41 results about "Dental prosthesis" patented technology

The present application relates to the field of dental prosthesis manufacturing, and particularly relates to a 3D printing device and method for customized design of dental prosthesis. The device comprises a printing box, a 3D printing device, a cleaning assembly, a printing base, a donor membrane assembly, an accumulator, a deposition assembly and a prosthesis assembly assembly. The 3D printing device is arranged on the top of the printing chamber; the cleaning assembly is arranged on one side of the 3D printing device; the printing base is arranged at the bottom of the printing chamber and is configured to be reversibly movable; the donor membrane assembly is arranged on the other side of the cleaning assembly; the deposition assembly is arranged in the ring-shaped structure of the membrane; and the prosthesis assembly assembly is arranged through the installation chamber. The present application solves the industry problem of easy collapse of the thin-walled metal base of the dental prosthesis by means of integrated design and laser deposition innovative process, while realizing full-process automatic production, significantly improving efficiency and precision.

The present application relates to the technical field of oral prosthetics, in particular to a porcelain dental prosthesis color prediction system, a construction method and a prediction method, comprising: a multi-modal image acquisition module for acquiring high-definition color images of natural teeth in the oral cavity, three-dimensional scanning images of tooth preparation surfaces and microstructure images of porcelain prosthesis substrates, and synchronously acquiring environmental light parameters; an image recognition processing module for processing original data, outputting natural tooth color space feature vectors, tooth preparation surface morphology parameters and porcelain layer substrate micro-pore distribution parameters; an intelligent color prediction module for constructing a deep learning model, combining an environmental light correction algorithm to predict the final presented color data of the prosthesis; a parameter output and optimization module for generating a color deviation report, outputting porcelain layer thickness adjustment suggestions and firing process parameter optimization schemes, and supporting visual display of the prediction effect. Thus, the problems of one-sided prediction dimension and subjective optimization in the prior art are solved.

The present invention relates to a novel dental prosthetic material and a patient-customized dental prosthesis comprising same, the material improving water resistance, reproducing a color similar to an actual tooth, and thus improving the aesthetic appearance even after prosthetic treatment. In addition, patient-customized prosthetic treatment can be performed using a 3D printer on a tooth requiring prosthetic treatment. The material exhibits enhanced physical properties compared to existing photocurable resin compositions and has excellent adhesive strength, thereby preventing a dental prosthesis from detaching after treatment.

A resin based material whose composition includes a light-curable mixture of monomers of no more than 35 wt. % of an ethoxylated difunctional bisphenol A dimethacrylate; of no more than 10 wt. % of a methacrylate monomer; of no more than 10 wt. % of a difunctional urethane acrylate; of no more than 0.1 wt. % of an optical brightener; of no more than 5 wt. % of silica particles having methacrylate functionalization layers and having an average particle size of less than about 200 nm; of having more than 40 wt. % of an inert glass; of no more than 15 wt. % of a heavy metal oxide; of no more than 2.5 wt. % of an ultraviolet / visible (UV / Vis) light-photo-polymerization initiator; a colorant; and a stabilizer.

The utility model provides a false tooth processing, polishing and dust collecting device, which relates to the technical field of false tooth processing, and comprises a casing, a fixed cylinder, a filter element, a dust collecting pipe and a dust collecting box, the fixing cylinder is arranged on the machine shell, the air channel is arranged at the top of the fixing cylinder, the bottom end of the fixing cylinder is open, and a first sealing piece is arranged on the side edge of the bottom opening. The fixed cylinder and the filter element are connected with the air duct, so that gas entering the air duct is filtered, dust is blocked, the dust is stored in the dust collection box under the action of gravity, the dust collection box is sealed with the fixed cylinder through the first sealing element and the second sealing element, and the dust cannot escape; dust can be directly cleaned by dismounting the inserted dust collection box, and the arrangement of the first sealing element and the second sealing element does not hinder the mounting and dismounting of the dust collection box, so that the cleaning operation is more convenient.

A method for precisely positioning a dental prosthesis workpiece in a machine tool includes creating an impression on a part positionable with respect to the tool in a known position in the tool, allowing arrangement of the workpiece precisely on the impression. The device includes a blank and a counter on which an impression is formed. The blank and the counter have key structures so they can be separated from each other and reproducibly reconnected in the same arrangement. An alternative on a computational basis is to provide the workpiece with referencing bodies, to determine their positions by scanning the workpiece, machining steps being generated based on the scan, and to scan the workpiece in a tool on a blank provided with key structures whose tool coordinates are known to determine the position of the workpiece in the tool both in terms of tool and construction system coordinates.

