236 results about "Denture base" patented technology

A composition includes a light-curable viscous mixture that includes: 0-50% by weight of a poly(methyl methacrylate) / methyl methacrylate solution; 5-20% by weight of at least one kind of multifunctional aliphatic (meth)acrylate; 5-40% by weight of at least one kind of aliphatic urethane (meth)acrylate oligomer; 25-65% by weight of at least one kind of difunctional bisphenol-A dimethacrylate; 0.1 to 5% by weight of at least one kind of a photoinitiator; 0.05 to 2% by weight of at least one kind of light stabilizer; and 0.1 to 3% by weight of color pigment based on the total weight of the composition.

Photo-curable compositions for artificial teeth and denture base and a method for manufacturing denture by a three-dimensional printing system are provided. The compositions include photo-curable organic compounds, surface modified nano-sized inorganic filler, photo-initiator, colorant, and stabilizer. The composition is in a viscous liquid state having 1500-5000 cps at ambient temperature and has a low viscosity of 50-500 cps at jetting temperature or dispensing temperature. The composition also has an excellent curing rate for three-dimensional printing. Using the compositions, denture having a distinctive denture base and a set of artificial teeth can be manufactured via an inkjet type or digital light process type three-dimensional printing according to Computer Aided Design (CAD) data.

A combination set (FIG. 1, A,B), at least in a medium size or different sizes, includes complete arched denture teeth units (1), (2) preformed without denture base, for setting up denture teeth instantly and adjustable in a full balanced articulation during custom denture work. The set(s) is composed of a complete upper (1) and separate complementary complete lower (2) arched denture teeth unit, each including anterior and posterior denture teeth inter-connected either in a complete (A) or under-extended complete (B) tooth arch at least in an oval form. Each of the units includes a total unitary inter-occlusal bite plane preformed in a corresponding centric occlusion and full balanced articulation. In order to prevent to setting-up denture teeth, one by one in the centric and full balanced articulation, as regularly, hereto the unitary inter-occlusal bite plane is pre-set according to interconnected anterior and posterior denture teeth. While the posterior denture teeth are formed cuspless spheroellipsoidal, conforming a 4 inch (11 cm.) radius, thereby pre-set either in a planar or anterio-posterior or curved sphero-ellipsoidal arrangement including a free centric inter-occlusal contact (FIG. 2) either full (C, 5) or partly (D,6) and a free eccentric bi-lateral balanced articular contact. Having the last molar posterior denture teeth either broader or not than regularly and pre-set without tongue interference to ascertain individually the balanced articular contact. Having the set(s) non-bendable from a durable tooth aesthetic material. The invention includes further a method A for preforming the set(s) from the material by providing a durable economised mould structure and yet a method B for setting up the set(s) in an instant and adjustable full balanced articulation with the provision of an auxiliary set of tools.

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.

System and processes for optimal selection of teeth for dentures based on the anatomical measurements and bite impressions of the patient. This information is applied in an iterative manner to rules that balance the anatomical and aesthetic considerations to select the best teeth for a patient. The system may also use this information in an iterative manner to rules that balance the anatomical and aesthetic considerations to design the optimal denture base for the patient as well.

This invention designs and builds multiple layers (two layers or more) of various dental devices, specifically denture base or denture, where printed multiple layered denture base with teeth cavities to receive artificial denture tooth materials to form final dental devices, such as partial and full dentures. It can also print denture teeth. This invention also designs and prints multiple layers (two layers or more) of denture base with artificial denture teeth to form final dental devices, such as partial and full dentures. A method for manufacturing a layered denture is provided. The invention provides a multiple layered denture base materials for printing a denture base. The invention also provides a multiple layered denture tooth materials for printing artificial denture teeth. Highly shape adjustable or shape memory polymer layer(s) may be used in these multiple layered denture base forms. Different layer of material has different mechanical and physical properties to meet different need, which provide added benefits to the patients, dental professional and dental laboratory.

