31 results about "Prosthodontics" patented technology

Novel prosthetic teeth constructed using moldable, micro-filled composite resin, and a novel method for making and bonding the same onto implants in a patient's mouth. The teeth are prepared and seated in the patient's mouth using materials and methods that are known and widely available. The present invention may be applied to any situation in which one or more replacement teeth are required, including full-arch replacement for upper and/or lower teeth.

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

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 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 denture construction teaching tool is an educational tool for instructing students on the molding process used to construct removable dental prosthodontics. The denture construction teaching tool includes a base having opposed upper and lower surfaces, and a spacer block releasably secured to the upper surface of the base. A set of tooth molds are releasably secured to the upper surface of the base about the spacer block. Each of the tooth molds has an injection port and a venting port formed therethrough. Each tooth mold further has a lower molding portion and an open upper portion. A removable lid releasably covers the open upper portions of the set of tooth molds, such that a molding material may be injected through the injection ports of the set of tooth molds with excess molding material exiting through the respective venting ports.

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 relates to a prosthodontics support comprising a support body, implantation nails and retention nuts. The support body includes a retention section and supporting sections arranged at the two ends of the retention section; and the retention section includes a fixed clamp ring. Mounting holes are formed in the supporting sections. The implantation nails have revolving body structuresand match the mounting holes; the implantation nails have mounting sections, closed sections and bone grafting sections that are formed successively from top to bottom. The retention nuts match external threads on the surfaces of the mounting sections. According to the invention, the support is fixed by implanting the implantation nails, thereby reducing the injuries of patients and improving theretention stability of the support; a non-acting support area only for retention is greatly reduced, so that the prosthodontics support becomes small and exquisite and thus the discomfort of the patient is reduced; and on the basis of the detachable design, the patient can tank down the support for cleaning or replacement if necessary.