48 results about "Partial upper denture" patented technology

There is provided a system for fabricating at least a portion of a denture. The system includes a three-dimensional scanning device for scanning a surface of a denture template, and a computer-readable medium including a computer program for receiving data from the scanning device, creating a 3-dimensional model of the surface, and optionally modifying the 3-dimensional model and/or adding features to the 3-dimensional model. The system also includes a fabricator for creating the at least the portion of the denture, from a selected material, based on the 3-dimensional model. The fabricator may be a device including a lathe, or a rapid prototyping machine. There is also provided a method for fabricating at least a portion of a 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 dental attachment system has an abutment member configured for attachment to a tooth root, implant, or adjacent tooth, the abutment member having a head and an annular seat adjacent the head. An elastomeric ring is configured for releasable engagement in the seat on the abutment member, and is retained in a retainer ring which in turn is in swivel engagement with a concave inner surface of a cavity in a cap which is secured in a recess in a dental appliance such as a denture, partial denture, or the like.

The invention discloses a process for quickly manufacturing a removable partial denture bracket by laser, which mainly comprises the following steps: acquiring a three-dimensional part model of a tooth jaw of a patient, adding an indented thin-wall support to the model, layering and dispersing to generate laser processing numerical control instructions, and paving powder on a preheated and insulated metal substrate; and then using a continuous YAG or fiber laser with the beam quality M<2> is smaller than 1.1 to melt metal or alloy powder in a special granularity range layer by layer by using optimized powder paving thickness, falling height of a forming cylinder and a laser processing technique under a focusing light spot of 10 to 100 mu m, and finishing melting, accumulating and processing of the whole part; and finally carrying out tempering heat treatment on the formed part, to obtain the removable partial deture bracket, which combines metallurgy and has a tissue density close to 100 percent. The process can overcome the difficulty of the prior art, and directly manufacture the removable partial denture bracket which has the advantages of high precision and high surface smoothness, no deformation and excellent mechanical property.

A hydrogel for use in oral care. The hydrogel is ion beam cross-linked, the hydrogel is adapted to be disposed in the oral cavity and may be adapted to provide a denture fixative or may be loaded with a whitening agent for use in whitening one or more teeth and disposed on or adjacent one or more teeth and the whitening agent is slow-released to whiten the one or more teeth. Other loading materials may include materials for treatment of alveolitis or malodor, inter alia. The present invention is a new hydrophilic oral and dental cohesive hydrogel sheet designed to securely grip and cushion prosthetic devices in the human mouth with the further ability to slow release antimicrobial or other orally desirable agents. Additionally, the invention also provides a method of making an orally cohesive device that: 1) is easily adapted and applied to a removable dental prosthesis; 2) bonds well to alveolar ridge/palatal mucosa and denture acrylic materials; and 3) releases cleanly, with no tacky or thixotropic residue when the prosthesis is removed. The cohesive hydrogel gel device is a hydrogel-forming polymer mixed with water, optionally surrounding an internal scrim, and uses an electron-beam energy source to cause cross-linking. The method does not need any chemical additive to affect the cross-linking. Furthermore the beam energy can be adjusted to optimize the cohesive properties of either side of the device, as well as to compensate for addition of orally active agents, if any are chosen. The hydrogel sheets are pre-cut to fit most sizes of maxillary and mandibular full denture prostheses, but can be easily trimmed with a scissors by the end user for the ideal custom fit of any full or partial denture, in either arch.

A conversion abutment that cements onto one-piece dental implants that convert the one-piece implant use to a retrievable screw retained implant use in retaining complete dentures, hybrids, partial dentures, or fixed screw retained crowns or bridges, allowing the flexibility to retain and remove these restorative prostheses. These conversion abutments can be fabricated as angled conversion abutments to be used with single or multiple implants placed at various angulations. The conversion abutment system consists of three parts: a cementable conversion abutment (straight or angled), a coping (short or extended), and an occlusal screw. The bottom part (or apical portion) of the implant conversion abutment will cement over the one-piece implant in use, while the top (or coronal portion) will allow a screw to fit through a coping into the implant conversion abutment, screwing the prostheses into place.