A method for making a denture comprising creating three-dimensional models of top denture base, bottom denture base, and denture tooth molds; fabricating the molds by an additive manufacturing process; joining the bottom denture base mold to the top denture base mold to form a denture base mold cavity; injecting fluid synthetic denture base material into the mold cavity and curing the material to form the denture base; removing the bottom denture base mold from the top denture base mold, while leaving the denture base in the top denture base mold; joining the denture tooth mold to the top denture base mold to form a mold cavity defining the shape of denture teeth; and injecting fluid synthetic denture tooth material into the denture teeth mold cavity and curing the material to form the denture teeth joined to the denture base. An apparatus for making the denture is also disclosed.

Systems and processes for the duplication of dentures from existing dentures. The interior and exterior of the dentures are scanned and a best fit procedure is used to create a fully digitized denture. The denture teeth are selected from a library that is the closest fit to the original denture teeth. The library teeth are offset a preset distance to compensate for the best fit. The teeth are then subtracted from the digitized denture. The margins of the denture are then cleaned after subtracting the teeth. The denture base is then ready for manufacturing. The teeth are then installed onto the denture base and provided to the patient.

A dental magnetic attachment having good cushioning properties against a compressing pressure which makes a denture sink appropriately on biting. The dental magnetic attachment embedded in the denture base for holding the denture in the oral cavity by a magnetic attractive force working with the magnetic assembly and a soft magnetic keeper embedded in the top of the root surface includes a magnetic assembly and a cap covering the top of the magnetic assembly. The magnetic assembly has a hollow in the center of its top. The cap with a button is placed on the magnetic assembly, inserting the button into the hollow to contact to its bottom. On biting, the button is compressed, to be deformed with a shorter thickness and at this time a sleeve formed as a body around the core slides down along the side of the magnetic assembly to reduce the thickness of the dental magnetic attachment. This sliding makes the denture sink uniformly and appropriately. The dental magnetic attachment has good cushioning properties and offers a good feeling to a patient when biting with the denture.

The system of a preferred embodiment uses a process whereby a true replication of the patient's jaw structure is created in a digital three dimensional model. This true replication is then used to precisely locate and / or copy the anatomical landmarks of the patient for use in fabricating a denture base for use in a denture for the individual patient. This system is able to create a denture with precisely located features corresponding to the anatomical landmarks of the patient with little manual intervention.

Surface mapping and / or generation device is provided, with a device for mapping 3D data of at least one denture base object such as a tooth stump or an implantation abutment, and an environment thereof, as well as with a device for the data-based generation and production of a denture part incorporating the 3D data of the denture base object. Additionally provided are a device for determining and / or defining a placement direction of the denture part that is to be slipped onto the denture base object, and a device for determining and producing a primary part that is to be slipped onto the denture base object before the denture part and that yields a desired placement direction for the denture part which is different from the placement direction that exists for slipping the primary part onto the denture base object. The device for data-based generation and production of a denture part is designed to generate and produce the latter by incorporating the 3D data of the primary part. Surface mapping and / or generation method is provided, wherein 3D data from a denture base object such as a tooth stump or an implantation abutment and an environment thereof are mapped and then, based on this 3D data of the denture base object, a denture part to be slipped thereon is produced. Before production of the denture part, a placement direction of the denture part onto the denture base object is determined or defined. On the basis of this 3D data of the denture base object, a primary part is determined and produced, with which a desired placement direction that differs from the placement direction that exists for slipping the primary part onto the denture base object is created for the denture part. On the basis of the 3D data, the denture part is generated and produced based on data so as to fit when pushed onto the primary part.

A head for a denture brush that is detachably connected to a powered handle and a denture brush incorporating the same. The head includes a housing having a first set of bristles extending outwardly from a first side and a second set of bristles extending outwardly from a second side. The first and second sets of bristles are mounted such that they are movable in response to rotation of a camshaft in the head. Some of bristles on each side of the head may be linearly pulsed toward and away from the housing substantially orthogonally to a longitudinal axis of the head. Additionally, some of the bristles on each side of the head may be rotated about a horizontal axis that is orthogonal to the longitudinal axis.

