32 results about "Prosthodontics" patented technology

System and method for developing a treatment plan for achieving a treatment goal including creating a virtual model of a dental patient's dentition; transforming the virtual model of the dentition using virtual prosthodontics to facilitate achievement of the treatment goal; transforming the virtual model of the dentition using virtual orthodontics to facilitate achievement of the treatment goal; iterating on the transforming steps until substantially achieving the treatment goal; and generating an orthodontic treatment plan and a prosthodontic treatment plan based upon the substantially achieved treatment goal

System and method for developing a treatment plan for achieving a treatment goal including creating a virtual model of a dental patient's dentition; transforming the virtual model of the dentition using virtual prosthodontics to facilitate achievement of the treatment goal; transforming the virtual model of the dentition using virtual orthodontics to facilitate achievement of the treatment goal; iterating on the transforming steps until substantially achieving the treatment goal; and generating an orthodontic treatment plan and a prosthodontic treatment plan based upon the substantially achieved treatment goal

A denture liner which includes a hydrophobic polymer component, a plasticizer component and an adhesive component. A method for making this denture liner and a denture liner kit are also provided. The compositions have improved consistency and are useful in prosthodontics, including formulating denture liners for the compositions have a glass transition temperature lower than the lower of an ambient temperature at which the liner is applied and a temperature inside the oral cavity. Phthalate-free embodiments, as well as kits are also described.

The invention is a three dimensional virtual articulator used for but not limited to diagnosing and treatment planning for dental and medical specialties, including orthodontics, prosthodontics, endodontics, periodontics, orthognathic surgery, implant positioning, crown and bridge and prosthesis design.The operator enters patient-specific anatomical measurements for condylar angles, Bennett angle and shift, lateral excursive and protrusive movements, and maximum mandibular opening, and a selection of preset or customizable intercondylar distances to simulate the unique mandibular range of motion.The patient-specific measurements create a customized complex polygon that illustrates the maximum limits of the mandibular range of motion. The operator is able to use onscreen controls to move the virtual mandible in relation to the virtual maxilla within the parameters described by the patient-specific measurements input by the operator.The first point of contact as well as surface interferences can be marked on the dynamic surfaces of the two virtual arches.

The present invention discloses a set of dental arches comprising: an upper arch (1) formed by upper anterior (2) and posterior (3) artificial teeth and another lower arch (5) formed by lower anterior (6) and posterior (7) artificial teeth mounted in an orderly fashion on flexible bases (4) and (8) constructed of elastomeric resin in the form of an arch, having a three-dimensional movement capacity to enable adaptation to the anatomy and physiology of edentulous patients; the base material also allows the adjustment of each tooth individually, through changes of position, inclination or alignment, in a simple manner, thus producing custom prosthodontics; its use in the confection processes of removable complete and partial dentures saves time, labor and cost compared to traditional methods.

The invention relates to the field of prosthodontics and discloses a supporting structure for manufacturing a dental department additional material. The supporting structure comprises a tree-shaped supporting part and a slice grid supporting part which are respectively located at the upper and lower parts, wherein the tree-shaped supporting part comprises trunks and branches, the trunks are connected with the slice grid supporting part, and the branches are located on the trunks; and the slice grid supporting part is a grid structure formed by slices. The supporting structure has the advantages that (1) the supporting strength can be well guaranteed by virtue of the grid structure; (2) tree-shaped thin rods are arranged at the upper supporting part and can be conveniently removed in the subsequent period; (3) the lower supporting part is of a stepwise grid shape, so that the use amount of powder is reduced to a certain extent; and (4) the slice grid-shaped supporting structure is particularly suitable for parts which are very high in refine degree and have multiple free curved surfaces.

The invention discloses an automatic denture neck edge line extraction method based on DBSCAN clustering. The method comprises steps: feature extraction is carried out on a to-be-extracted object, anda feature area of the to-be-extracted object is obtained; a DBSCAN clustering method is adopted in the feature area of the to-be-extracted object to automatically recognize a neck edge feature area;an improved morphology method is adopted to process the neck edge feature area to obtain a neck edge line, wherein the improved morphology method enables broken neck edge feature areas to be communicated and enables an open loop feature line in the neck edge feature area to be closed. The neck edge feature area is recognized automatically through DBSCAN clustering, thereby eliminating interferencefrom a top feature area and other noise; the improved morphology method is adopted to process the neck edge feature area to obtain the neck edge line, and the method can be ensured to reliably extract a reasonable neck edge line; and the whole extraction process does not need interaction operation, the intelligent degree is high, and the robustness is good. The method of the invention can be widely applied to a prosthodontics field.

