Tooth Construction Patents (Class 433/202.1)
Having plural piece backing or discrete connecting means for adjacent tooth portions (Class 433/205)
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Publication number: 20140205969Abstract: A system for dental implant restoration is provided. It includes universal aligning adaptors and prosthetic components having co-operable indices, which together form a translational, integrating system which aligns, synchronizes, and references the prosthetic components about an implant's central axis of rotation. Rotation of an adaptor about a prosthetic component, with its reference point becoming aligned to a predetermined reference point on the prosthetic component, followed by the rotation of the adaptor/prosthetic component assembly about the implant, situates the prosthetic component in a predetermined position such that all other prosthetic components become synchronized to the adaptor's reference point. The prosthetic component is mechanical for clinical or lab bench use, or is virtual for restoration design in a software program, prior to milling prosthetic abutments or devices.Type: ApplicationFiled: November 20, 2013Publication date: July 24, 2014Inventor: Gerald M. Marlin
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Patent number: 8785008Abstract: The invention relates to the use of a sintered body obtained by subjecting a primary sintered body having a relative density of 95% or higher produced from a fine yttria-containing zirconia powder to HIP sintering at a temperature of 1,200-1,600° C. and a pressure of 50 MPa or higher. This sintered body is either a sintered body which has a total light transmittance, as measured at a thickness of 0.5 mm, of 43% or higher and a three-point bending strength of 1,700 MPa or higher or a zirconia sintered body which has a total light transmittance, as measured at a thickness of 1 mm, of 40% or higher and a three-point bending strength of 500 MPa or higher and which combines high strength and total light transmission.Type: GrantFiled: July 19, 2007Date of Patent: July 22, 2014Assignee: Tosoh CorporationInventors: Isao Yamashita, Koji Tsukuma, Toru Tsuyoshi
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Patent number: 8778075Abstract: Lithium silicate glass ceramics and glasses are described which can advantageously be applied to zirconium oxide ceramics in particular by pressing-on in the viscous state and form a solid bond with these.Type: GrantFiled: August 5, 2013Date of Patent: July 15, 2014Assignee: Ivoclar Vivadent AGInventors: Christian Ritzberger, Ricardo Dellagiacomo, Marcel Schweiger, Harald Bürke, Wolfram Höland, Volker Rheinberger
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Patent number: 8775131Abstract: A method for producing a tooth replacement and corresponding computer programs and devices are described. The method can comprise generating a tooth replacement having a core and an outer layer which define a boundary surface between each other. To ensure that the prepared tooth replacement is technically acceptable independent of skills and experience of the user and approximate the appearance of a natural tooth, the extension of the boundary surface represents a natural extension of the dentino-enamel junction of a tooth for which the tooth replacement is provided, wherein the extension of the boundary surface (i) is determined based on a recording of the dentino-enamel junction of the tooth for which the tooth replacement is provided, and/or (ii) is determined based on directly or indirectly recorded geometry data of at least a portion of the outer geometry of the tooth for which the tooth replacement is provided.Type: GrantFiled: March 1, 2011Date of Patent: July 8, 2014Inventor: Josef Schweiger
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Patent number: 8770975Abstract: A method of making a dental restoration is provided. The dental restoration comprises a frame and a veneer. An inner veneer surface and an outer frame surface are adapted to be mated with one another to form the dental restoration. The method in particular comprises steps of (a) providing an outer veneer surface; (b) determining an outer frame surface, based on the outer veneer surface; (c) determining an inner veneer surface, based on the outer frame surface; and (d) providing an inner frame surface, based on a natural tooth surface. The method may be advantageous for rapid, precise and inexpensive manufacturing of a dental restoration.Type: GrantFiled: December 1, 2009Date of Patent: July 8, 2014Assignee: 3M Innovative Properties CompanyInventors: Josef A. Waizenegger, Till Meurer, Thomas B. Hiebel, Bastian P. Kirchner, Michael A. Kraemer
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Publication number: 20140113251Abstract: The invention relates to a new kind of tooth replacement crown and tooth replacement bridge, of which the components are a framework and a veneer, which are reversibly connected to each other by a macro-retentive bonding system, and a method for producing the components, in which method these components are preferably produced by means of computer-aided design and computer-aided manufacturing.Type: ApplicationFiled: May 7, 2012Publication date: April 24, 2014Inventors: Josef Schweiger, Peter Neumeier