An improved denture system is disclosed. An improved denture system has a support bar and an artificial denture base. The denture base has an oversize cutout and a corresponding cavity and the support bar has a plurality of reference posts which mechanically interface with the corresponding cavity so that the support bar is connected to the artificial denture base and provides reinforcement and stability to the denture system. The shape and position of the reference posts fully constrains the support bar in a fixed position with reference to the denture base. In one embodiment, the denture base snap-fits onto the support bar.

The system of a preferred embodiment uses a process whereby a true replication of the patient's jaw structure is created in a digital three dimensional model. This true replication is then used to precisely locate and / or copy the anatomical landmarks of the patient for use in fabricating a denture base for use in a denture for the individual patient. This system is able to to create a denture with precisely located features corresponding to the anatomical landmarks of the patient with little manual intervention.

A method for automated manufacture of dentures including providing a digital data set of the individual denture to be produced, a digital separation of the model into dental arch and gingival, producing the dental arch from a ceramic or plastic material using cutting technology, producing the denture base through generative or ablative procedures from predominantly (meth-)acrylate-based plastic materials, connecting the dental arch and gingiva through bonding or joining or a combination of bonding and joining.

The invention discloses a method for producing an immediate complete or half denture based on a 3D printing technique. The method comprises the steps of preparing an impression with a remaining tooth jaw or a tooth-free jaw, transferring a jaw position relation, acquiring digital models of the remaining tooth jaw or the tooth-free jaw and the jaw position relation, setting the arrangement and the denture border of artificial teeth of the immediate complete or half denture corresponding to the form of the remaining tooth jaw or the tooth-free jaw and the jaw position relation, invoking data in a preset database, designing the artificial teeth and polishing surfaces of the artificial teeth, regulating the occlusion of the teeth to enable alveolar ridge supporting tissues to bear proper pressure distribution, and manufacturing a three-dimensional model of the immediate complete or half denture by virtue of a photo-healing three-dimensional printing technique in the 3D printing technique. The method has the advantages that the production steps are simple, the production time is short, the precision is high, the denture can be conformably worn by a patient, and meanwhile, the production cost is lowered.

The system of a preferred embodiment uses a process whereby a true replication of the patient's jaw structure is created in a digital three dimensional model. This true replication is then used to precisely locate and / or copy the anatomical landmarks of the patient for use in fabricating a denture base for use in a denture for the individual patient. This system is able to to create a denture with precisely located features corresponding to the anatomical landmarks of the patient with little manual intervention.

A method of molding artificial teeth in denture base material comprising forming a U-shaped cavity in a block of denture base material, forming socket cavities in the bottom of the U-shaped cavity, casting a fluid artificial tooth material into the cavities, and causing the fluid tooth material to solidify into solid artificial tooth material while applying pressure. Causing the solidification may include heating the fluid tooth material. The method may include casting a liquid elastomer into a bottom portion of the U-shaped cavity following forming that cavity and prior to the forming the socket cavities, curing the liquid elastomer into a solid elastomeric cushion, and removing the cushion from the U-shaped cavity. Subsequently, the cushion may be inserted into the U-shaped cavity and contacted with the fluid tooth material. A die may then be contacted with the cushion to apply pressure to it and the fluid tooth material during curing.

A dental composite material that comprises a polyhedral oligomeric silsesquioxane is disclosed. The dental composite material is useful for a variety of dental materials, treatments, and restorative functions including crown and bridge materials, fillings, adhesives, sealants, luting agents or cements, denture base materials, orthodontic materials and sealants, and other dental restorative materials.

A method of fabricating a denture, comprising milling a preliminary try-in denture from denture material comprising a layer of denture base material contiguous with a layer of denture tooth material. Denture base material is removed from the block to form a first part of the, labial, buccal, gingival, and flange regions of the denture base to form a preliminary denture. A preliminary mold is created from this preliminary denture. The preliminary denture is then further modified with deformable waxes in gingival and anterior tooth recesses to form a preliminary try-in denture, which is fitted to a patient and adjusted to optimal dimensions. The adjusted try-in denture is then reproduced by further molding methods, producing the final denture.

