1689results about "Artificial teeth" patented technology

The present invention provides a method for producing a dental restoration for preferably at least a part of at least one tooth. The method comprises the step of obtaining design data, wherein the design data includes acquired data and preliminary design data of the dental restoration. The method further comprises the step of modifying the preliminary design data before at least one manufacturing step to obtain modified design data and producing the dental restoration based on the modified design data.

The invention relates to the technical field of denture manufacturing, and discloses a high-precision digital complete denture 3D printing method which comprises the following steps: obtaining an initial denture model of a target object; acquiring occlusal point adjustment data; acquiring actual adjustment data; adjusting the initial false tooth model based on the actual adjustment data, and converting the adjusted initial false tooth model into a 3D printing instruction for 3D printing; according to the method, stress distribution during occlusion is simulated through finite element analysis, a three-dimensional occlusion thermodynamic diagram is obtained and input into a constructed CNN network model, occlusion point adjustment data are obtained, adjustment data of effective occlusion contact points are mapped into a solid model, and actual adjustment data are obtained; three-dimensional data of the oral cavity of a patient is obtained through a scanner, digital analysis is conducted in combination with a neural network model, the denture manufacturing precision is improved, manufacturing is conducted in a 3D printing mode, the manufacturing efficiency is high, the patient feels comfortable when wearing the denture and occludes the denture well, and the problem of diet difficulty of the implant patient is solved in time.

Methods and systems for automatic generation of a crown shape for a dentition are described wherein the method comprises segmenting 3D maxillofacial data comprising the dentition, preferably by one or more trained deep neural networks, into a set of 3D dental objects; determining or receiving a position of a tooth, preferably based on a tooth classifier, in the dentition for which a target crown shape is to be determined; determining 3D spatial constraints for the target crown shape based on the set of 3D dental objects; determining an initial pose based for the target crown shape based on one or more 3D dental objects of the set of 3D dental objects; and, optimizing one or more optimization parameters associated with a digital crown shape model to determine the target crown shape, the optimizing including determining a trial crown shape using the digital crown shape model and the one or more optimization parameters, computing a loss value for the trial crown shape based on the 3D spatial constraints and the initial pose; and, if the loss value does not meet one or more optimization conditions modifying the one or more optimization parameters to determine a further trial crown shape and to compute a further loss value.

The invention relates to the field of false tooth machining equipment, in particular to an intelligent standby cutter switching method and device for false tooth machining equipment, and the method comprises the steps: obtaining state parameters and use parameters of a current cutter in real time; according to the state parameters and the use parameters of the current cutter, whether the condition of replacing the standby cutter is met or not is judged; when the current cutter meets the condition of replacing the standby cutter, analyzing the replacement reason of the current cutter, and obtaining specification parameters of the current cutter; matching a target standby tool according to the specification parameter of the current tool; generating a replacement strategy of the target standby cutter according to the replacement reason of the current cutter; and on the basis of the replacement strategy and the target standby tool, replacing the tool of the false tooth processing equipment, and updating the state parameter and the use parameter of the replaced tool. By accurately analyzing the use state of the tool, it is ensured that the tool is replaced in time when going wrong, machining errors or product defects caused by tool abrasion or other problems are avoided, and therefore the machining precision and the product quality are guaranteed.

The utility model discloses a false tooth with an anti-loosening structure, which comprises a false tooth, and the false tooth is assembled on a gum through the anti-loosening structure; the anti-falling structure comprises a mounting rod, a mounting block and a connecting block, three first planting grooves in threaded connection with the mounting rod are formed in the top of the gum, a clamping cap is mounted at the top end of the mounting rod, a connecting cylinder is mounted in the mounting block, a through hole communicated with the connecting cylinder is formed in the bottom of the mounting block, and the through hole corresponds to the clamping cap in position. A spring is placed in a cavity formed between the outer side of the connecting cylinder and the mounting block, an arc-shaped clamping groove in extrusion contact with the spring is formed in the outer side of the clamping cap, and inserting rods are symmetrically mounted at the top end of the connecting block. The mounting rod and the inserting rod are respectively fixed on the gum and the false tooth of a patient, parts are simple and convenient to replace subsequently, the false tooth is pressed during use, the clamping cap is stressed to extrude the spring, and the spring is clamped on the outer side of the clamping cap, so that the gum and the false tooth of the patient can be quickly fixed, and the false tooth cannot fall off during daily chewing.