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Patent number: 8702425Abstract: A temporary supraconstruction for a dental implant or a core for a temporary supraconstruction for a dental implant, characterized in that it includes a material having a modulus of elasticity of less than 300 MPa, preferably in the range of from 15 to 20 MPa.Type: GrantFiled: September 26, 2007Date of Patent: April 22, 2014Assignee: VOCO GmbHInventor: Jan Erik Schulz-Walz
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Publication number: 20140106307Abstract: Disclosed herein is a method for producing a dental and/or bone prosthesis for a dentition having a defect, comprising: determining the left and right direction point and an induction point of the upper jaw as three cranial reference points of the upper jaw and determining the left and right direction point and an induction point of the lower jaw as three cranial reference points of the lower jaw; creating a model of the defective dentition, one model half produced for the upper jaw and one model half produced for the lower jaw; identifying the three cranial reference points of the upper jaw on the upper jaw model half and identifying the three cranial reference points of the lower jaw on the lower jaw model half; arranging and fixing the upper jaw model half and the lower jaw model half relative to one another; forming the dental and/or bone prosthesis.Type: ApplicationFiled: October 10, 2013Publication date: April 17, 2014Applicant: Tridenta Dentaltechnik GmbHInventors: Frank JASPER, Viola ILLMER, Michael KRISCHOLLEK
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Publication number: 20140087327Abstract: Prosthetic tooth support (1) with at least one prosthetic tooth (2), in particular with several prosthetic teeth (2), wherein a crown area (3) of the prosthetic tooth (2) or of the prosthetic teeth (2) is embedded, preferably cast, at least partially, preferably completely, in a support layer (4).Type: ApplicationFiled: April 18, 2012Publication date: March 27, 2014Applicant: Amann Girrbach AGInventor: Falko Noack
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Publication number: 20140080095Abstract: A method of manufacturing a permanent prosthesis for attachment to a dental implant installed in a mouth of a patient includes scanning a patient specific temporary prosthesis (PSTP) to obtain scan data. The PSTP is attached to the dental implant in the mouth of the patient. Gingival tissue surrounding the PSTP is permitted to heal in the mouth of the patient. In response to aesthetics of the healed gingival tissue surrounding the PSTP in the mouth of the patient not being acceptable, the PSTP is physically modified by (i) removing material from the PSTP, (ii) adding material to the PSTP, or (iii) both. The modified PSTP is scanned and a permanent prosthesis is fabricated as a replica of the modified PSTP using scan data generated from the scan of the modified PSTP.Type: ApplicationFiled: March 12, 2013Publication date: March 20, 2014Applicant: BIOMET 3I, LLCInventors: Zachary B. Suttin, Stephen M. Herrington, Ross W. Towse
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Patent number: 8673454Abstract: A blank and method for the production of dental shaped bodies in machining equipment having at least two tools located in the machining chamber of the machining equipment, including a corpus of tooth restoration material, from which the shaped body can be carved by means of at least one of at least two tools by material removal. The blank exhibits at least two gages, each of which is in the form of a recess, the geometry of which is such that the tool selected for the cutting operation can be recognized by means of at least one of the gages by reference to its outer contour, the at least two gages being disposed on the blank in such a way that they can be simultaneously engaged by the at least tools when the blank is clamped in the machining equipment for carving purposes.Type: GrantFiled: June 17, 2011Date of Patent: March 18, 2014Assignee: Sirona Dental Systems GmbHInventors: Franz Basler, Peter Fornoff
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Publication number: 20140051036Abstract: There are described tooth filling materials and dental varnishes for inhibiting the biofilm formation of Streptococcus mutans containing (a) a quantity of an active substance for inhibiting the biofilm formation, (b) a material for forming a structure for the uptake and delayed release of the active substance and (c) a filling material system. Another aspect of this invention relates to a method for producing tooth filling materials or dental varnishes according to the invention for inhibiting the biofilm formation of Streptococcus mutans. The present invention also relates to a kit comprising tooth filling materials or dental varnishes according to the invention and one or more additional constituents. There are also described methods for inhibiting the biofilm formation of Streptococcus mutans, methods for producing a dental component which inhibits the biofilm formation and the use of the active substance for producing a dental material.Type: ApplicationFiled: August 9, 2013Publication date: February 20, 2014Applicants: Helmholtz-Zentrum fuer Infektionsforschung GmbH, VOCO GmbhInventors: Irene Wagner-Doebler, Andree Barg
