62 results about "Removable dentures" patented technology

A removable denture system comprising a support beam fixedly attached to the individual's alveolar ridge above the mucous membrane by a plurality of dental implants, and a denture generally conforming with the dental parameters of the individual and integrated with a supper-structure. The supper-structure comprises at least a portion shaped in confirmation with the support beam, and a denture locking arrangement for removably though fixedly articulating the denture to the support beam preventing unintentional disengagement of the denture.

A dental implant apparatus consisting of an auger-like lower threaded portion that is screwed into the bone. It includes a divergent intermediate collar with mini-threads for engaging the cortical bone, and a tapered abutment for fixed tooth replacement or a ball-like snap attachment to secure removable dentures. The apical end of the device has a tapered portion with a blunt tip that condenses the medullar bone, which in combination with the divergent collar engaging and wedging into the cortical bone, provides a dual stabilization structure that can be immediately loaded or placed in light function by cementing on a temporary crown or bridge or by lightly attaching a removable full or partial denture.

A removable denture includes a denture base that is made of ultrahigh molecular weight polyethylene and is formed in a predetermined shape by a molded object of ultrahigh molecular weight polyethylene being cut; and artificial teeth that are arrayed at the denture base.

The invention relates to a manufacturing method of removable dentures. Currently, the removable-denture manufacturing methods in all countries in the world are a thermos-coagulation packing method, need steps such as casing, filling, squeezer pressurizing and water bath polymerization (dental cast cooking pot), are complex in process, time-consuming and labor consuming, are non-uniform in moldingcase pressurizing and are difficult in precise mastering and control of heating speed and heating maintaining time during heat processing. The method has the advantages that the manufacturing flow oftraditional removable dentures is improved, joint height increasing and contraction bubbles of the removable dentures manufactured by the traditional manufacturing process are avoided, and the base-material filling of the partial removable dentures and attachment dentures can be performed; the models of the attachment dentures does not need to be pressurized on a squeezer, and the subfissure or deformation of the fixing-part porcelain teeth of the attachment dentures is avoided.

Provided is a removable denture system including a personalized support beam configured to be fixedly attached to an individual's jaw bone by plurality of dental implants; personalized denture conforming with dental parameters of the individual including bottom surface shaped and sized to constitute a super-structure configured for cooperating with the support beam; and denture locking arrangement for securely locking and unlocking the denture to the support beam, one of the support beam and the super-structure includes one or more positioning grooves extending parallel to a path of insert (POI) of the denture, and the other of super-structure and the support beam, includes one or more corresponding laterally projecting positioning projections, each positioning projection configured to cooperate with a corresponding positioning groove, and configured to provide at least partial snug fit together, the support beam and super-structure are configured to eliminate movement when the super-structure is assembled over the support beam.

The invention discloses a removable denture laser processing device. The removable denture laser processing device comprises a laser device, a workpiece clamping and moving device and a computer 2. The laser device comprises a laser 1, a reflecting mirror 7 and a focusing lens 8, and light emitted by the laser is reflected by the reflecting mirror 7 and then focused by the focusing lens 8. The clamping and moving device comprises a single-shaft direct-driven rotating table 3, a worktable 4, a four-jaw chuck 5 and a workpiece fixture 6, wherein the four-jaw chuck 5 is connected with the single-shaft direct-driven rotating table 3 fixed on the worktable 4, and the workpiece fixture 6 is fixed on the four-jaw chuck 5. The computer 2 is in signal connection with the laser 1, the single-shaft direct-driven rotating table 3 and the worktable 4. The removable denture laser processing device has the advantages of high cutting speed, high efficiency, low cost, smooth cutting face, no burr, no contact with processed workpieces, no pollution to the workpieces, avoidance of causing mechanical squeezing or mechanical stress to materials and little material deformation.

A method and apparatus for making a denture base disc that is used subsequently to form a removable denture. A vessel with an elastomeric lining is used to form the denture base disc so that the compression of the elastomeric material is approximately equivalent to the shrinkage of the denture base disc material during its polymerization. The vessel and elastomeric lining contained therein work cooperatively to cause the denture base disc to cure in a homogenous manner with consistent pressure on all sides so that residual stresses in the finished disc are minimized.