The invention provides an implant immediate denture precise manufacturing system based on preoperative planning and three-dimensional registration. An example method includes obtaining first oral data, the first oral data including three-dimensional data of a denture model and three-dimensional data of a marker; acquiring second oral cavity data, wherein the second oral cavity data comprises scanning data of a plurality of bases fixed in the oral cavity and a marker; registering the first scanning data and the second scanning data based on the matching of the three-dimensional data of the marker and the scanning data of the marker; a denture model to be processed is generated based on a result of the registration, the denture model to be processed comprising three-dimensional data of the denture model and positioning information of a plurality of holes, each hole being for accommodating one of the plurality of abutment. According to the embodiment of the invention, the accurate positioning of the false tooth model and the abutment is realized by using a digital technology, the accurate matching of the false tooth and the abutment is ensured, and the comfort and experience of a dental implant patient are improved.

Orthodontic appliances have a temporary flexural modulus that decreases when subjected to environmental conditions such as heat. As the flexural modulus decreases, the appliance becomes more flexible and therefore less initially uncomfortable. As the appliance is worn, it cools, gradually increasing the flexural modulus and applying greater orthodontic forces to the teeth.

An embodiment of the present disclosure provides a packaging container, a plasma treatment apparatus including the same, and a plasma treatment method, wherein the packaging container includes a housing portion capable of accommodating a treatment target, wherein the housing portion includes a permeable portion which is permeable to gas, and an electrical connection member electrically connectable to an electrode portion disposed externally, and dielectric-barrier discharge is generated inside the housing portion through the permeable portion so that the treatment target accommodated inside the housing portion is plasma-treated.

Disclosed is a test apparatus for denture processing, including a carrying mechanism provided on a placement surface, a hardness test mechanism, an internal support mechanism, a stop mechanism, a drive mechanism and a transmit mechanism. The internal support mechanism is configured to clamp a to-be-test denture and includes a threaded shaft (2), an internal support member and a main shaft (1). The internal support member is slidably connected to the carrying mechanism along a first direction and is at least partially provided in the carrying mechanism. The threaded shaft (2) is provided with two thread portions with opposite rotation directions, the thread portions and the internal support members are in a one-to-one correspondence, part of the internal support member provided in the carrying mechanism is threaded with the thread portion, and the threaded shaft (2) is connected to the main shaft (1) through a damping bearing (3).

The invention relates to the technical field of implant denture repair of jaw reconstruction patients, and discloses a preparation method and equipment of a soft tissue fixing and forming device and a medium, and the method comprises the following steps: acquiring ct data and scanning data; the method comprises the following steps of: performing fitting on the basis of ct data and scanning data, determining the thickness of surface soft tissue of an alveolar bone or a reconstructed jaw bone, generating a virtual implant according to an implant implanted by a patient, and obtaining the three-dimensional position of each implant on the basis of the virtual implant and implant ct, thereby generating a virtual screw retention abutment according to the thickness of the surface soft tissue of the alveolar bone or the reconstructed jaw bone. Determining an abutment gum penetrating position of the virtual screw retention abutment, and finally constructing a soft tissue fixing and forming device for jaw defect implantation based on the abutment gum penetrating position, the implant three-dimensional position and scanning data. The soft tissue fixing and forming device for jaw defect implantation has enough retention force, is not influenced by lip and cheek movement, is comfortable to wear, is easy to clean and has wider indications.