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Patent number: 8641938Abstract: A method for making a denture comprising a base and a plurality of teeth joined thereto. The method comprises forming a first cavity in a block of a denture base material, the first cavity being formed to match the contour of natural teeth as arranged on maxillae or on a mandible; filling the first cavity with a first fluid synthetic tooth material and solidifying the first fluid synthetic tooth material into a first solid synthetic tooth material; removing a portion of the first solid synthetic tooth material to form the plurality of teeth; and removing a portion of the block of denture base material to form the denture base. The steps of the method may be implemented by a computer. An apparatus for making the denture according to certain embodiments of the method, and a denture comprised of a base and artificial teeth are also disclosed.Type: GrantFiled: August 10, 2012Date of Patent: February 4, 2014Assignee: CMP Industries LLCInventor: Devon O. Howe
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Patent number: 8636512Abstract: A set of elements is described for use in the production of a dental prosthesis (20), in particular of a crown, a bridge, an inlay or an onlay, comprising: a framework (3) and one or more model parts (5) for defining parts of the outer contour of a veneer (15) for the framework (3), wherein the model part or parts (5) can be mounted on the framework (3) in such a way that, at one and the same time, (i) a gap (7) remains between the model part or parts (5) and the framework (3) and (ii) the model part or parts (5) define parts [lacuna] the outer contour. Corresponding methods and systems are also described.Type: GrantFiled: May 16, 2007Date of Patent: January 28, 2014Assignee: Bego Bremer Goldschlagerei Wilh. Herbst GmbH & Co. KGInventors: Stephan Dierkes, Jan Eilers, Ole Hinrichs, Wolfgang Stolzner, Bernardo Franco, Carsten Vagt
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Patent number: 8632889Abstract: Molded member made of form-stabilized material, comprising at least one first component and one second component, characterized in that the second component has a different pigmentation than the first component and the second component is disposed inside the first element, forming a boundary surface, in such a way that the boundary surface represents a spatially curved surface.Type: GrantFiled: July 21, 2009Date of Patent: January 21, 2014Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KGInventors: Norbert Thiel, Olivia Albarski, Michael Dorn, Stefan Aechtner, Joachim Bibus, Andreas Schmid
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Patent number: 8628702Abstract: A supporting paste containing a component (A) which loses water in a temperature range between 110° C. and 1100° C., a component (B) which is geometrically stable at temperatures between 110° C. and 1100° C., solvent and auxiliary agents. Also, the preparation of such a supporting paste and to its use in particular in the field of dental technology.Type: GrantFiled: December 20, 2006Date of Patent: January 14, 2014Assignee: Ivoclar Vivadent AGInventors: Konrad Hagenbuch, Volker Rheinberger
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Patent number: 8624167Abstract: A device for making a muffle, with which dental restoration parts can be produced with the aid of an embedding compound, at least one press blank and a pressing device, the device having a muffle base, a tubular sleeve surrounding the muffle base and at least one muffle insert which is arranged on the muffle base and can be separated from it. At least two cylindrical press-channel forming elements (16, 18, 20) extend parallel to one another and spaced apart from one another from a flat-formed portion of the muffle insert (12), which can be burned out at least with respect to the forming elements, which elements are formed in a closed manner, and in particular with thin walls, at least on one free end face opposite from the flat-formed portion (14).Type: GrantFiled: March 26, 2009Date of Patent: January 7, 2014Assignee: Ivoclar Vivadent AGInventor: Diethard Bertsch
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Patent number: 8613874Abstract: A method of forming a temporary tooth by fusing a plurality of polymer pellets. The plurality of pellets are fused and molded into the shape of a tooth. Additionally, the formed tooth shape comprises of a adapter shape that allows the formed tooth to be secured to the adjacent teeth of the space of the missing tooth.Type: GrantFiled: November 10, 2010Date of Patent: December 24, 2013Inventor: Steven James Howard