The invention discloses a digital integrated forming method of a false tooth attachment. The digital integrated forming method includes the following steps of 1, three-dimensional laser scanning; 2, data acquisition and processing; 3, 3D printing forming of the false tooth attachment. In the first step, according to an anterior tooth region implant fixing bridge, an extracoronal elastic attachmentfemale part, a posterior tooth region removable denture and an extracoronal elastic attachment male part which are made by an edentulous jaw model, a plaster model is prepared, white developing powder is sprayed to the metal portion of the model, a fixing bridge model is put on a laser scanner rotary table, a non-contact type three-dimensional analog converter is switched on, a horizontal laser beam is emitted to scan the plaster model, the scanning range is determined, after one face is scanned, the rotary table rotates by 90 degrees, and the other regions are scanned. After reconstruction is completed, images are clear, nest ditch pits and the attachment are accurate in structure, no obvious scanning blind region exists, convenience and rapidness are achieved, the false tooth attachmentis rapidly formed, and high efficiency is achieved.

The invention discloses a combined guide plate for removable denture abutment tooth preparation and implant implantation and a manufacturing method thereof, and the manufacturing method comprises the following steps: preparing a dentition and an alveolar ridge model, and then carrying out digital scanning on the dentition, the alveolar ridge model and a dentition mouth to obtain a digital model; matching the digital model with a CBCT three-dimensional reconstruction alveolar bone model shot by a patient to obtain a removable denture base three-dimensional model; carrying out removable denture in-position path analysis and determination on the removable denture base three-dimensional model, and then manufacturing an abutment hole, a removable denture abutment preparation guide rod and an implant implantation guide ring to obtain a combined guide plate three-dimensional model; and generating the three-dimensional model of the combined guide plate through a computer, and carrying out 3D resin printing to obtain the combined guide plate for removable denture abutment tooth preparation and implant implantation. The combined guide plate prepared by the invention has the advantages of reducing abrasion among implant components, smoothly and passively positioning and taking out RPD, slowing down absorption of edge alveolar ridges and ensuring the service life of the implant in the use process.

The invention discloses a pure titanium removable denture bracket with a vitallium clasp and a preparation method thereof. The removable denture bracket comprises a bracket body, a connecting part and a clasp, wherein the bracket body is prepared from medical titanium metal. The clasp is prepared from vitallium which is cobalt-chromium-molybdenum alloy, wherein the content of cobalt is 63.4%, the content of chromium is 29% and the content of molybdenum is 5.2%. Half of the connecting part and the bracket body are integrated, while the other half of the connecting part and the clasp are integrated. The two halves are welded to connect the bracket body and the clasp. The invention further provides a method for preparing the removable denture bracket. According to the pure titanium removable denture bracket with the vitallium clasp and the preparation method, the clasp is large in elasticity, not easy to break and convenient to machine, and is free from inert gas protection.

A removable denture for an oral cavity of a human is disclosed. The removable denture includes a denture body and a supporting base. The supporting base is attached to mucosa on an edentulous alveolus and on palatine bones in the oral cavity. The denture body is joined to the supporting base. The denture body comprises a denture teeth for chewing. A central region of the supporting base is less flexible than a periphery region of the supporting base so as to maintain a high adhesion of the periphery region to the mucosa when the oral cavity is in chewing. The supporting base comprises an on-way venting device capable of improving the negative pressure effect between the supporting base and the mucosa so as to prevent the supporting base from falling off.

The present invention provides a removable full or partial denture containing a linguoplate and metal occlusion of a restoring tooth or teeth with composite facing for restoring a tooth or teeth on the dental arch of a patient, wherein the denture utilizes a metal casting having the linguoplate, and at least one denture tooth on one side of the arch, and the at least one denture tooth is an extension of the linguoplate.