Diamond burs for dentistry are especially useful in application to porcelain and ceramics. Burs manufactured using a synthetic diamond grit of the type MBG® demonstrate exceptional useful properties in working with porcelain and hard ceramics including zirconia prosthodontics.

The invention relates to a gypsum-free novel digital post-core impression collection and model building technology, and belongs to the technical field of post-core restoration of prosthodontics. The technology comprises the steps as follows: making local impression of a diseased tooth and performing optical scanning to obtain complete post canal information; performing optical scanning on the dentition and occlusion relationship in the mouth of a patient to obtain a digital model of the abutment crown shape, dentition and occlusion relationship; and matching the digital model established by optical scanning of the traditional post-core impression with the established dentition digital model to obtain the dentition and occlusion relationship model containing the complete post canal information, and performing subsequent design and processing of the root post and crown core. The defect that the complete post canal information cannot be obtained by direct oral scanning is avoided, and thedefect that complete crown information cannot be obtained when the abutment crown grows up and post-core impression is scanned is also avoided. The digital model obtained based on the technology canbe used for computer aided design, and then combined with 3D printing or CAD / CAM technology to achieve stable and accurate digital machining.

The invention discloses a tooth implant bone meal filler for oral restoration. The bone meal filler includes: a filling tube, the filling tube includes a tube body, a connecting tube, a powder feeding tube and a ring, and the bottom surface of the connecting tube is relatively The large side is fixedly connected to one end of the tube body, the smaller side of the bottom surface of the powder inlet tube is connected to the side of the tube body away from the connecting tube, and the two rings are symmetrically fixedly connected to both sides of the tube body near the end of the powder inlet tube; A powder pushing device, the powder pushing device includes a cover, a push rod, a piston, a pressure ring and a finger block, the cover is screwed to the end of the powder inlet tube away from the tube body, and the push rod is slidably inserted in the sliding hole Inside, the piston is fixedly connected to one end of the push rod, and the pressure ring is connected to the end of the push rod away from the piston; the detachable filling device includes a detachable pipe, a threaded connection ring and a filling head. The invention reduces the use cost of the bone powder filler, and at the same time improves the overall use efficiency of the bone powder filler.

A device for preparing, fitting, and placing periodontal prosthodontics having a finger covering and an attached bilayered adhesive patch, wherein the bilayered adhesive patch comprises two separable layers joined by a weak adhesive and one external side of the bilayered adhesive patch is attached by a strong adhesive to the finger covering while the other external side of the bilayered adhesive patch has a layer of pressure sensitive adhesive.

The invention discloses 3D printing metal powder for dental movable prosthodontics and a preparation method thereof. The 3D printing metal powder for dental movable prosthodontics comprises the following raw materials of, in parts by mass, 20-30% of Cr, 5-10% of Mo, 1-5% of Ag, less than or equal to 0.5% of Fe, less than or equal to 0.5% of Mn, less than or equal to 1.0% of Si, less than or equalto 0.05% of Ni, less than or equal to 0.3% of C, less than or equal to 0.02% of Be, less than or equal to 0.02% of Cd and Co matrix. The preparation method of the 3D printing metal powder for dental movable prosthodontics comprises the following specific steps that 1) smelting is conducted, specifically, prepared chemical components are proportioned, a master alloy ingot is prepared through vacuuminduction smelting, and the defect of shrinkage cavity is removed; and component homogenization heat treatment is performed on the master alloy ingot by adopting a vacuum heat treatment furnace; 2) powder preparation is conducted through atomization; 3) screening is conducted, specifically, prepared alloy powder is screened through an ultrasonic vibrating screen under the protection of inert gas;and 4) selective laser melting (SLM) forming is conducted. According to the 3D printing metal powder for dental movable prosthodontics and the preparation method thereof, the performance requirementsof the movable prosthesis are met, and antibacterial property are achieved.