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Publication number: 20130316297Abstract: Dentition three-dimensional data and jaw-bone three-dimensional data are collected from a patient and they are combined. According to the combined data, dental crown data for making up for data on a lost tooth and occlusion data on a dental crown represented by the dental crown data are created. When an occlusion force according to the occlusion data is exerted on the occlusion face of a dental crown, a mechanical evaluation factor is produced in a jaw bone. The mechanical evaluation factor produced near the place where an artificial tooth root supporting a dental crown is to be implanted is calculated. The implantation place is determined so that the mechanical evaluation factor may be smaller and the mechanical load on the jaw bone from the opposed tooth during mastication may be lighter.Type: ApplicationFiled: July 31, 2013Publication date: November 28, 2013Applicant: ICAT CORPORATIONInventors: Motofumi SOGO, Yoshinobu MAEDA, Sadami TSUTSUMI
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Publication number: 20130316305Abstract: Methods and apparatus that permit a dentist to provide a patient with a monolithic ceramic dental restoration (e.g., crown, bridge, or the like) in one office visit. In some embodiments, a dentist is provided with a kit containing one or more near net shape (NNS) millable blanks of various shapes and shades, chair-side software, and a chair-side milling machine to convert a selected millable blank into a finished, fully contoured restoration in about one hour or less. Each such millable blank may be, for example, a dental ceramic (e.g., fully sintered zirconia, fully crystallized lithium silicate, fully crystallized lithium disilicate, or the like) NNS component. In some embodiments, the NNS component includes an integral mandrel at a precise location and orientation to minimize the amount of milling time.Type: ApplicationFiled: May 23, 2013Publication date: November 28, 2013Applicant: James R. Glidewell Dental Ceramics, Inc.Inventors: Robin A. Carden, Michael J. Selberis
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Patent number: 8592330Abstract: The invention is directed to veneer ceramics for dental restorations of framework ceramics comprising yttrium-stabilized zirconium dioxide. It is the object of the invention to make possible a translucent veneer ceramic which has high flexural strength as well as excellent adhesion to the framework ceramic of yttrium-stabilized zirconium dioxide. According to the invention, this object is met in a veneer ceramic for dental restorations made of yttrium-stabilized zirconium dioxide which is produced from the following components: a) SiO2 58.0-74.0 percent by weight b) Al2O3 ?4.0-19.0 percent by weight c) Li2O ?5.0-17.0 percent by weight d) Na2O ?4.0-12.0 percent by weight e) ZrO2 ?0.5-6.0 percent by weight.Type: GrantFiled: March 6, 2008Date of Patent: November 26, 2013Assignee: Ivoclar Vivadent AGInventors: Martina Johannes, Roland Ehrt
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Publication number: 20130295522Abstract: A dental prosthesis, typically formed in a press to metal process, includes application of a porcelain composition sufficient to form a veneer on a dental prosthesis supporting metal structure, the composition having an integrated tooth-like translucency providing an aesthetic appearance. The composition is formed of a dentin frit and an enamel frit, typically sintered into a desired ingot shape including an amount of composition sufficient to veneer the prosthesis. The porcelain composition is a component of a kit that includes opaquers, other porcelains and stains useful in finishing to provide an aesthetic prosthesis.Type: ApplicationFiled: July 3, 2013Publication date: November 7, 2013Inventors: Christopher C.Y. CHU, Slawomir BANASIAK
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Publication number: 20130224684Abstract: The present invention is a dental device comprising natural and sustainable materials. These materials are derived from the nut of the tangua palm tree that may be fashioned into devices for human and animals when replacing one or more teeth of the subject.Type: ApplicationFiled: November 14, 2011Publication date: August 29, 2013Inventor: Frederick R. Guy
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Publication number: 20130216979Abstract: A dental positioning stent for drilling an implant hole and a manufacturing method, a using method and components for the same are provided. The manufacturing method includes: slicing a tooth mold and a false tooth model along a preset slice plane; fixing two markers in the preset slice plane on two sides of the false tooth model respectively; covering the markers and the false tooth model with a shaping agent to form a positioning stent; putting the positioning stent on the teeth in a mouth to perform tomography imaging to acquire a slice image of the preset slice plane; mounting a positioning aid having a positioning hole in the positioning stent according to the slice image pasted up on the tooth mold to guide an initial drill. A dental positioning stent for tomography imaging, and a manufacturing method, a using method, and components thereof are provided.Type: ApplicationFiled: March 18, 2013Publication date: August 22, 2013Inventors: Po-Kun CHENG, Chia-Yun Cheng, Chia-Yu Cheng, Chao-Hsiang Cheng