This invention claims a magnetic denture or prostheses connection device. Dental implants are an improved method for tooth replacement in that their performance is more similar to natural teeth than are common plate dentures. Unfortunately the implant method is more complex and difficult to build and install. This translates to higher cost to the patient. In the industry there is a variety of mechanisms for connecting a denture to a variety of implant coupling systems. There are both removable and non-removable types. Non-removable dentures are rigidly screwed to the implants or abutments, whereas removable types use snap-together plastic clips. Removable is better from a hygienic perspective.

Current coupling and connector devices are seldom a perfect fit even after much care and effort by the installer. This puts high forces on some implants and couplers, and imperfect mating of others. Resulting wear eventually requires repair and/or replacement of connector parts. Also it is important to have forces of chewing distributed as uniformly as possible to the jaw-bone. Concentrated forces can cause stresses at the high force areas and bone degradation of areas where no, or low, force occurs.

The high magnetic force of rare earth magnets provide adequate force to retain dentures. While there are many advocates who claim that magnets attached to various body parts do wonderful things, there is no conclusive scientific evidence that verifies these claims. Likewise there is the possibility that high magnetic fields may have harmful effects. For this reason it is desirable that the magnetic fields be contained within any device that will be attached to a place in the body for a long period of time. This invention accomplishes its primary function in a superior fashion while at the same time conserving safety and general health for the applicant. Little, or no, external magnetic fields exist and are totally removed when the denture is removed. These advantages also apply to other applicable prostheses.

A positioning system is provided, comprising a support beam for attachment to an individual's jaw, and a removable denture comprising a bottom surface formed with a recess configured for receiving therein the support beam, the support beam and the recess being configured to preclude movement therebetween when the support beam is fully received within the recess. The support beam or the recess comprises one or more positioning grooves extending parallel to a path of insertion of the denture, and the other comprises one or more positioning protrusions laterally projecting therefrom and configured to be slidingly received within a corresponding positioning groove to provide at least a partially snug fit. The one or more positioning grooves and the corresponding one or more positioning protrusions are configured on one or more of a labial, lingual, or an face extending between the labial and lingual faces, of the recess and the support beam.

The invention relates to track-chain type removable denture. The track-chain type removable denture comprises an upper jaw part and a lower jaw part, wherein the upper jaw part and the lower jaw part adopt the identical overall structure and can be independently used with the single upper jaw and the single lower jaw. The track-chain type removable denture is characterized in that occlusion surfaces of denture bodies of the upper jaw part and the lower jaw part are produced according to tooth occlusion records of a patient, preferably, produced after a therapeutic occlusion pad is used for occlusal reconstruction, the thicknesses of the denture bodies of the upper jaw part and the lower jaw part are increased by 2-4 mm between the upper jaw part and the lower jaw part according to the tooth occlusion records of the patient and increased by 1-2 mm when a single jaw is used. The structure is suitable for short-time wearing, that is, the structure is suitable for being worn during dining for chewing activity and can be cleaned and disinfected for storage after being used, a single person can manufacture the track-chain type removable denture in batches to facilitate use, and the track-chain type removable denture can be worn for a long time like conventional removable denture; the problems of loss of a few teeth, tooth wearing, hemodia, oral impaction and the like can be solved, the overall chewing function is recovered, and occlusal reconstruction is performed.

The invention provides an all-ceramic removable denture structure and a manufacturing method thereof, and relates to the technical field of removable dentures. The all-ceramic removable denture structure comprises a base plate attached to an oral cavity structure, a connecting plate is fixedly connected to the top of the base plate, a plurality of positioning grooves are formed in the top of the connecting plate, artificial teeth are arranged in the positioning grooves, and a plurality of adjusting grooves in one-to-one correspondence with the positioning grooves are formed in the outer side of the connecting plate. According to the removable denture structure made of all porcelain, a movable plate is in threaded connection with a threaded rod, and the movable plate is moved under the limitation of an adjusting groove, so that a screw on a first connecting block is driven to be adjusted, an artificial tooth is moved and finely adjusted, the tooth is more fit for a user, and a connecting hole is blocked after the adjustment is completed; if abrasion occurs in the later use process, the connecting holes can be opened for adjustment, the artificial teeth are prevented from being detached, and the operation is more convenient.