The invention discloses dental prosthesis manufacturing equipment based on 3D printing, relates to the technical field of dental prosthesis manufacturing, and aims at solving the technical problems that in the dental prosthesis grinding process, a proper grinding tool needs to be frequently found for grinding, the process is troublesome, time is wasted, and the grinding efficiency is reduced. Comprising an output cavity assembly, a cylindrical grinding assembly, a spherical grinding assembly and a conical grinding assembly, the output cavity assembly comprises a transmission bin and a fixed bin, the transmission bin is movably connected with the fixed bin, the cylindrical grinding assembly comprises a first rotating cylinder, one end of the first rotating cylinder is connected with a cylindrical grinding head, and a spherical grinding head is arranged in an inner cavity of the cylindrical grinding head; a conical grinding head is arranged in an inner cavity of the spherical grinding head. The dental prosthesis grinding device has the advantages that grinding equipment of various specifications does not need to be prepared, all-around grinding of the dental prosthesis can be completed only through the dental prosthesis grinding device, convenience is achieved, the grinding time is saved, and the grinding efficiency is improved.

The invention discloses false tooth machining polishing equipment capable of avoiding splashing, and relates to the technical field of false tooth machining, the false tooth machining polishing equipment comprises a base, a fixing frame is fixedly mounted at the top of the base, an electric push rod is fixedly mounted on one side of the top of the fixing frame, and the movable end of the electric push rod penetrates through the fixing frame and is fixedly provided with a movable plate; a fixed frame is arranged on the base, a movable plate is arranged on the fixed frame, a guide rod is fixedly arranged on one side of the top of the movable plate, the guide rod is slidably connected with the fixed frame, the polishing assembly is arranged below the movable plate and comprises a mounting frame and an adjusting assembly, the adjusting assembly is arranged on the top of the base, the fixed assembly is arranged above the base, and the mounting frame is fixedly arranged on one side of the bottom of the movable plate; according to the denture polishing device, in the denture polishing process, the polishing heads with different roughness degrees can be conveniently switched, the time for replacing the polishing heads is saved, rapid switching can be conducted, operation of workers is facilitated, and the working efficiency is improved.

The invention provides a dental restoration generation method and device, a manufacturing system and a storage medium, and relates to the technical field of stomatology. The method for generating the dental restoration comprises the following steps: acquiring static data of upper and lower jaws and movement track data of the lower jaw of a patient; acquiring facial morphology data of the patient; generating a virtual patient model according to the upper and lower jaw static data, the lower jaw movement track data and the facial morphology data; obtaining a try-on model according to the dental restoration template model and the virtual patient model; and displaying the image of the try-on model.

A method of generating a virtual 3D model of a dental arch is provided. The method includes receiving an intraoral scan of a dental arch, determining a first depth of a first intraoral 3D surface in the first intraoral scan, and determining a second depth of a second intraoral 3D surface in the first intraoral scan, where a fixed distance exists between the first intraoral 3D surface in the first intraoral scan and the second intraoral 3D surface. The method further includes stitching together the intraoral scans and generating a virtual 3D model of the dental arch from the intraoral scans, where a fixed distance between the first intraoral 3D surface and the second intraoral 3D surface is included in the virtual 3D model.

A manufacturing method for a prosthetic apparatus for dental purpose according to one aspect of the present invention includes: acquiring scan data of a model that is a reproduction of at least a part of an inside of an oral cavity of a patient; creating shape data of a shaped body for dental purpose on a basis of the scan data; producing a shaped body on a basis of the shape data; covering at least a part of the shaped body and at least a part of a model with film, the shaped body attached to the model; releasing air in a part covered with the film to deform the film and bring the shaped body into close contact with the model; and curing the shaped body in a state where the shaped body is in close contact with the model.

