Including Mating Connectors On Denture And Abutment Tooth Patents (Class 433/181)
  • Patent number: 10543068
    Abstract: The present disclosure is directed to denture devices and related technology. A device may include an overdenture including a substructure comprising at least one hinge. The device may further include a dental implant prosthesis configured to be attached to a jawbone and including at least one extensions configured for contacting the at least one hinge of the overdenture to secure the overdenture to the dental implant prosthesis.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: January 28, 2020
    Inventor: Nathan Stobbe
  • Patent number: 10383709
    Abstract: An overdenture bar includes a U-shaped support beam configured to being coupled to a plurality of dental implants and extending generally above the mucus membrane of the gums. The U-shaped support beam has an anterior region and a pair of posterior extensions. At least one portion of the U-shaped support beam includes a plurality of retention elements extending generally normal to an outer surface of the U-shaped support beam in a plurality of directions. A method for producing a dental bar model on a CAD/CAM program to be fitted on a patient's upper or lower gingival surface includes the steps of selecting a longitudinal portion of the bar, adding protrusions to an upper portion of the bar and/or positioning a buccal finish line and a lingual finish between two boundary lines. The boundary lines illustrate the highest and lowest position of the finish lines.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 20, 2019
    Assignee: Nobel Biocare Services AG
    Inventors: David Giasson, Alexandre Gilbert, Ion Dumitrescu, Myriam Manai, Adam Roberts
  • Patent number: 10206767
    Abstract: The invention relates to a temporary dental prosthesis for determining abrasion facets, having at least one prosthetic tooth, in which at least the occlusion surface of the prosthetic tooth or at least one of the prosthetic teeth is made of a material that is abradable such that, within a maximum of 12 weeks of use as a dental prosthesis by a patient, abrasion facets are produced on the prosthetic teeth and are suitable for ascertaining the chewing movements of the jaw of the patient. The invention also relates to a method for determining the chewing movement of a set of teeth from measured abrasion facets, in which a temporary dental prosthesis made of an abradable material is inserted in a patient, and to a method for producing a final dental prosthesis.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: February 19, 2019
    Assignee: Heraeus Kulzer GmbH
    Inventors: Uwe Boehm, Matthias Funk
  • Patent number: 10004577
    Abstract: Transfixed multiple dental prosthesis intended to be attached and fixed to a plurality of dental implants by several transfixing screws, each having a shank with a threaded portion intended to be received by screwing in a respective dental implant. Each transfixing screw is held captive in a respective bore formed in the transfixed multiple dental prosthesis and extending along a respective axial direction. Each transfixing screw is movable in rotation about the axial direction of the respective bore and is movable in translation along the axial direction of the respective bore between a retracted position and at least one screwing position. In the retracted position, the threading of the threaded portion of the transfixing screw does not protrude from the bore.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: June 26, 2018
    Assignee: ANTHOGYR
    Inventor: Hervé Richard
  • Patent number: 9456881
    Abstract: A dental attachment assembly has an abutment portion at the proximal end of a one-piece dental implant (an “abutment portion”), or is an abutment for attachment to a dental implant or to a bar joining two or more dental implants, and a two-part assembly including a metal cap for placement in/attachment to a dental appliance. The cap includes a flanged skirt that projects from the top surface of the cap. A second part, a plastic insert, snaps firmly inside the cap.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: October 4, 2016
    Inventor: Gerald A. Niznick
  • Patent number: 9078720
    Abstract: A denture system comprising: abutments coupled to the fixtures; and a denture to be detachably attached to the abutments, the denture including: a denture base; an artificial tooth supported by the denture base; a plurality of engagement piece members defining slits extending in the up-down direction; and a lid portion connecting end portions of the engagement piece members as well as closing one end of fitting hole in the up-down direction and covering an entire surface of the tip of the abutment, wherein the lid portion configures a part of the denture base, the piece member has a first surface and a second surface, and a grooved allowance portion is provided allowing the piece member to deform and spread in direction from the first surface toward the second surface.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: July 14, 2015
    Assignee: TUM Corporation
    Inventor: Nariyuki Boku
  • Publication number: 20150010885
    Abstract: A system including a method and associated structures creates efficiencies in the manufacture of prosthetic tooth support frameworks. Pre-manufactured teeth with matching internal keys are used in the setup of a patient prototype. Each key includes a shaft, a cervical platform, a retention knob and preferably at least one channel for the expulsion of excess adhesive fluid. The cervical platforms are shaped to provide intimate contact with a base of their respective tooth. The same tooth/key pairs are then used to make a framework pattern from the setup positioning. The pattern can be cast or scanned for direct machining to produce the finished framework.