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Patent number: 8449296Abstract: An appliance fabricated to improve the appearance of a patient's smile includes a plurality of simulated teeth. The interior surfaces of each of the teeth closely fits and conforms to the surface of a patient's real teeth while the outer surfaces of each of the simulated teeth has an ideal surface configuration. The dental appliance provides the patient with the appearance of a perfect set of teeth and an ideal smile without a need to alter the dental structure of the patient's teeth.Type: GrantFiled: November 15, 2007Date of Patent: May 28, 2013Assignee: Den Mat Holdings, LLCInventor: M. Marc Liechtung
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Publication number: 20130101963Abstract: Polymers and copolymers including a functional polymer component may be used as conventional denture materials. Antifungal materials may be releasably bound to the functional polymer component such that the antifungal materials may be slowly eluted over an extended period of time to combat a fungal infection.Type: ApplicationFiled: February 18, 2011Publication date: April 25, 2013Applicant: THE UNIVERSITY OF SOUTH DAKOTAInventor: Yuyu Sun
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Patent number: 8419431Abstract: Apparatuses and methods for providing crowns and bridges is disclosed. The apparatuses include provisional preforms which can have cavities, windows and slits that enable material and linear members to extend through for engagement with adjacent teeth or other preforms. The methods also include ways in which to create crowns and bridges using the preforms.Type: GrantFiled: October 22, 2010Date of Patent: April 16, 2013Inventor: Quang D. Huynh
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Publication number: 20130089827Abstract: A method for manufacturing a regenerated tooth unit comprising a step of disposing and culturing a regenerated tooth germ inside a spacer in vivo in the body of a mammal is provided, wherein said spacer is configured so as to enable prevention of said regenerated tooth germ being extended to more than the maximum tolerance; and configured such that the regenerated tooth germ disposed inside is communicatable with the exterior of the spacer.Type: ApplicationFiled: March 15, 2011Publication date: April 11, 2013Applicant: ORGAN TECHNOLOGIES, INC.Inventors: Takashi Tsuji, Kazuhisa Nakao, Masamitsu Oshima
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Patent number: 8408902Abstract: A material for dentures having a 3-point bending strength of at least 1300 MPa, dentures produced from said type of material, corresponding blank materials, a method for producing blanks, and a method for producing a denture part made from said material or a blank.Type: GrantFiled: June 18, 2007Date of Patent: April 2, 2013Assignee: Institut Straumann AGInventors: Stephan Holzner, Gerhard Weber
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Publication number: 20120282573Abstract: Provided is an acellular mammalian tooth-shaped scaffold comprising a compound that is chemotactic, osteogenic, dentinogenic, amelogenic, or cementogenic. Also provided is a method of replacing a tooth in the mouth of a mammal, where the tooth is absent and a tooth socket is present in the mouth at the position of the absent tooth. The method comprises implanting an acellular scaffold having the shape of the missing tooth into the tooth socket. Additionally, a method of making a tooth scaffold is provided. The method comprises synthesizing an acellular scaffold in the shape of a mammalian tooth and adding at least one compound that is chemotactic, osteogenic, dentinogenic, amelogenic, or cementogenic.Type: ApplicationFiled: June 17, 2010Publication date: November 8, 2012Applicant: The Trustees of Columbia University in the City of New YorkInventor: Jeremy J. Mao
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Publication number: 20120282572Abstract: A procedure for creating a dental prosthetic includes registering three-dimensional (3D) dental impression image data of a tooth restoration site and 3D x-ray image data of the tooth restoration site, and removing image data corresponding to soft tissue in the tooth restoration site from the 3D dental impression image data. A system for producing a dental prosthetic includes at least one processor operable to register 3D dental impression image data of a tooth restoration site and 3D x-ray image data of the tooth restoration site and remove image data corresponding to soft tissue in the tooth restoration site from the 3D dental impression image data.Type: ApplicationFiled: May 6, 2011Publication date: November 8, 2012Applicant: SIRONA DENTAL SYSTEMS GMBHInventors: Roddy MacLeod, Daniel Michaeli, Volker Wedler
