostheses stent formed by compounding moulding of additional and subtractive materials, which comprises the following steps: 1) acquiring a three-dimensional model data of a patient's oral maxilla: directly scanning a patient's mouth through a scanning device, and directly obtaining three-dimensional point cloud data of the patient's mouth, and exporting the 3D point cloud data by the scanning software to output a triangular mesh model; 2) obtaining a CAD model of the final printable manufactured stent; 3) using a 3D printing solid stent using an additive manufacturing technology; 4) transferring the prostheses stent to-be-processed from a SLM additive manufacturing machine to a machining tool, and taking out the prostheses stent with a substrate, a support and positioning marks manufactured in step 3) from the SLM machining tool; and 5) obtaining the manufacturing coordinate system of the additive by mechanical or visual positioning method, and performing numerical control programming according to a coordinate conversion relationship between a coordinate system and a machining coordinate system to perform the subtractive material manufacturing process on the prostheses stent. The method has high processing precision and wider application range.

The invention relates to a manufacturing method of an additional material for an all-ceramic dental restoration. A selective photocuring technology is used for quickly forming to obtain an auxiliary forming mould, the auxiliary forming mould is taken as a template to generate an automatic correction function on a dental restoration ceramic greenware obtained by a ceramic slurry extrusion technology, so as to achieve the advantages of integrating high accuracy of the selective photocuring technology and high quality of the ceramic slurry extrusion technology. In addition, a ceramic slurry extrusion additional material manufacturing device with a special multi-material extrusion device can be used for directly generating the multilayer all-ceramic dental restoration of simulated natural teeth, technical processes are further shortened, and the manufacturing method hopefully serves as a technology of high accuracy and high efficiency for manufacturing the all-ceramic dental restoration infuture.

The invention provides a numerical control processing method for a dental restoration body. The method comprises the following steps of: determining the type of an interpolation track section by applying a set of classification standard to the interpolation track section according to a result obtained by applying the set of classification standard to the interpolation track section, wherein the interpolation track section is divided into a first type, a second type and a third type; and processing the interpolation track section by different dental restoration body numerical control processing methods according to the type of the interpolation track section so as to mold the dental restoration body, wherein the dental restoration body numerical control processing method comprises a first speed planning method, a second speed planning method and a third speed planning method. By the numerical control processing method for the dental restoration body provided by the embodiment of the invention, tracks in different areas are classified; and by different corresponding subsequent processing methods, the processing time of the dental restoration body can be remarkably saved, the processing efficiency can be improved, and the accuracy of the dental restoration body can be ensured at the same time.

The invention relates to a preparation method of an all-ceramic oral cavity repairing composite material with machinable zirconia/lanthanum phosphate, belonging to an inorganic composite material preparation field. The method of the invention is essentially characterized by adjusting the strength and toughness of compound ceramic of zirconia and lanthanum phosphate through controlling the content of zirconia and lanthanum phosphate; the preparation technology of the invention comprises the following processes: lanthanum phosphate powders are prepared; mixture powders of yttrium oxide, lanthanum phosphate and zirconia are prepared by a certain mass ratio; isostatic pressing and sintering is carried out for the mixture under 150 to 250MPa and 1,500 to 1,650 DEG C respectively; and finally the dental composite ceramic material with machinable zirconia and lanthanum phosphate of the invention is obtained. The composite of the invention is suitable for all-ceramic dental repair of oral cavity clinic.

The invention discloses a dental prosthesis automatic polishing device. The device includes a polishing machine A, a controller B, a computer C and image scanning equipment D; an output port of the image scanning equipment D is connected to a receiving port of the computer C through a CAN bus; an input port of the controller B is connected to the output port of the image scanning equipment D and an output port of the computer C; and an output port of the controller B is connected to a part of assemblies in the polishing machine A. The device can perform constant pressure polishing on a prosthesis surface (concave and convex) with a complex anatomical form, can preset a polishing area for prostheses of different kinds and forms, and can voluntarily select the optimal polishing routes; stable dental prostheses with suitable surface roughness can be provided for oral clinical repair and treatment processes; and the structure of the device is reasonable, novel and practical in design.