The invention belongs to the field of prosthodontics and repair processes, and discloses an integrated telescopic crown retainer based on 3D printing and a manufacturing method thereof. According to the manufacturing method of the telescopic crown retainer, a full-crown form is firstly generated according to set secondary crown parameters, and then the secondary crown is formed through back-cutting so that ceramic layers on the secondary crown and the subsequent secondary crown have enough thickness and better forms, the accuracy and the stability of combination of the primary crown and the secondary crown are ensured, the pre-designed full crown form is also beneficial to subsequent processing and manufacturing, and the final telescopic crown retainer finished product can better produce normal functions of teeth; and the secondary crown is designed firstly, and then a telescopic crown retainer bracket is designed so that the accuracy of the relative position and the connection stability of the telescopic crown retainer bracket and the secondary crown can be ensured.

The invention discloses a titanium-molybdenum-zirconium metastable beta titanium alloy surface modification method, and relates to the technical field of medical metal material surface functional modification. The method comprises the following steps: firstly, carrying out acid etching treatment on titanium-molybdenum-zirconium metastable beta titanium alloy, then putting the titanium-molybdenum-zirconium metastable beta titanium alloy into a mixed aqueous solution of H2O2 and H3PO4 for hydrothermal reaction, and finally preparing surface-modified titanium-molybdenum-zirconium metastable beta titanium alloy by controlling reaction conditions. According to the method, the main inorganic component P element of bone is successfully doped into the Ti-Zr-Mo alloy, so that the prepared titanium alloy material has low elastic modulus and high surface bioactivity, is free of biologically toxic elements, and has wide application prospects in the fields of clinical prosthodontics, implantation, orthodontics, hard tissue repair and the like.

The invention discloses a metal post nail fixing device for the department of prosthodontics. The metal post nail fixing device for the department of prosthodontics comprises a cylinder; a storage battery is mounted at the right end of the outside surface of the cylinder; a control switch is mounted on the side surface of the storage battery; an input end of the control switch is electrically connected with an output end of the storage battery; a left opening of the cylinder is connected with a cavity pipe. The metal post nail fixing device for the department of prosthodontics is simple in structure and convenient to hold, and can drive a metal post nail into a tooth socket; tapping power can be provided by utilizing a servo motor; the rotating speed is controlled precisely and stably; soft tissue clamping and a rejection reaction caused by improper speed control in a manual operation are avoided; a clamping plate can support a rod part of the metal post nail and is recycled after thetip of the nail is screwed into the tooth socket; rod part movement caused when a nail cap of the metal post nail is stressed is avoided; the aperture of a hole is effectively prevented from being greater than the metal post nail; the stability after the metal post nail is fixed is improved; required correcting and supporting effects are ensured; the metal post nail fixing device for the department of prosthodontics is convenient to use.

The invention discloses an anti-scald wax rim fixer special for prosthodontics. The anti-scald wax rim fixer comprises an outer shell with hollow interior and two opening ends; a cheek retractor is arranged on the exterior of the shell; the cheek retractor is connected with the shell; a piston is arranged in the shell; the piston is capable of moving in the shell along the axis direction of the shell; a heating head is fixed at the bottom of the piston; the heating head extends out of the shell; an elastic resetting device is sleeved on an outer wall of the heating head; the elastic resettingdevice is arranged in the shell and is located under the piston. According to the invention, a wax spatula is heated to 75 DEG C under constant temperature, so that the wax rim is prevented from excessively melting under ultrahigh temperature, scalding the patient by the flowing liquid wax or generating wax smoke; the cheek retractor is arranged on the periphery of the heating part and is capableof pulling the lips and preventing the lips from scalding; the heating part is arranged in a temperature-insulating pipe; the heating head can stretch out after the heating part is pressed; the heating part can be pressed and fixed after the stable heating position is accurately located; the sliding operation is not required, so that the scald caused by improper operation of the doctor or the lipmotion of the patient can be avoided.

An apparatus and method for use in the field of orthodontia and dental prosthodontics for registering 3D measurement data of a jaw model having a lower jaw model and an upper jaw model in a cranial-referenced coordinate system. The method and apparatus establish a spatial relationship between a cranium and the measurement data of the jaw models obtained from optical scanners. This is implemented by determining the spatial relationship between a paraocclusal spoon or a bite fork and jaw joints using a computer aided registering system, and by determining the spatial relationship between the paraocclusal spoon or the bite fork and the jaw model which provides locatable structures whose spatial relationship to the paraocclusal spoon or the bite fork is known.