The invention relates to the technical field of dental restoration, and discloses a digital customized preformed crown and bridge restoration manufacturing method, which comprises the following operation steps: S10, data import and preprocessing: establishing an order in 3shape software, importing high-quality intraoral scanning data, preprocessing the scanning data to ensure the accuracy and integrity of the data, and storing the data in a database; a basis is provided for subsequent design; and S20, performing virtual tooth extraction and accurate design: performing virtual tooth extraction operation, ensuring that the adjacent surface and the root are smooth after tooth extraction, avoiding excessive repair or false repair, accurately repairing the edge line and the adjacent surface of the digital customized preformed prosthesis by referring to original working mold data, and performing back-cutting according to a target form before restoring a virtual prepared abutment form. According to the manufacturing method of the digitally customized preformed crown and bridge prosthesis, the problems that the existing finished preformed crown is single in variety, natural and inconsistent in appearance and color with the interior of the mouth, the precision is low, and the prosthesis is not matched with the abutment in position are solved.

Methods and systems for automatic generation of a crown shape for a dentition are described wherein the method comprises segmenting 3D maxillofacial data comprising the dentition, preferably by one or more trained deep neural networks, into a set of 3D dental objects; determining or receiving a position of a tooth, preferably based on a tooth classifier, in the dentition for which a target crown shape is to be determined; determining 3D spatial constraints for the target crown shape based on the set of 3D dental objects; determining an initial pose based for the target crown shape based on one or more 3D dental objects of the set of 3D dental objects; and, optimizing one or more optimization parameters associated with a digital crown shape model to determine the target crown shape, the optimizing including determining a trial crown shape using the digital crown shape model and the one or more optimization parameters, computing a loss value for the trial crown shape based on the 3D spatial constraints and the initial pose; and, if the loss value does not meet one or more optimization conditions modifying the one or more optimization parameters to determine a further trial crown shape and to compute a further loss value.

The invention provides a digital complete denture manufacturing method which comprises the following steps: designing a personalized tooth test tray with exposed anterior teeth on the basis of surface scanning and an impression, then wearing the personalized tooth test tray to manufacture a closed impression, determining a vertical and horizontal jaw position relationship, and then precisely machining a complete denture by adopting a digital method. By adopting the method provided by the invention, the patient can wear a pair of closely-attached and comfortable complete dentures when seeing a doctor for the third time. The whole-process digital processing method is adopted, clinical operation is more standard and consistent, the comfort level of a patient is improved, and the processing time and difficulty are greatly reduced.

The utility model relates to the technical field of false tooth manufacturing, and discloses a false tooth manufacturing anti-bubble oscillation structure which comprises a frame, an anti-bubble oscillation device and an anti-bubble oscillation device, the oscillation device is arranged on the frame and is used for discharging bubbles in the gypsum in the false tooth; the clamping device is arranged on the frame and is used for clamping a false tooth; wherein the oscillation device comprises a power device, which is arranged on the frame and is used for driving the moving device; the moving device is arranged on the frame and used for driving the supporting plate on the top to ascend and descend, a motor is started to drive a second rotating rod to rotate, the second rotating rod drives a first bevel gear, the first bevel gear drives a second bevel gear, the second bevel gear drives a first rotating rod, the first rotating rod drives a rotating disc and a trapezoidal block on the top to rotate, the trapezoidal block slides to the bottom of a pulley, and the pulley ascends. And the pulley ascends to drive the moving rod to continuously reciprocate and lift to drive the supporting plate, so that the noise is low during use, and the working environment of workers is improved.

The present invention relates to: a photocurable restoration composition comprising a ceramic composition; and a dental prosthesis using a 3D printer. More specifically, the present invention relates to: a photocurable restoration composition comprising a silane-treated ceramic composition; and a dental prosthesis manufactured using the photocurable restoration composition by using a 3D printer. According to the present invention, it is possible to obtain a dental prosthesis having improved gloss, excellent thermal resistance and hardness, and improved uniformity and reliability.