    Type: Application
    Filed: September 24, 2014
    Publication date: January 8, 2015
    Inventors: Thomas J. Balshi, Stephen F. Balshi
  • Patent number: 8778443
    Abstract: The invention relates to a method for manufacturing implant abutments 9 for dental implants 1, wherein the implant abutment 9 comprises a prefabricated base member 8 for joining the implant abutment to the dental implant 1, and a customized main body 15. The aim of the invention is to simplify this method of manufacturing. To this end, the main body 15 is formed by sintering and/or melting powdery material onto the base member 8 using laser sintering and/or laser melting. The invention relates also to an implant abutment manufactured by such a method.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: July 15, 2014
    Assignee: BEGO Medical GmbH
    Inventors: Ingo Uckelmann, Helmut Laschütza
  • Patent number: 8753118
    Abstract: A system for attaching a natural tooth to a dental implant. The system includes a dental prosthesis and an elastomeric cushion. The dental prosthesis has a first end and a second end. The first end is fixed to a natural tooth and the second end is engaged with a dental implant. The elastomeric cushion is positioned in contact, either directly or indirectly, with at least a portion of the dental implant and at least a portion of the dental prosthesis such that the elastomeric cushion permits movement of the second end relative to the dental implant in response to movement of the natural tooth transferred through the dental prosthesis to the second end.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: June 17, 2014
    Inventor: James Michael Randall
  • Publication number: 20120322025
    Abstract: A dental CAD/CAM device capable of accurately forming a dental coating is provided. The device includes: an intraoral-site measurement section 100 configured to measure 3D shape data on an intraoral site 130 with an OCT probe 150 for obtaining a tomogram of an object using near-ultraviolet light; a treatment-target-tooth 3D shape data acquisition section 200 configured to acquire shape data of a treatment target tooth from 3D shape data obtained by the intraoral-site measurement section 100; and a coating object 3D shape data creation section 300 configured to create 3D shape data on a dental coating such that the dental coating matches the 3D shape data of the treatment target tooth obtained by the treatment target tooth 3D shape data acquisition section 200.
    Type: Application
    Filed: June 17, 2011
    Publication date: December 20, 2012
    Applicant: JAPAN HEALTH SCIENCES FOUNDATION
    Inventors: Nobuyoshi Ozawa, Yasunori Sumi
  • Patent number: 8119061
    Abstract: A method for attaching a metal structure to a dental coping having opposite sides in the preparation or repair of a dental restoration comprising the steps of: (1) forming a dental material composition comprising high-fusing temperature metal particles in a range of between 1-10 weight percent with the high-fusing temperature metal particles having at least 30% thereof selected from the platinum group of metals, low fusing temperature metal particles having a melting temperature below the melting temperature of the high-fusing particles with the low fusing temperature metal particles being present above at least about 90 weight percent of the total composition and being composed primarily of gold, and a small measure of borate fluxes in a range of between 0.1 to 2.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: February 21, 2012
    Inventors: Itzhak Shoher, Aharon Whiteman
  • Patent number: 7491059
    Abstract: A connecting apparatus for connecting an item, especially a dental prosthetic device, with an anchor tooth or a crown in the mouth of a dental patient. The connecting apparatus includes a first interconnecting element (14, 16) for connecting the dental prosthetic device with the selected one of the anchor tooth and the crown in the mouth of a dental patient and a second interconnecting element (26, 28). The first interconnecting element (14, 16) includes a positive coupling piece (22, 24) formed of ceramic. The second connecting element is a negative coupling piece (26, 28) comprised of glass fiber reinforced synthetic material, at least in a wear region thereof which lies against the first interconnecting element 14. The positive and negative coupling pieces are securable to one another in a mated shape closure manner.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: February 17, 2009
    Assignee: Ivoclar Vivadent AG
    Inventors: Hans-Peter Foser, Eugen Gassner
  • Patent number: 6986661
    Abstract: The object of this invention is to provide a pin-retained inlay bridge and process of making and fitting such a bridge to a patient. This inlay bridge (100) is firmly fixed to the abutment teeth (200) using a plurality of tapered pins (p) driven into the pinholes (220) of the teeth (200) through the locking holes (121) of the inlays (120) of the bridge (100) after bonding the inlays (120) to the inlay cavities (210) of the teeth (200). This bridge (100) thus minimizes the size of the inlay cavities (210). This bridge thus protects the abutment teeth, and prevents the abutment teeth from being decayed by food which gets stuck between the bridge and the abutment teeth. The present invention also simplifies the process of making and fitting such inlay bridges as well as reduces the operational cost during a dental treatment using bridges.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: January 17, 2006
    Inventor: Seung-Ki Kim
  • Patent number: 6981871
    Abstract: A dental attachment assembly has an abutment member for attachment to a tooth root, implant, adjacent tooth, or bar, and a retention member for hinged engagement in a cap secured in a dental appliance. A skirt projects from one end of the cap for releasable snap engagement over an outer locating surface on the abutment member. The outer locating surface has at least two axially spaced retention surfaces for mating, snap engagement with corresponding spaced snap engagement formations on the inner surface of the cap, to provide a stacked, external retention between the abutment and retention members.