The invention discloses a local deformation method of a denture surface based on topology reconstruction, comprising the following steps: A. calculating the influence area of ​​a drag point according to denture model data; B. deleting the drag point in the influence area of ​​the drag point The topological information of all points other than the hole is formed to form a hole, and the information of all points on the hole boundary is stored; C. According to the drag point and the above hole boundary point information, the hole is repaired through the deformation operation. The method of the present invention uses the projection distance as the topological distance on the denture model, which is closer to the projection distance of the real topological distance, and uses the interpolation method to reconstruct the topology as the result of local deformation, completely avoiding the self-intersection of the triangular mesh of the denture model question. As a local deformation method of the denture surface based on topology reconstruction, the invention can be widely used in the field of denture restoration.

Metal titanium and titanium alloy are widely applied to implants of oral prosthodontics, orthopedic surgery and plastic surgery at present, but have the problems of having poor osseous integration capability and being prone to have bacterial infection after implantation. The invention discloses a titanium and titanium alloy surface micro-nano structure modification method, and aims to improve theosseous integration capability and antibacterial capability of titanium and titanium alloy surfaces. The micro-nano structure modification method is characterized in that a femtosecond laser processing technology is adopted, the polished titanium alloy surface is ablated to form a micropost periodic structure with the spacing and the depth not greater than 200 microns, nanotubes with the diameterssmaller than 200 nm are prepared on the micropost periodic structure in an anodic oxidation mode after further acid pickling, and then annealing heat treatment is carried out to obtain a final sample. According to the method, the surface with a micro-nano structure can be prepared on the titanium and titanium alloy surfaces, and the titanium and the titanium alloy with such surfaces have good biocompatibility and antibacterial capability.

The invention relates to a metal post pin removing device for the department of prosthodontics. A special mouth gag is designed, illumination and shooting in multiple directions can be provided, and operation of dentists is greatly facilitated; an operating handle is provided with an ultrasonic transducer, and the transducer can perform ultrasonic oscillation, so that a metal post is loosened under ultrasonic vibration and is easier to take out; the integrated operation handle is arranged, the side wall of the metal post can be perforated during vibration, ultrasonic contact efficiency is improved after perforation and operation time is shortened; multiple functions of perforation, grinding, clamping and ultrasonic vibration can be achieved by one operating handle, multiple types of operation can be conducted for different metal posts, efficiency of taking out the metal posts is greatly improved, and damage is reduced.

The invention discloses a metal post pin fixing device for the prosthodontics department. The metal post pin fixing device comprises a tooth holder; the tooth holder is in an arc shape; a tooth socketvertically through is formed in an inner cavity of the tooth holder; a plurality of screw holes are formed in each of the front side and the rear side of the outer wall of the tooth holder equidistantly; an arc-shaped sliding groove is formed in the inner wall of the tooth socket in the left-right direction; a hollow box is assembled in an inner cavity of the tooth socket; a rolling wheel embedded in an inner cavity of the arc-shaped sliding groove is assembled on the outer wall of the hollow box; and a feeding mechanism is detachably assembled at the top end of the hollow box. According to the metal post pin fixing device, a metal post pin can be fixed through a fixing unit, and can be installed on the hollow box; a housing is installed on a fixing unit to make a polygonal rod correspondto a polygonal hole in the metal post pin; the feeding mechanism makes the metal post pin rotate around the metal post pin and move downwards to enter a false tooth, and the metal post pin is convenient to screw in; and the metal post pin fixing device not only is time-saving and labo-saving, but also is not prone to incline, thus guaranteeing the fixing and correcting effect.

The invention belongs to the field of medical equipment, in particular to a device for removing metal studs in dental prosthetics. The existing metal stud removal equipment needs manual operation, and manual hand-held instruments are difficult to stabilize the position directly, and the position is prone to shift, which is harmful to patients. The damage is very serious, the following scheme is proposed, which includes a support frame, a fixing groove is opened on the top of the support frame, a threaded rod is slidably installed in the fixing groove, a drive nut is threaded on the threaded rod, and the top of the threaded rod A mounting plate is fixedly installed, and an adjustment slot is opened on the top of the installation plate, and an adjustment column is installed rotatably in the adjustment slot, and a connection slot is opened at one end of the adjustment column, and a telescopic column is slidably installed in the connection slot. The invention has reasonable structure and convenient operation. The removal device can automatically remove the metal studs, and can stabilize the position during the removal, is less prone to position deviation, and causes less harm to patients.