This invention provides an aluminosilicate-based porous ceramic framework, its preparation method and application, resin-infiltrated ceramic materials and their applications, and dental prostheses, relating to the field of dental materials technology. Using Al2O3, SiO2, Na2O, and K2O as raw materials, the proportions of sodium, potassium, and silicon can be freely adjusted. By changing the relative content of sodium, potassium, and silicon, the porous ceramic framework prepared from aluminosilicate-based sodium-potassium salts exhibits different physicochemical properties. As a matrix, resin-infiltrated ceramic materials with different physicochemical properties and aesthetic characteristics can be prepared to meet the needs of various dental applications.

This utility model relates to the field of dental prosthesis 3D printer technology, specifically a nozzle switching mechanism for a dental prosthesis 3D printer. It includes a moving block and an upper nozzle mounted on one side of the moving block. A U-shaped frame is located at the bottom of the moving block, and a lead screw is rotatably mounted inside the U-shaped frame. A motor is fixedly mounted on the outside of the U-shaped frame, and the motor output is fixedly connected to the lead screw. A strip plate is located below the upper nozzle, and a slider is threaded onto the wall of the lead screw. The slider is fixedly connected to the strip plate. Multiple lower nozzles are evenly distributed at the upper end of the strip plate. A sliding hole is provided on the side wall of the moving block between the upper and lower nozzles. An automatic cutting mechanism is provided between the sliding hole and the slider. The automatic cutting mechanism includes a sliding rod, which is slidably mounted within the sliding hole. Both ends of the sliding rod extend outside the sliding hole, and the rod wall has a strip-shaped hole. This utility model can automatically cut filamentous materials when switching between different lower nozzles, achieving a high degree of automation and reducing the labor intensity of workers.

A method for manufacturing a dental prosthesis (2), which is provided with a number of matrix elements (18) corresponding to one of the matrix elements (14) in each case for removable fixation on a number of teeth (6) crowned with a respective male element (14) in the mouth of a patient, should be designed for a particularly high accuracy of fit of the dental prosthesis (2) using methods which are kept as simple as possible. According to the invention, multi-part matrix elements (18) are used for this purpose, each comprising an inner cap (32) which can be slipped onto the associated male element (14) and an outer cap (34) which is attached to the dental prosthesis (2), wherein in the space between the inner and outer caps (32, 34), an intermediate body (36) made of thermoplastic material connecting them to one another being arranged in the space between the inner and outer caps (32, 34), the intermediate body (36) being heated to a temperature above its softening temperature and thus being made deformable in order to align the inner cap (32) precisely relative to the outer cap (34) of the respective matrix element (18), and then, using the deformability of the intermediate body (36), the inner cap (32) is aligned relative to the outer cap (34) with regard to an optimized accuracy of fit, taking into account intraoral data reflecting the actual dentition situation in the oral cavity of the patient, before the relative position of the inner cap (32) set in this way relative to the outer cap (34) is preserved as a result of the solidification of the intermediate body (36) occurring during the subsequent cooling of the intermediate body (36).

This application discloses a dental prosthesis and its fabrication method. The method includes: fabricating a gold alloy inner crown using a lost-wax casting process; fabricating a glass-ceramic outer crown using 3D printing or CAD / CAM cutting equipment; sequentially performing surface sandblasting, applying a metal surface treatment agent, and applying a light-curing adhesive on the bonding surface of the gold alloy inner crown; treating the bonding surface of the glass-ceramic outer crown with acid etching and a silane coupling agent; and finally bonding and fixing the glass-ceramic outer crown to the gold alloy inner crown using adhesive resin. This application uses a cold bonding system to achieve the molding of the gold alloy inner crown and the glass-ceramic outer crown, replacing the traditional high-temperature sintering process. This eliminates the potential for thermal stress at the source, avoiding problems such as porcelain chipping, inner crown oxidation, and edge deformation caused by high temperatures, while preserving the mechanical properties of the gold alloy and the aesthetic properties of the glass-ceramic.