    Type: Grant
    Filed: July 5, 2002
    Date of Patent: January 3, 2006
    Assignee: Zest Anchors, Inc.
    Inventors: Scott Mullaly, Paul T. Zuest
  • Patent number: 6916178
    Abstract: An apparatus and method are described for splinting teeth, the apparatus comprising a splint formed from a flat and relatively think rigid sheet, with two support prongs extending in opposite directions from each other and connected by an arch portion. The method is comprised of applying the splint, in aligned grooves cut into the labial or lingual surface of two adjacent teeth, each groove being large enough to accommodate the splint. The grooves are partially filled, with a flowable resin and the splint is then embedded in the composite resin in the grooves.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: July 12, 2005
    Assignee: Eastflex Corp.
    Inventor: Maris Lans
  • Patent number: 6821122
    Abstract: A connection element for attachment of the movable dentures at tooth crowns or at tooth implants with a locking bolt (R) shiftable supported perpendicular to the pullout direction of the denture, wherein the locking bar (R) with its parts effective for the locking is guidable by the force of one or several springs (F) as seen from the pullout section of the denture under regions of one fixedly seated element (S) formed at one or several tooth crowns or, respectively, one or several tooth implants and wherein the locking element is again removable out of these regions by actuation of a pushbutton (D) acting onto the locking bar (R) with the parts of the locking bar effective for the locking and against this spring force, wherein a locking device (A) is furnished for the locking bar.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: November 23, 2004
    Assignee: ZL Microdent - Attachment GmbH & Co KG.
    Inventor: Stefan Wintermantel
  • Publication number: 20040014007
    Abstract: An assembly of denture bridge includes a lingual restoration and a buccal restoration so as to install a denture to the place where a tooth is missing. The buccal restoration has two wings on two ends thereof so as to contact the inside of the nature teeth and the lingual restoration is formed according the mesio-distal side of the lingual side and the occusal surface. Two lingual restorations are connected to the buccal restoration by a screw so as to secured onto the nature teeth. The nature teeth need not to be remove a lot and the denture can be set within a short period of time. The patient needs not to wear a temporary grown.
    Type: Application
    Filed: January 9, 2003
    Publication date: January 22, 2004
    Inventors: Chin-Sheng Lee, Jenny Lee, Jin-Fung Lee
  • Publication number: 20040005530
    Abstract: A dental attachment assembly has an abutment member for attachment to a tooth root, implant, adjacent tooth, or bar, and a retention member for hinged engagement in a cap secured in a dental appliance. A skirt projects from one end of the cap for releasable snap engagement over an outer locating surface on the abutment member. The outer locating surface has at least two axially spaced retention surfaces for mating, snap engagement with corresponding spaced snap engagement formations on the inner surface of the cap, to provide a stacked, external retention between the abutment and retention members.