The invention relates to a metal post pin removing device for the department of prosthodontics. A special mouth gag is designed, illumination and shooting in multiple directions can be provided, and operation of dentists is greatly facilitated; an operating handle is provided with an ultrasonic transducer, and the transducer can perform ultrasonic oscillation, so that a metal post is loosened under ultrasonic vibration and is easier to take out; the integrated operation handle is arranged, the side wall of the metal post can be perforated during vibration, ultrasonic contact efficiency is improved after perforation and operation time is shortened; multiple functions of perforation, grinding, clamping and ultrasonic vibration can be achieved by one operating handle, multiple types of operation can be conducted for different metal posts, efficiency of taking out the metal posts is greatly improved, and damage is reduced.

The invention discloses a bone tissue repair material and a preparation method and application thereof. In a liquid phase system of pH=10-12, a soluble calcium salt with a molar ratio of Ca to P of 5:3 and a soluble phosphate or phosphoric acid are naturally An in-situ co-precipitation reaction occurs on the polymer A, and the precipitate is dried and ground to form hydroxyapatite-natural polymer A nanocomposite particles; the hydroxyapatite-natural polymer A nanocomposite particles are mixed with natural high The solution of molecule B is evenly mixed and then placed in a mold for vacuum freeze drying, and then soaked in absolute ethanol and dried to obtain a bone tissue repair material. The bone tissue repair material is loose and porous, hydroxyapatite is not easily leaked from the bone tissue repair material, has good water absorption, is soft and elastic after water absorption, and can be used for common bone defects in oral implantology, prosthodontics, orthopedics and other surgeries Repair; the preparation method is easy to operate, easy to automate, clean reagents, and low cost.

The invention discloses a dilation and support multipurpose device for pediatric oral repair and relates to the field of medical equipment. The dilation and support multipurpose device comprises a fixing frame, a vertical-moving clamp plate set and a mouth telescoping control mechanism and is characterized in that the vertical-moving clamp plate set is arranged at the front end of one side of thefixing frame, the mouth telescoping control mechanism is arranged on one side of the vertical-moving clamp plate set and fixedly connected with the fixing frame through a connecting support, binding straps are fixedly connected to one side of the fixing frame and the other side of the connecting support, the vertical-moving clamp plate set comprises an upper clamp plate, an upper fitting plate, anupper tooth support plate, a lower clamp plate, a lower fitting plate and a lower tooth support plate, the lower clamp late is arranged at the bottom of the upper clamp plate, the upper fitting plateis fixedly arranged at one end, close to the fixing frame, of the upper clamp plate, and the upper tooth support plate is fixedly arranged on the inner side of the bottom end of the upper fitting plate. By the dilation and support multipurpose device, the problems that a child easily spits a mouth gag in the prior art when the child resists the mouth gag, and mouth fatigue cannot be relieved after long-term use of the mouth gag.

The invention discloses a metal post nail fixing device for the department of prosthodontics. The metal post nail fixing device for the department of prosthodontics comprises a cylinder; a storage battery is mounted at the right end of the outside surface of the cylinder; a control switch is mounted on the side surface of the storage battery; an input end of the control switch is electrically connected with an output end of the storage battery; a left opening of the cylinder is connected with a cavity pipe. The metal post nail fixing device for the department of prosthodontics is simple in structure and convenient to hold, and can drive a metal post nail into a tooth socket; tapping power can be provided by utilizing a servo motor; the rotating speed is controlled precisely and stably; soft tissue clamping and a rejection reaction caused by improper speed control in a manual operation are avoided; a clamping plate can support a rod part of the metal post nail and is recycled after thetip of the nail is screwed into the tooth socket; rod part movement caused when a nail cap of the metal post nail is stressed is avoided; the aperture of a hole is effectively prevented from being greater than the metal post nail; the stability after the metal post nail is fixed is improved; required correcting and supporting effects are ensured; the metal post nail fixing device for the department of prosthodontics is convenient to use.