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Publication number: 20120178042Abstract: Dental articles are produced using relatively low sintering temperatures to achieve high density dental articles exhibiting strengths equal to and greater than about 700 MPa. Ceramic powders comprised of nanoparticulate crystallites are used to manufacture dental articles. The ceramic powders may include sintering agents, binders and other similar additives to aid in the processing of the ceramic powder into a dental article. The ceramic powders may be processed into dental articles using various methods including, but not limited to, injection molding, gel-casting, slip casting, or electroforming, hand, cad/camming and other various rapid prototyping methods. The ceramic powder may be formed into a suspension, pellet, feedstock material or a pre-sintered blank prior to forming into the dental article.Type: ApplicationFiled: July 13, 2011Publication date: July 12, 2012Applicant: ARDENT, INC.Inventors: Dmitri Brodkin, Moisey Y. Gamarnik
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Publication number: 20120171640Abstract: The present invention is a dental device comprising natural and sustainable materials. These materials are derived from the nut of the tangua palm tree that may be fashioned into devices for human and animals when replacing one or more teeth of the subject.Type: ApplicationFiled: December 30, 2011Publication date: July 5, 2012Inventor: Frederick R. Guy
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Publication number: 20120148985Abstract: A method for machining a dental prosthesis that reduces the likelihood of forming tool failure includes machining a workpiece to form a top surface and a side surface of the dental prosthesis, machining a connector between a proximal end of the dental prosthesis and a proximal end of the workpiece, and machining a bottom surface of the dental prosthesis with a spiral tool path.Type: ApplicationFiled: December 9, 2010Publication date: June 14, 2012Inventors: Yunoh Jung, Daniel Yonil Jung
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Patent number: 8195320Abstract: The system, object of the invention consists of a unit for scanning a mould produced from the sample from a patient's mouth, an image which is sent to digital generation equipment of a removable dental prosthesis, producing a file that is transmitted to metal piece manufacturing equipment by means of sintered powder applying a high-energy ray. The design stages consist of the relief of the mould, the calculation of the insertion axis, the paralleling of the teeth, designing of the elements or components of the prosthesis such as lattice, clamp, stop, major connector, minor connector, bristle, pearls, lingual bars, extrusion of the different elements designed, smoothing of the sharp edges, elimination of the superpositions of the different elements designed and conversion of a closed continuous connected surface to a three-dimensional one.Type: GrantFiled: March 8, 2007Date of Patent: June 5, 2012Inventor: Juan Carlos Garcia-Aparicio
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Publication number: 20120135373Abstract: A dental positioning stent for drilling an implant hole and a manufacturing method, a using method and components for the same are provided. The manufacturing method includes: slicing a tooth mold and a false tooth model along a preset slice plane; fixing two markers in the preset slice plane on two sides of the false tooth model respectively; covering the markers and the false tooth model with a shaping agent to form a positioning stent; putting the positioning stent on the teeth in a mouth to perform tomography imaging to acquire a slice image of the preset slice plane; mounting a positioning aid having a positioning hole in the positioning stent according to the slice image pasted up on the tooth mold to guide an initial drill. A dental positioning stent for tomography imaging, and a manufacturing method, a using method, and components thereof are provided.Type: ApplicationFiled: November 22, 2011Publication date: May 31, 2012Inventors: Po-Kun Cheng, Chia-Yun Cheng, Chia-Yu Cheng, Chao-Hsiang Cheng
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Patent number: 8177900Abstract: Gypsum-based molding materials are customized by hydrating the molding material to workable (malleable) consistency with a moistening solution containing 0.001 to 60% polytetrafluoroethylene. The addition of latex results in a more flowable material.Type: GrantFiled: June 14, 2007Date of Patent: May 15, 2012Assignee: Cbite, Inc.Inventor: Jose Walter
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Publication number: 20120107771Abstract: The present invention is a removable partial dental prosthesis comprised of a plastic framework. One or more acrylic prosthetic teeth are chemically bonded to the framework using dental acrylic.Type: ApplicationFiled: November 1, 2010Publication date: May 3, 2012Inventor: Carol Hrenak