    Type: Application
    Filed: July 5, 2002
    Publication date: January 8, 2004
    Inventors: Scott Mullaly, Paul T. Zuest
  • Patent number: 6506052
    Abstract: A system of retrofitting non-dental implant secured dentures with dental implant technology in order to save time and expenses to the denture wearer and to provide a marketing capability that uses the benefits of retrofitted dentures as communicated to denture wearers to convince the denture wearers to receive dental implants. The retrofitting of the said denture comprises of modifying the depression receptacle of the denture base to accept a portion of the exposed part of at least one implant affixed to the denture wearer and to accept a portion of the dental implant securing device. A portion of the dental implant securing device is affixed to the depression receptacle so as to positioned dental implant securing device to reversible attach to at least a portion of the exposed art of at least one implant affixed to the denture wearer when the denture is affixed to the denture wearer.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: January 14, 2003
    Inventor: Larry I. Hoffman
  • Patent number: 6398553
    Abstract: The invention concerns a t-plate for detachable fixing of false teeth components to one another or to the remaining teeth, with a female part that displays a recess, a male part (6) that displays an attachment section (8) that can be brought to engage the recess in the female part and displays a continuous slot (18) that extends at least through the attachment section (8) and divides the latter into two parts (8a, 8b), and a spreading device (22, 24) that spreads the two attachment section parts (8a, 8b) and displays a first spreading means that is arranged in the slot (18) and is situated so as to engage the two attachment section parts (8a, 8b). The special feature of the invention consists in the fact that the spreading device (22, 24) displays at least one additional spreading means (24) arranged in the slot (18) at a distance from the first spreading means (22a).
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: June 4, 2002
    Inventor: Günter Rübeling
  • Patent number: 6394810
    Abstract: Disclosed is a dental prosthesis.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: May 28, 2002
    Inventor: Ki Sun Choi
  • Patent number: 6371762
    Abstract: A ceramic tooth restoration has two neighboring ceramic tooth replacement elements each having a recess. A connecting member is placed into the recesses. A glass paste is provided for anchoring the connecting member in the recesses by sintering at a temperature below approximately 800° C.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: April 16, 2002
    Assignee: Ivoclar AG
    Inventor: Hans-Peter Foser
  • Patent number: 6299449
    Abstract: A permanent dental bridge comprised entirely of one or more types of dental composite material may be constructed directly, i.e., without laboratory assistance, either in situ or ex situ, without reduction of the abutment teeth. The direct composite bridge comprises one or more composite pontics, integrally laminated attachment portions and substructure, and optional embedded reinforcement materials. In the in situ process, composite material is applied between abutment teeth in the patient's mouth, attachment portions are formed from the composite material, those attachment portions respectively attaching to corresponding surfaces on the abutment teeth, and the composite material is cured. The steps of application and curing of composite material are successively repeated until a completed dental bridge, including a pontic portion, is formed entirely within the patient's mouth.
    Type: Grant
    Filed: July 7, 1999
    Date of Patent: October 9, 2001
    Inventor: Ronald Stanley Carlson
  • Patent number: 6299447
    Abstract: A dental attachment assembly has an abutment member for attachment to a tooth root, implant, or adjacent tooth, and a retention member for engagement in a dental appliance. The retention and abutment members are designed for releasable snap engagement to secure the members together. A skirt projects from the upper end of the retention member and snap engages over an outer locating surface of the abutment member as the members are secured together, acting to align the retention member with the abutment members.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: October 9, 2001
    Assignee: Zest Anchors, Inc.
    Inventors: Paul T. Zuest, Scott Mullaly
  • Patent number: 6250925
    Abstract: An improved dental prosthesis for replacing a tooth or teeth in an edentulous space in a patient's mouth either adjacent to existing teeth or between a first tooth anterior of and a second tooth posterior of the edentulous space which tooth or teeth are prepared with occlusal mounting grooves and where indicated indentations on the respective buccal and lingual proximals of the same tooth or teeth for receiving said dental prosthesis; has multi-section infrastructure for fabricating the dental prosthesis which includes, a main support bar or beam having a sized and shaped center section and at least one connecting end for fastening the main support bar on the tooth or teeth adjacent the edentulous space, the connecting end or ends has a predetermined shape, material and is sized to permit adjustment thereof as a function of the mesial-distal length of the edentulous space and the relative position of the tooth or teeth adjacent the edentulous space, secondary support means operatively connected to the ma
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: June 26, 2001
    Assignee: Oro-Health International, Inc.