This invention provides a method for implanting a dental prosthesis, comprising: a first step of setting multiple implantation information along the dental arch in a three-dimensional planning image; a second step of flattening the alveolar bone and implanting the dental implants, and fixing a support device including a support abutment and a fixing rod to the upper side of the dental implants; a third step of modifying a temporary prosthesis to form a temporary mounting portion for inserting the support device on the inner surface of the temporary prosthesis; a fourth step of acquiring a modified scan image from the modified temporary prosthesis scan image in which the three-dimensional shape information of the temporary mounting portion is exposed externally, and exchanging the three-dimensional shape information of the temporary mounting portion with the virtual support device; and a fifth step of fixing the artificial tooth portion to the artificial gingiva to manufacture the final dental prosthesis, wherein the artificial gingiva portion has a mounting portion formed based on the virtual support device and is fixed with clips.

A kind of virtual try-on system of dental prosthesis based on three-dimensional scanning, it relates to the field of dental prosthetics;Extract a plurality of facial points and its displacement trajectory information, output the classification result representing the type of facial point, obtain the stability score of facial point in different preset time window, extract the stable interval of jaw position and obtain the jaw position information, and generate the try-on model in combination with the maxillary model, the mandibular model and the prosthesis model, obtain the contact change rate of the try-on model and judge whether it is less than the change threshold, if not, adjust the prosthesis model until it is less than the change threshold;It has the advantages of effectively reducing the interference of soft tissue relaxation on jaw position judgment, improving the accuracy of jaw position information extraction and improving the reliability of prosthesis design.

Maxillofacial Polyvinyl Chloride (PVC) Flask for Dental Prosthesis

This invention discloses a virtual fitting system for dental prostheses based on 3D scanning, belonging to the field of digital dental prosthodontics. It includes a data acquisition module, a trajectory processing module, a model construction module, a fitting simulation module, and an anomaly optimization module. Through 3D scanning and automated point cloud processing, it can quickly acquire high-precision 3D models of the maxillary and mandibular dentition, providing reliable data support for prosthodontic design. Optical motion capture fully reproduces the patient's physiological mandibular movements, overcoming the limitations of existing systems that can only perform static simulations, making occlusal detection more clinically accurate. A unified reference coordinate system is established to achieve precise model registration, controlling prosthodontic positioning errors within 0.01mm, significantly improving fit. It can automatically identify premature contacts and occlusal interferences and perform intelligent optimization of the occlusal surface, replacing repeated manual adjustments, effectively shortening the treatment cycle, improving prosthodontic accuracy and wearing comfort, and enhancing the overall treatment experience.

The present invention relates to a dental prosthesis having a structure similar to a natural tooth and a method for manufacturing the same, and discloses a dental prosthesis which is a solidified product containing ceramic particles dispersed in a polymer matrix, and a method for manufacturing the same using a 3D printing method, the dental prosthesis comprising: a first solidified product layer having a content of ceramic particles of 70 to 90 wt%, and an average particle diameter of the ceramic particles of 100 to 1000 nm; and a second solidified product layer which is adjacent to an inner side of the first solidified product layer, has a content of ceramic particles of 40 to 60 wt%, and an average particle diameter of the ceramic particles of 10 to 500 µm. Thus, the dental prosthesis exhibits a structure similar to a natural tooth, i.e., exhibits a structure and physical properties similar to a natural tooth having a surface of enamel and an interior of dentin.

A dental prosthesis includes one or more implants, a base member including an upper surface and a lower surface opposite the upper surface, the base member positionable on the one or more implants, a plurality of artificial teeth mounted to the upper surface of the base member, one or more retention arms engaging the one or more implants when the one or more retention arms are in an engaged position, and a locking member including one or more fingers movable between a locked position in which the one or more retention arms are inhibited from moving from the engaged position to a disengaged position and an unlocked position in which the one or more locking are permitted to move into the disengaged position from away from the one or more implants.

To provide a dental porcelain composition that can be used for a dental prosthesis device, particularly a dental prosthesis device made of ceramics, glass-ceramics, or glass, does not require skilled techniques, suppresses dripping during technical work and a sink mark after firing, and exhibits excellent aesthetic property after firing and a manufacturing method thereof. To provide a dental porcelain composition comprising (A) glass and (B) organic solvent having a boiling point of 100 to 300° C., wherein the (A) glass includes (A-1) base material glass having a particle diameter D50 of 2 to 8 μm and (A-2) base material glass having a particle diameter D50 of 25 to 45 μm, and a particle diameter of the glass (A) satisfies D10≤5 μm, 5 μm<D50<28 μm, and 28 μm≤D90.