To provide a calcined body that is processed easier than a conventional calcined body and where differences in hardness between production lots are suppressed.SOLUTION: A calcined body comprises: at least one first transition metal element selected from the group consisting of manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), and silver (Ag); a coloring element of at least one of a lanthanoid rare earth element and a second transition metal element different in kind from the first transition metal element; and zirconia containing a stabilizing element. A content of the first transition metal element is 100 mass.ppm or more, a content of the second transition metal element is less than 100 mass.ppm, and an absolute value of a difference in hardness relative to a hardness of a calcined body obtained from a commercially available powder is 10 HV or less.SELECTED DRAWING: None

To provide a thin magnetic attachment having a simple structure and being easy to manufacture, with a thickness of 0.8 mm or less. [Solution] The hole portion of a magnetic stainless steel cap 11 is made into a ring shape, a ring-shaped sintered rare earth magnet 12 is stored inside it, and the hole portion is covered with a ring-shaped shield plate made of 18Cr-8Ni stainless steel with a martensitic structure. The joint portion is laser welded to form a melted and solidified portion and a modified non-magnetic portion, and the magnetization realizes a simple structure consisting of a rare earth sintered magnet and a stainless steel magnet shield plate.

The invention relates to the technical field of false tooth engraving and milling machines, and discloses a five-axis linkage false tooth engraving and milling machine which comprises a five-axis linkage false tooth engraving and milling machine body, a main shaft shell is arranged in the five-axis linkage false tooth engraving and milling machine body, and a fixing cover is fixedly arranged in the five-axis linkage false tooth engraving and milling machine body; a flexible movable cover is arranged at the top of the fixed cover, a through hole correspondingly connected with the main shaft shell is formed in the top of the movable cover, a sealing ring is arranged at the joint of the movable cover and the main shaft shell, and a collecting box is installed on the back face of the five-axis linkage false tooth engraving and milling machine body. The fixed cover and the movable cover are cooperatively sealed, the movable cover of the multi-layer folded organ pleat structure can tightly move along with the main shaft shell, a machining area is always highly sealed when equipment runs and the main shaft moves, cooling liquid splashing, metal or ceramic chip scattering and dust overflowing are effectively prevented, and the cleanliness of the working environment is greatly 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, and TiO2.

The utility model discloses an anti-loosening telescopic crown denture, and relates to the field of dentures, the anti-loosening telescopic crown denture comprises a tooth body, a connecting assembly mounted on the tooth body, a clamping assembly clamped on the connecting assembly and a denture mounted on the clamping assembly, the connecting assembly comprises a clamping seat fixedly connected to the tooth body, and a through groove is formed in the outer wall of one side of the clamping seat; and a mounting cavity is formed in the clamping seat, an opening is formed in the inner wall of one side of the mounting cavity, the inner wall of the opening is slidably connected with an L-shaped connecting seat, the inner walls of the two sides of the mounting cavity are rotatably connected with the same two-way screw rod, and the outer wall of the two-way screw rod is in threaded connection with two symmetrically-arranged threaded sleeves. The connecting assembly is arranged on the tooth body, the clamping assembly is arranged on the false tooth, and the clamping assembly is matched with the connecting assembly, so that the false tooth is conveniently fixed, meanwhile, an adjustable L-shaped connecting seat in the connecting assembly is convenient for tensioning a clamping seat, and the problem of loosening of the false tooth is effectively avoided.

The invention relates to a zirconium oxide ceramic block and a preparation method and application thereof, the zirconium oxide ceramic block comprises an inner zirconium oxide block and an outer zirconium oxide block wrapping the inner zirconium oxide block, and the outer zirconium oxide block comprises a plurality of zirconium oxide layers which are sequentially laid in the vertical direction according to the order of transparency; the thickness of the zirconium oxide layer with the maximum transparency and the thickness of the zirconium oxide layer with the minimum transparency are both greater than the thickness of the zirconium oxide layer between the maximum transparency and the minimum transparency; the transparency of the inner zirconium oxide block is the same as the maximum transparency of the multiple zirconium oxide layers, the bottom end of the inner zirconium oxide block is located in the zirconium oxide layer with the minimum transparency, and the height of the inner zirconium oxide block is not smaller than 2 / 3 of the height of the outer zirconium oxide block; meanwhile, the invention discloses a preparation method and application of the ceramic block. According to the invention, the structure, color and light transmittance of the tooth can be more truly close to those of a real tooth, the service life of the tooth is prolonged, and the use comfort is improved.