The invention belongs to the field of oral cavity repair and repair technologies, and relates to a digital design method of a removable partial denture rest. The method comprises the following steps:firstly, drawing design lines of component parts of the rest by using a pencil on a solid model according to requirements of a doctor and design theory knowledge of removable partial dentures; and then, performing three-dimensional scanning by using a scanner to obtain a three-dimensional digital model with the rest design lines, and carrying out digital design according to the scanned rest designlines. The modification of the digital design can be greatly reduced, the influence on the operation rate of design software is reduced, the whole flow is highly pipelined, the training difficulty ofoperators is reduced, and the production efficiency is improved.

The invention discloses a design method for a personalized removable local dentures holder, two dentures holders designed by the design method, and a manufacture method for the two dentures holders. The design method is subjected to integral forming design, patient clinic doctor seeing frequencies are reduced, and patient and doctor time is saved. The two designed dentures holders are both subjected to the integral forming design, and the problem of more dentures components in the prior art can be solved. The manufacture method is subjected to integral forming manufacture, and therefore, the problems in the prior art that a casting technology has a complex and complicated manufacture process and subtractive manufacturing materials can not be fully utilized can be solved.

A method for making ceramic fixed partial dentures comprising separating the as-sintered partial denture structure, rejoining the retainers and pontic with glass, which forms a strong joint between the retainers and pontic after sintering. This method may produce ceramic long-span fixed partial dentures with a better fit.

The invention relates to a removable partial denture interactive design method constructed based on vector graphics and solves the technical problems that in oral cavity diagnosis clinical practice atthe present stage, paper denture design sheets are prone to being damaged and lost, are not easy to store and manage and cannot provide structural data for follow-up reference use. The method comprises the following steps: (1) data definition and initialization: performing digital definition on a designed removable partial denture assembly and the position of the designed removable partial denture assembly and filling newly-built blank design with acquiescent digitized denture design data; (2) state switching: switching system drawing states according to a user operation; (3) drawing motion capture: capturing user mouse motion and modifying temporary drawing data to serve as response; (4) design rendering: reflecting user operation results through rendering; (5) motion capture finishing:capturing user mouse action and modifying formal drawing data to serve as response. The removable partial denture interactive design method disclosed by the invention can be applied to the field of partial denture design.

The invention relates to a method for producing a dental prosthetic shaped part, such as a partial or total prosthesis, which is produced in multiple layers from a generatively produced solid-body model of at least one prosthetic tooth or one prosthetic dental arch, wherein the prosthetic teeth have, on the inner face of the tooth neck, a lumen into which a dentine-coloured, polymerizable composition is introduced. This composition is then polymerized in at least one step. The at least one prosthetic tooth with dentine-coloured composition is arranged with its cervical side on the tooth-side surface of the prosthesis base and pressed together. Thereafter, the partial or total prosthesis obtained is completely cured in a light-curing appliance. The invention likewise relates to the prosthetic shaped parts that are obtainable by the method according to the invention.

The invention relates to a high efficiency digital design method of removable partial denture. The method comprises the following steps: 1) three-dimensional scanning is carried out for the removablepartial denture designed and manufactured by hand and the dental model entity restored by the removable partial denture and the removable partial denture, and the whole storage is used as standard template data; 2) The current dental model which needs to be repaired with removable partial denture by three-dimensional scanning is denoted as data D1; 3) selecting a set of standard template data fromthat step 1) and recording as data D2; 4) take that non-missing tooth part as a common area, and registering the data D2 with the data D1 by a common area registration algorithm; 5) deleting the dental model data in the data D2; 6) on that basic of step 5), the standard template data of the removable partial denture is fine-tuned to meet the individualized requirement of the current dental jaw model, and the design is completed. The method greatly reduces excessive manual interactive design operation in the digital design software, improves the design level and efficiency of the operator, andimproves the design precision.