    Inventor: Howard B. Marshall
  • Patent number: 6224374
    Abstract: A dental device for use as a fixed bridge, splint or removable prosthesis attachment. The device includes a bench framework adapted to be bonded to an internal axial surface of a tooth cavity preparation. The device may include one or more pontics for securing between adjacent natural teeth. The device may further include two members having mating wells for holding magnets to provide a removable prosthesis.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: May 1, 2001
    Inventor: Louis J. Mayo
  • Patent number: 6056546
    Abstract: Claspless removable partial dentures have a metal bar that connects to a metal framework to which is attached metal occlusal rests. The metal occlusal rests fit into prepared slots in the natural teeth on either side of the edentulous area. This metal framework supports the resilient dental material that bonds the denture teeth in their position and is bonded to the metal framework. This resilient dental material extends into the inward curve of the natural teeth on either side of the edentulous area, and by sliding into the inward curve, the partial is held in position. The metal framework is left open beneath the denture teeth so that each denture tooth can move into the resilient dental material, which then absorbs the force of mastication.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: May 2, 2000
    Inventor: Ambrose B. Van Handel
  • Patent number: 6050820
    Abstract: The pontic support structure comprises a matrix folded to form a horizontal top portion and a vertical bottom portion. Opposed wings extend laterally on either side of the horizontal top portion. Opposed wings extend laterally on either side of the vertical bottom portion. The various wings engage corresponding slots formed in the existing adjacent teeth.
    Type: Grant
    Filed: January 26, 1999
    Date of Patent: April 18, 2000
    Assignee: Eastflex Corp.
    Inventors: Maris J. Lans, Daniel E. Purvis
  • Patent number: 6030219
    Abstract: A dental attachment assembly has an abutment member for attachment to a tooth root, implant, or adjacent tooth, and a male member for hinged engagement in a cap secured in a dental appliance. The male and abutment members are designed for releasable snap engagement to secure the members together. A skirt projects from the upper end of the male retention member and engages an outer locating surface of the abutment member as the members are secured together, acting to align the male member with the abutment members.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: February 29, 2000
    Assignee: Zest Anchors, Inc.
    Inventors: Paul T. Zuest, Scott Mullaly
  • Patent number: 5934907
    Abstract: An improved dental prosthesis for replacing a tooth or teeth in an edentulous space in a patient's mouth either adjacent to existing teeth or between a first tooth anterior of and a second tooth posterior of the edentulous space which tooth or teeth are prepared with occlusal mounting grooves and where indicated indentations on the respective buccal and lingual proximals of the same tooth or teeth for receiving said dental prosthesis; has multi-section infrastructure for fabricating the dental prosthesis which includes, a main support bar or beam having a sized and shaped center section and at least one connecting end for fastening the main support bar on the tooth or teeth adjacent the edentulous space, the connecting end or ends has a predetermined shape, material and is sized to permit adjustment thereof as a function of the mesial-distal length of the edentulous space and the relative position of the tooth or teeth adjacent the edentulous space, secondary support means operatively connected to the main su
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: August 10, 1999
    Assignee: Oro-Health International, Inc.
    Inventor: Howard B. Marshall
  • Patent number: 5888068
    Abstract: The invention is directed to an intracoronally supported pontic which is uniquely anchored between two existing teeth by means of two wings which engage within slots or indentations prepared in the two existing teeth. The engaging wings are disposed on either side of a matrix around which the pontic is formed and which supports the pontic when positioned between the existing teeth. The invention further concerns the method of forming the pontic around the supporting matrix and installing it in the patient's mouth.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: March 30, 1999
    Assignee: Eastflex Corp.