The embodiment of the invention is suitable for the technical field of dentistry and 3D printing, and provides a method and system for manufacturing a dental object, the method comprises the following steps: obtaining a dental model, the dental model comprising at least one abutment and a repair part associated with a dental prosthesis model; establishing a stent model, wherein the stent model is configured to be mounted on an abutment tooth; a base model is established, the base model comprises a first part and a second part, the support model is clamped between the first part and the second part, and the first part of the base model is aligned with the repair part of the dental model; establishing a tooth prosthesis model, wherein the tooth prosthesis model is aligned with the second part of the denture model; manufacturing a base plate based on the first part and the second part of the base plate model, and manufacturing a stent based on the stent model; the base and the stent are connected to obtain a dental object. By adopting the method, the dental object can be manufactured in a digital mode, and the manufacturing efficiency and accuracy of the dental object are improved.

A system can be configured to record a position and orientation of a dental component. The system can include a coping and a replica. The coping can include an anti / rotational feature that is configured to mate with an anti-rotational feature of a dental component. The coping can also include an orientation feature that is configured to convey the orientation of the dental component. The replica can include a first anti-rotational feature that corresponds to the anti-rotational feature of the dental component. The replica can also include a second anti-rotational feature that does not correspond to the anti-rotational feature of the dental component.

The utility model discloses a rubber support false tooth structure, which comprises a rubber support and a false tooth assembly arranged on the rubber support, the false tooth assembly comprises clamping columns, a connecting disc, false teeth and clamping strips, the upper side of the rubber support is provided with uniformly distributed grooves, the clamping columns are arranged in the grooves, two corresponding clamping strips are fixed on the circumferential surfaces of the clamping columns, and the clamping strips are arranged on the connecting disc. A connecting disc is arranged in the groove, a connecting hole is formed in the lower side of the connecting disc, the clamping column is clamped in the connecting hole, and two clamping grooves corresponding to the clamping strips are formed in the connecting hole; a fixing assembly is mounted in the middle of the false tooth and comprises a screw and a turntable, a threaded hole is formed in the middle of the false tooth, the screw is in threaded connection with the interior of the threaded hole, a threaded groove is formed in the upper end of the clamping column, and the lower end of the screw is in threaded connection with the interior of the threaded groove. When the false tooth is damaged, the corresponding rotating disc can be rotated to dismount the corresponding screw, the damaged false tooth can be pulled out after the screw is dismounted, and then a new false tooth can be replaced, so that the false tooth dismounting device is very convenient to use.

Dental blank (1) for the production of a dental prosthetic restoration (10) by subtractive machining, comprising (i) an internal connecting part (2) which has a framework area (3a) in the direction of the coronal area of ​​the dental blank and has an implant connection geometry (3b) in the radicular direction of the dental blank, (ii) wherein the framework area (3a) of the connecting part (2) is connected to a dentin framework area (4) in the direction of the coronal area of ​​the blank (1), and (iii) the dentin framework area (4) is formed from a metal oxide or metal oxide mixture and extends towards the coronal area of ​​the blank (1) with a (iv) outer area (5) of the blank is connected, wherein the outer area (5) of the blank is formed from a dental composite material, a dental glass ceramic comprising lithium disilicate, or a hybrid ceramic with a polymer component, and (v) the dental blank has an elongated lumen (6) inside the implant connection geometry (3b) of the inner connecting part (2) and optionally in the framework area (3a) of the inner connecting part (2), which extends from the top (2.1) to the bottom (2.2) of the implant connection geometry (3b) of the inner connecting part (2) and optionally from the top (3.1) to the bottom (3.2) of the framework area (3a), and the lumen has an opening in the crestal or lingual direction and an opening in the radicular direction.