Surface mapping and / or generation device is provided, with a device for mapping 3D data of at least one denture base object such as a tooth stump or an implantation abutment, and an environment thereof, as well as with a device for the data-based generation and production of a denture part incorporating the 3D data of the denture base object. Additionally provided are a device for determining and / or defining a placement direction of the denture part that is to be slipped onto the denture base object, and a device for determining and producing a primary part that is to be slipped onto the denture base object before the denture part and that yields a desired placement direction for the denture part which is different from the placement direction that exists for slipping the primary part onto the denture base object. The device for data-based generation and production of a denture part is designed to generate and produce the latter by incorporating the 3D data of the primary part. Surface mapping and / or generation method is provided, wherein 3D data from a denture base object such as a tooth stump or an implantation abutment and an environment thereof are mapped and then, based on this 3D data of the denture base object, a denture part to be slipped thereon is produced. Before production of the denture part, a placement direction of the denture part onto the denture base object is determined or defined. On the basis of this 3D data of the denture base object, a primary part is determined and produced, with which a desired placement direction that differs from the placement direction that exists for slipping the primary part onto the denture base object is created for the denture part. On the basis of the 3D data, the denture part is generated and produced based on data so as to fit when pushed onto the primary part.

An improved implant root for tooth implanting, a coarse threaded portion of the implant root is formed to have at least two helical treating surfaces each with an HA coating (covered with hydroxyapatite) and each extending in the vertical direction. The areas of the HA coatings can thus be increased in favor of fast growth of a bone of a denture base after implanting into the bone to envelop the implant root; this can shorten the curing process from implanting the implant root to mounting a crown.

A combination set (FIG. 1, A,B), at least normalized in a medium size or different sizes and forms, includes complete arched artificial teeth units (1), (2) preformed without denture base, for setting up these units (1), (2) in a denture thereby instantly and adjustable in a full balanced articulation during custom denture work. The set(s) is composed of a complete upper (1) and separate complementary complete lower (2) arched artificial teeth unit, each including anterior and posterior artificial teeth inter-connected either in a complete (A) or under-extended complete (B) tooth arch at least in an oval form and restricted occluso-gingival height. Each of the units includes a total unitary inter-occlusal bite plane preformed in a corresponding centric occlusion and full balanced articulation. In order to prevent setting up as regularly denture teeth, one by one in the centric and full balanced articulation, hereto the unitary inter-occlusal bite plane is pre-formed according to interconnected styled artificial anterior and posterior teeth. Thereby the bite plane is formed cuspless sphero-ellipsoidal, conforming a 4 inch (11 cm.) radius, thereby to be set on an oblique planar sphero-ellipsoidal bite occlusal level including a free centric inter-occlusal contact (FIG. 2) either full (C,5) or partly (D,6) and a free eccentric bi-lateral balanced articular contact. Having the last molar posterior artificial teeth either broader or not than regularly and pre-formed without tongue interference to ascertain individually the balanced articular contact. Further the set(s) is non-bendable from a durable tooth aesthetic material.

Summary Methods for the production of complete or partial prostheses involve, firstly A) provision of 3D data of the situation in the mouth in the edentulate or partly toothed state; B) digital designing of the denture base for lower and upper jaw each; C) digital positioning of virtual teeth with appropriate occlusion and a tooth shape selected according to aesthetic criteria, in the case of complete prostheses, D1) production of the dental arch using an automated method from the groups of layer-building and of material-removing methods; and D2) production of the denture base using an automated method from the groups of layer-building and of material-removing methods; and, in the case of partial prostheses; D1) production of the dental arch using an automated method from the groups of layer-building and of material-removing methods; and D2) production of the support structures or fastening elements using an automated method from the groups of layer-building and of material-removing methods.