    Inventors: Maris J. Lans, Daniel E. Purvis
  • Patent number: 5888218
    Abstract: An osteo-integrated implant utilizes a metal seal formed on the outer diameter of the implant components spaced axially from the annular seat or junction of the components. The sealing surface of one component is machined on the internal diameter of a counter-bored cylindrical member extending over the junction to engage the outer diameter of the other component. The mating surface is formed on the outer diameter and is machined such that an interference fit exists between the two surfaces when the abutment is fully seated in the implant. The design allows for both radial and axial micro motion without compromise to the sealing effectiveness.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: March 30, 1999
    Assignee: Folsom Metal Products
    Inventor: Aubrey Clint Folsom
  • Patent number: 5803737
    Abstract: A system for constructing temporary bridges to fill edentulous spaces found between a pair of abutment teeth in a human mouth is disclosed. The system contemplates selecting an appropriate prefabricated temporary bridge mold from a selection of pre-sized molds. The portion of the prefabricated temporary bridge mold which corresponds to the edentulous space and flanking abutment teeth is selected and cut away and retained as a mold subsection. The mold subsection is then filled with acrylic mix, and placed on top of the edentulous space and flanking abutment teeth such that the flanking abutment teeth form hollowed cavities in the cast temporary bridge which is formed upon the hardening of the acrylic mix.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: September 8, 1998
    Inventor: Oleg Lyalin
  • Patent number: 5791900
    Abstract: A temporary tooth construction 10 for attachment to portions of permanent teeth 101, 102 on opposite sides of a gap formed by at least one missing tooth. The temporary tooth construction 10 includes a tooth members 20 provided with a pair of anchor member 30 on opposite sides of the tooth member 20 wherein each anchor member 30 releasably engages portions of the permanent teeth 101, 102 on opposite sides of a gap formed by a missing tooth.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: August 11, 1998
    Inventor: Robert J. deBoisblanc
  • Patent number: 5772438
    Abstract: A method for installing a permanent bridge over a gincival crest between a pair of abutment teeth posterior to the canines, comprising a) providing a rigid infrastructure having two wings, the infrastructure being sized to extend in between and inside the abutment teeth; b) processing the abutment teeth to form retentive dental cavities large enough to receive the wings of the infrastructure; c) applying a resistant composite to the bottom of the infrastructure, curing the resistant composite that is so applied so as to fix the resistant composite to the infrastructure and thus to form a bridge, processing the bridge to remove imperfections and placing each of the wings of the infrastructure into the corresponding cavity to ensure that the so formed bridge fits over the gingival crest; d) fixing the wings of the infrastructure embedded into the formed bridge to the dental cavities of the abutment teeth by means of an adhesive; and e) filling the occlusal part of the bridge with an additional resistant composi
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: June 30, 1998
    Assignee: Deom Design Inc.
    Inventor: Guy Deom
  • Patent number: 5735688
    Abstract: Attachment are used with a mandibular distraction device for use in distracting the mandible subsequent to corticotomy thereof. First and second sets of crowns of the device are adapted to be attached to the bicuspid and molar teeth of respective opposite lateral sides of the mandible. A first pair of expander assemblies are removably or fixedly attachable to the opposite sides of the first set of crowns, and a second pair of expander assemblies are removably or fixedly attachable to the opposite sides of the second set of crowns. Each pair of expander assemblies includes one expandable device and one sliding tube assembly. The attachments include receptor attachments that are provided to be attached to the bicuspid crowns and the molar crowns, and corresponding connector attachments that are provided to be attached to the screw devices and sliding tube assemblies for connection thereof to the crowns.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: April 7, 1998
    Inventors: Yan Razdolsky, Patrick John Driscoll
  • Patent number: 5678997
    Abstract: An attachment system for securing to a mounting bar a denture having a plastic base formed with a groove. The system has a generally C-section plastic rider engaged over the bar, having an outer surface with a predetermined outside cross-wise dimension, and engaged in the groove. An elastically deformable liner element of a material substantially harder than the plastic of the rider and of the base is imbedded in the base and forms an inner surface of the groove engaging the outer surface of the rider. The liner element defines a mouth opening having an inside width slightly Smaller than the outside cross-wise dimension of the rider so that the rider can only move into and out of the groove with deformation of the rider and/or of the liner element.
    Type: Grant
    Filed: June 29, 1995
    Date of Patent: October 21, 1997
    Assignee: Ceka N.V.