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Patent number: 8110035Abstract: An integrated dental porcelain system for making dental prostheses and restorations is provided. The system includes three universal major components: a) opaque porcelain composition; b) pressable dentin ingot; and c) veneering porcelain composition that can be used interchangeably for making restorations. Techniques for making the prostheses and restorations include porcelain fused-to-metal (PFM), press-to-metal (PTM), and either pressed and/or machined all-ceramic methods. The system uses both a hand-layering of veneering porcelain (PFM technique) and a hot-pressing process (PTM and all-ceramic technique) to fabricate the prostheses and restorations.Type: GrantFiled: May 30, 2008Date of Patent: February 7, 2012Assignee: DENTSPLY International Inc.Inventors: Christopher Chu, Slawomir Banasiak, Victoriya Shtessel-Nemzer
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Publication number: 20120015327Abstract: The present invention relates to a composition for attaching a dental facing on a dental support structure comprising water, a glass and/or glass ceramic material, a rheological modifier with a molecular weight above about 500,000. The invention also relates to a process comprising the steps: providing a dental facing precursor and a dental support structure, both having an upper and a lower surface, attaching the dental facing precursor with its lower surface to the upper surface of the dental support structure, comprising the step of placing a mating composition between the lower surface of the dental facing precursor and the upper surface of the dental support structure and to the use of the inventive composition for producing dental restorations.Type: ApplicationFiled: February 24, 2010Publication date: January 19, 2012Inventors: Bernd K. Burger, Holger Hauptmann, Gallus Schechner
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Patent number: 8092220Abstract: A method for the reconstruction of missing, broken and/or abraded teeth by means of face analysis. In order to determine the shapes and sizes of the teeth, the face of a patient, for whom the teeth are intended, is measured by means of one or more image-type pictures. The respective tooth size and tooth shape is determined proportionally from the obtained values.Type: GrantFiled: December 14, 2007Date of Patent: January 10, 2012Inventor: Manfred Wiedmann
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Publication number: 20110318709Abstract: An artificial tooth where an occlusal surface is formed by grinding has a reference point that represents a position and an angle of the artificial tooth when an occlusal surface of the artificial tooth is obtained by an occlusal-surface form measuring apparatus. The reference point is a convexed spherical surface or a concaved spherical surface arranged on the occlusal-surface. The spherical surface is 3 or more. The convexed spherical surface is fit to the concaved spherical surface when the maxillary artificial tooth and mandibular artificial tooth are occluded. The occluding portion of the artificial tooth has a grinding portion.Type: ApplicationFiled: June 24, 2011Publication date: December 29, 2011Inventors: Takeshi MORIYAMA, Yusei Kadobayashi
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Patent number: 8057231Abstract: A direct resin veneer (2) for creating a veneer on a tooth surface comprising a thin planar expanse of an uncured restorative material, or direct resin veneer (4). The veneer (4) has a generally tooth configuration that is generously sized to permit adequate coverage for any tooth. Adhered to at least one side of the restorative material is a flexible pliant non-sticky planar sheath (6). The sheath (6) material has a curved gingival arch contour (10) for gum line alignment and various tab-like protrusions that permit placement upon a tooth. An inferior peeling tab (12) allows for sheath to be separated from the resin veneer (4) subsequent to tooth surface placement. And the lateral grasping tabs (16) permit delivery to a tooth's surface.Type: GrantFiled: November 24, 2007Date of Patent: November 15, 2011Inventor: Brian D. Viscomi
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Publication number: 20110262885Abstract: A surface mapping and generating device which has devices for the process and/or cost optimization, in particular raw material recovery devices, an automatic control of the intensity of a used laser light, devices for carrying out a calibrating procedure by evaluating overlap errors at matching points, devices for archiving especially three-dimensional data of the jaw and/or for modeling the bite position of the upper and the lower jaws, devices for the optimized preparation of at least one dental stump for the production and placement of a dental prosthesis thereon and/or devices for taking into consideration the bite position of the upper and lower jaws.Type: ApplicationFiled: July 7, 2011Publication date: October 27, 2011Applicant: Institut Straumann AGInventors: Gerhard Weber, Albert Mehl, Stephan Holzner, Wolfram Gloger