The invention discloses a digital transfer method and a digital transfer system for a partial removable denture common insertion path. An optical scanning measuring instrument is adopted to obtain a patient RPD final model and a final model with a common insertion path; two final models are reconstructed into digital models, the two digital models are overlapped, bases of the two final models arecut through CAD software according to a determined common insertion path, and the axial surface directions of the final models are made to be consistent with the determined common insertion path. Themethod provided by the invention is a basic step for subsequent digital manufacturing of RPD; the common insertion path determined by a doctor is accurately transferred to a technician in a digital mode, a method for digitally transferring the common insertion path is provided for standard RPD digital manufacturing, tedious procedures of a traditional method for transferring the common insertion path are eliminated, and the manufacturing quality and stability of a restoration body are improved. Meanwhile, the clinical efficiency of repairing the patient with tooth deficiency is improved, the chair operation time of the patient is obviously shortened, and the subsequent re-diagnosis frequency caused by discomfort is reduced.

The invention discloses a removable denture. The removable denture is used for solving the problem of the prior art that a pain feel is triggered by the hard material of the removable denture during achewing process for the reason that the removable denture is directly resisted against an alveolar crest of oral cavity of a patient during a wearing process. The technical point of the invention isthat the removable denture comprises a bionic tooth and a base plate; the bionic tooth is fixed on the base plate; a fitting slot is formed on one side of the base plate away from the bionic tooth corresponding to the alveolar crest of human body; a plurality of connecting holes are formed in the fitting slot at intervals; an elastic buffering layer which is in direct contact with the alveolar crest of human body is arranged in the fitting slot; connecting bulges are arranged on the bottom of the elastic buffering layer; the connecting bulges are blocked in the connecting holes when the elastic buffering layer is jointed in the fitting slot. According to the scheme, the alveolar crest of the patient is in contact with the soft elastic buffering layer during a use process and is prevented from direct contact with the hard base plate, so that the patient can more comfortably and naturally wear the removable denture and the pain feel of the patient while chewing with the removable denturecan be effectively avoided.

The present invention concerns a new biomaterial used to manufacture antimicrobial dental devices, intended to control the growth of microorganisms in the oral cavity. These include removable dentures (RD) with copper nanoparticles technology and antimicrobial properties against dental pathogens, such as: Candida albicans, a pathogen responsible for denture stomatitis; Pathogenic Streptococcus mutans, responsible for the initiation and progression of caries formation; and Staphylococcus aureus, which causes periprosthetic infections. This removable dental material allows for the production of a new dental device to prevent and/or control oral infections caused by said pathogens, such as denture stomatitis, secondary caries, periodontal diseases, among others.

The invention discloses a wax pattern carving tool, which comprises a handle part in a shape of a hexagonal prism, wherein one end of the handle is connected with an elliptic spoon-shaped wax spatula, and the other end of the handle is connected with a half diamond-shaped carving knife, the edge at the pointed end on the left side of the carving knife is an acute cutting edge, and the right side of the carving knife is a straight-line blunt edge. As for the wax pattern carving tool of the invention, the wax spatula is used for wax addition during wax pattern preparation of a removable denture, the acute cutting edge part of the carving knife is used for carving and wax scraping, and the straight-line blunt edge part is used for measuring undercut filling quantity of an abutment on a denture mold. The wax pattern carving tool of the invention is simple and practical, and improves the denture fabrication efficiency.

The invention discloses a method for repairing a removable denture self-repairing filling material. The removable denture self-repairing filling material of the invention is an addition-type silica gel and a single-component room temperature vulcanized silica gel, which is more supportive than the existing denture care products. Compared with the soft lining materials completed by hospital dentists, it is easy to operate and does not destroy the original concave-convex three-dimensional matching between the concave surface of the denture base and the gums during operation, and patients can operate by themselves.