This utility model discloses a dental prosthesis model grinding device, relating to the field of dental prosthesis model grinding technology. It includes a collection component for collecting dust and debris generated during grinding, and a protective component for intercepting flying debris. This utility model, by incorporating an angle-adjustable protective component, allows for adjustment of the transparent baffle's tilt angle to accommodate the viewing angle of technicians of different heights. Furthermore, the folding of the transparent baffle facilitates compact storage and transfer, while its full unfolding allows for easy cleaning of the surface near the grinding area. Additionally, the C-shaped sleeve and arc-shaped groove structure ensures the transparent baffle can rotate at large angles while also providing a seal for the rotation area, maintaining good protective performance at any tilt angle.

1. Name of the product in this design: Dental prosthesis processing machine. 2. Purpose of this design: For processing dentures. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

1. Name of the product in this design: Dental Prosthesis Machining Center (5-axis). 2. Purpose of this design: This design is used for the manufacture of dentures. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

This utility model relates to the field of dental prosthesis processing technology and discloses a manual grinding and rotating support for dental prosthesis processing. It includes an operating plate, a fixed plate fixedly mounted on the top of the operating plate, a rack plate fixedly mounted inside the operating plate, a clamping plate slidably mounted on the top of the operating plate, a protective pad fixedly mounted on one side of the clamping plate, a first slider fixedly mounted on the bottom of the clamping plate and slidably mounted inside the top of the operating plate, a fixed rod fixedly mounted on one side of the clamping plate, a fixed rod slidably mounted on the outside of the fixed rod and one end of the fixed rod engaging with the rack plate, and a support structure at the bottom of the operating plate. When grinding, the support is placed on top of the operating plate, and then the clamping plate is slid to clamp and limit the denture. Then, a pin plate is slid downwards to engage with the rack plate at its bottom end, thereby limiting the clamping plate and facilitating clamping. Grinding is then performed by the operator.

A multi-piece dental prosthesis system is provided. The system includes an implant that can be inserted into the patient's bone, an abutment that connects to the implant with a prosthetic screw, and a titanium base that also connects to the abutment. The system can be used to support a crown, a complete denture, or a partial denture.

1. Name of the product in this design: Dental Ceramic Engraving Machine (52D). 2. Purpose of this design: For use in dental prosthesis carving. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. Since this is not commonly used, the bottom view is omitted. 6. Other situations requiring explanation: The white area marked A in the 3D view and main view is the visualization window.

This utility model discloses a T-shaped glass-ceramic block and titanium pillar clamp specifically for a dental prosthesis engraving and milling machine. It includes a T-shaped clamp body and a mounting base. The top and bottom surfaces of the horizontal branches of the T-shaped clamp body are symmetrically provided with several sets of top hole sequences and bottom hole sequences. Each set of top hole sequences is arranged in the order of glass-ceramic block fixing holes, titanium pillar fixing holes, and titanium pillar screw holes; each set of bottom hole sequences is arranged in the order of glass-ceramic block fixing holes, titanium pillar screw holes, and titanium pillar fixing holes. A corresponding glass-ceramic block positioning pin is installed next to each glass-ceramic block fixing hole. Each titanium pillar screw hole is interconnected with the symmetrical titanium pillar fixing holes. The front of the horizontal branches of the T-shaped clamp body has two symmetrical rows of glass-ceramic block screw holes. The upper row of glass-ceramic block screw holes is interconnected with the corresponding glass-ceramic block fixing holes in the top hole sequence; the lower row of glass-ceramic block screw holes is interconnected with the corresponding glass-ceramic block fixing holes in the bottom hole sequence. This improves the clamp's functionality and increases work efficiency.

Dental implant (1) for anchoring of a dental prosthesis, wherein the dental implant (1) has a core (10) and an external thread (3) surrounding the core (10), wherein the dental implant (1) has an apical end (11) and a cervical end (12) to be screwed by means of the external thread (3) with the apical end (11) first into a recess formed in a jaw bone and to anchor the dental prosthesis at the cervical end (12), wherein the dental implant (1) consists of material which contains or consists of a metal or a metal alloy, wherein the core (10) has a bulge (A) in the middle area (4) in any cross-section passing through the entire length of the longitudinal axis (L) of the dental implant.