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Patent number: 8021154Abstract: A method for manufacturing one or several dental prostheses, comprising the steps of: performing a rapid prototyping method for manufacturing one or several dental prostheses and subsequent working, such as reworking, of the one or several dental prostheses with a machining method, such as a milling method. In addition, a method for creating a data record which can be used for a rapid prototyping method for manufacturing a dental prosthesis wherein an end data record is obtained from a starting data record, so that in at least one area of a dental prosthesis manufactured with the end data record excess material is provided, compared to a dental prosthesis manufactured with the starting data record.Type: GrantFiled: March 27, 2008Date of Patent: September 20, 2011Assignee: Straumann Holding AGInventors: Stephan Holzner, Gerhard Weber
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Publication number: 20110212419Abstract: A method for producing a tooth replacement and corresponding computer programs and devices are described. The method can comprise generating a tooth replacement having a core and an outer layer which define a boundary surface between each other. To ensure that the prepared tooth replacement is technically acceptable independent of skills and experience of the user and approximate the appearance of a natural tooth, the extension of the boundary surface represents a natural extension of the dentino-enamel junction of a tooth for which the tooth replacement is provided, wherein the extension of the boundary surface (i) is determined based on a recording of the dentino-enamel junction of the tooth for which the tooth replacement is provided, and/or (ii) is determined based on directly or indirectly recorded geometry data of at least a portion of the outer geometry of the tooth for which the tooth replacement is provided.Type: ApplicationFiled: March 1, 2011Publication date: September 1, 2011Inventor: Josef SCHWEIGER
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Patent number: 7988448Abstract: The present invention relates to an aesthetic dental restoration having a layered structure, which dental restoration has the appearance of a natural tooth. In addition, the present invention relates to a method for preparing such dental restorations. Particularly, the invention is based on the control of interaction between opalescence and fluorescence.Type: GrantFiled: April 2, 2009Date of Patent: August 2, 2011Assignee: Dentsply International, Inc.Inventors: Joseph Maria van der Zel, Petrus Gerardus Appelman, Eric Marinus Hermanus Cornelissen, Marcel Andre de Kler, Jurgen Gebhardt
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Patent number: 7985119Abstract: A blank and method for the production of dental shaped bodies in machining equipment having at least two tools located in the machining chamber of the machining equipment, including a corpus of tooth restoration material, from which the shaped body can be carved by means of at least one of at least two tools by material removal. The blank exhibits at least two gages, each of which is in the form of a recess, the geometry of which is such that the tool selected for the cutting operation can be recognized by means of at least one of the gages by reference to its outer contour, the at least two gages being disposed on the blank in such a way that they can be simultaneously engaged by the at least tools when the blank is clamped in the machining equipment for carving purposes.Type: GrantFiled: December 16, 2005Date of Patent: July 26, 2011Assignee: Sirona Dental Systems GmbHInventors: Franz Basler, Peter Fornoff
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Publication number: 20110111372Abstract: A method of forming a temporary tooth by fusing a plurality of polymer pellets. The plurality of pellets are fused and molded into the shape of a tooth. Additionally, the formed tooth shape comprises of a adapter shape that allows the formed tooth to be secured to the adjacent teeth of the space of the missing tooth.Type: ApplicationFiled: November 10, 2010Publication date: May 12, 2011Inventor: Steven James HOWARD
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Patent number: 7918665Abstract: An artificial anterior tooth capable of grinding food is provided. The lingual side of an artificial anterior tooth is provided with a protuberance for forming a frictional surface dented in an arch shape as seen from the mesiodistal direction, and the labial side of an opposite artificial lower tooth is provided with a protuberance for forming a sliding surface abutting the frictional surface and sliding on the frictional surface by a sliding motion of the upper and lower jaws.Type: GrantFiled: December 10, 2009Date of Patent: April 5, 2011Assignee: Kabushiki Kaisha ShofuInventors: Yusei Kadobayashi, Toshihide Fujii