The invention provides a dental device comprising thermoplastic polyamide having a Charpy notched impact strength of at least 3.5 ft-lb/in2. Preferably the polyamide comprises at least 10 percent by weight of micro-crystals having a largest dimension less than 750 nanometers. Preferably the device is a Denture base, denture, partial denture, clasp, splint, or night guard. Preferably, the polyamide has an opacity of less than 30 percent. The invention provides a metal cartridge container containing particles of thermoplastic polyamide effectively free of pigment. The metal cartridge is used in a method of making a partial dental prosthesis having a substantially transparent clasp. First a substantially transparent thermoplastic is injected into a first portion of a mold cavity of a mold containing an artificial tooth, and then a substantially opaque thermoplastic injecting into a second portion of the mold cavity. The removable partial dental prosthesis formed includes an artificial tooth supported by a base integrally connected to a clasp, wherein the base includes pigment and is substantially opaque, and the clasp is substantially transparent and effectively without pigment.

The invention relates to a High-precision rapid manufacturing method for a removable partial denture. The method comprises the following steps: 1) three-dimensional scanning is carried out on a modelrequiring removable partial denture restoration; 2) designing that removable partial denture with the CAD software of the removable partial denture; 3) designing and 3D printing a dental preparation guide plate based on the designed removable partial denture; 4) guiding by that tooth preparation guide plate to carry out tooth preparation on the model; 5) re-three-dimensional scanning and designinga new removable partial denture for the model of the tooth body prepared; 6) that removable partial denture newly design in the step 5) is manufactured so as to be able to be submit to clinical use together with the dental preparation guide plate. The invention is helpful to reduce the guiding error of the dental preparation guide plate of the removable partial denture, and can simultaneously complete the dental preparation and the denture wearing in the clinic; and the restoration precision and the efficiency of the removable partial denture are remarkably improved.

The invention discloses a removable partial denture intelligent design method, which belongs to the technical field of 3D printing, and comprises the following steps: performing Boolean operation according to an edge-triangle intersection method, establishing a grid growth relation list, counting the overlap ratio of seed nodes, the number of triangular patches and the total area, and obtaining the integrating degree of a denture template model and an oral cavity model. According to the method, the technical problems of improving the operation speed, reducing the memory utilization rate and realizing intelligent recommendation of the false tooth template model are solved, the speed of intersection calculation is greatly improved, the redundancy of intersection calculation is reduced, the stability and efficiency of an algorithm are greatly improved, and meanwhile, the quality of a Boolean operation result is also improved; the method can quickly judge the spatial position relationship between the point and the model, is suitable for closed and open grid models, is stable and reliable in algorithm, has fewer non-popular or unstable triangular patches in the Boolean operation result, can perform continuous Boolean operation, and can be used for cutting simulation.

The invention provides an automatic generation method and system for a removable partial denture bracket model. The method comprises the following steps of: acquiring bracket two-dimensional data and dentition model scanning data; obtaining remaining teeth and tooth positions according to the obtained dentition model scanning data and a preset deep learning network model; and obtaining a model of a clamping ring, a connecting body, a retention net and a termination line according to an analysis result of the bracket two-dimensional data and the obtained remaining teeth and tooth positions. According to the method, the large connecting body, the retention net, the clamping ring and the termination line in the bracket are automatically generated based on the bracket two-dimensional data, so that a large amount of human-computer interaction operation is reduced, the bracket design quality and efficiency are greatly improved, the design process is simplified, the bracket design efficiency is improved, and the bracket design experience is optimized.

A multi-piece dental prosthesis system is provided. The system includes an implant which can be implanted into a bone of the patient, an abutment removably connected to the implant by a prosthetic screw, and a ti-base removably connected to the abutment. The system may be used to hold a crown, denture, or partial denture in place.