    Inventor: Vincent De Buck
  • Patent number: 5678996
    Abstract: The present invention is a precision attachment device for securing a removable dental prosthesis in the mouth, comprising a first section operatively arranged to be secured to a fixed tooth, a second section operatively arranged to be secured within the prosthesis, and also arranged to matingly engage the first section, the second section having a first mating member having a throughbore therein, and also having an elongated casing rotatably disposed within the throughbore of the first mating member; a spring loaded plunger member disposed within the casing and projecting therefrom, and, a retention member within the rotatable casing for limiting the extent of longitudinal travel of the plunger member.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: October 21, 1997
    Inventor: Peter E. Dawson
  • Patent number: 5634792
    Abstract: A kit whose contents permit a denture wearer to repair their own dentures. The kit contains replacement teeth, a liquid monomer and a powdered polymer which when added together form a putty-like acrylic, a pipette for dispensing the liquid, a specially designed grinding and filing tool, a piece of emery paper, and a strip of wax used for temporarily bridging a loose tooth to a fixed tooth. Instructions explaining a method for repairing both simple and complex denture fractures, as well as replacing broken or lost denture teeth are also included in the kit. The methods each utilize the specially designed grinding and filing tool.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: June 3, 1997
    Inventor: Frank R. C. Brisendine
  • Patent number: 5458489
    Abstract: A prefabricated tooth replacement assembly includes a cap adapted to be secured upon an abutment, a replacement tooth for occupying a void in the patient's mouth, and an interlock for supporting the replacement tooth from the cap in a selected position of adjustment relative thereto. The interlock is provided by forming an opening in the replacement tooth, forming a lateral protrusion on the cap, and selecting the configuration of the parts such that the protrusion from the cap frictionally engages the opening in the replacement tooth. Further, the replacement tooth is made at least partially hollow, and the protrusion from the cap extends into its hollow interior and is then locked in place by bonding material filling the hollow interior.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: October 17, 1995
    Inventor: Philip C. Tennyson
  • Patent number: 5413480
    Abstract: An overdenture attachment system for selectively attaching a denture element to a post in a tooth or a root canal is provided. The system includes a keeper element which is designed to be permanently affixed to the denture element and a cap element that is designed for attachment to the post of the tooth or root canal and which is coupled to or received by the keeper element. In the preferred embodiment, the keeper element is formed with a flange portion in which the insert element is selectively received. The interior of the flange portion of the keeper element is threaded and the exterior of the cap element is correspondingly threaded in order to enable threaded engagement of the cap element inside the keeper element.
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: May 9, 1995
    Assignee: Essential Dental Systems, Inc.
    Inventors: Barry L. Musikant, Allan S. Deutsch, Brett I. Cohen
  • Patent number: 5284441
    Abstract: Patent of invention of a precision device for attaching removable dental prosthesis, designed for the upper and lower dental arch free ends, consisting of a fixed male member and a removable female member, capable of absorbing, when engaged through an overlapping movement, all masticatory force due to gingival occlusive movement and therefore transferring it in a distributed manner over the mucous membrane on which the removable prosthetic portion is seated, this effect being cause by a dampening element located in the male member, member being made of a rigid material, of little thickness, formed in an approximately rectagular shape, there being two cavities on one of its faces and there being another cavity on the other face, there being, joined to cavity, a slit which engages spring inside said cavity; member consists also of a hollow rigid material piece, whose inner shape is the same as member there being on the inner walls of said member two pins and a recurved pin, positioned so that, during overlappin
    Type: Grant
    Filed: April 28, 1992
    Date of Patent: February 8, 1994
    Inventor: Luis A. De Siqueira
  • Patent number: 5242304
    Abstract: A functional dental appliance system and a method of manufacturing the same. At least one surface mounted undercut is attached to the outer surface of the tooth. The dental appliance is constructed of a semi-rigid material which has a shape generally conforming to a portion of the contour of the tooth and the attached undercut. The semi-rigid material permits the dental appliance to deform temporarily prior to engagement with the portion of the tooth and the attached undercut such that the dental appliance returns to an undeformed state when engaged with the tooth and the attached undercut to form a pressure fit engagement relationship. The dental appliance may be manufactured by attaching a surface mounted dental undercut to the outer surface of a tooth and forming the dental appliance to conform to a portion of the outer surface of the tooth and the attached undercut.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: September 7, 1993
    Assignee: Tru-Tain, Inc.
    Inventors: Lloyd H. Truax, Kevin L. Truax
  • Patent number: 5221205
    Abstract: Disclosed is a bridge which includes a subframe which is provided with a first engaging device, an overcast which is provided with a second engaging device and a locking element which cooperates with the first and second engaging devices to removably affix the overcast onto the subframe. Once the subframe has been anchored to the jaw of a patient, the overcast can be easily unlocked and removed from the subframe without removing the locking element from the overcast.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: June 22, 1993
    Inventor: Peter H. Kuch
  • Patent number: 5221206
    Abstract: Device for producing quick couplings for dental prostheses, of the type which includes at least one substantially spherical male element, which is intended to be monolithically integrated with a fixed part of the prosthesis, and a female element, whose inner shape is complementary to the shape of the male element, which is correspondingly provided on a removable part of said prosthesis, includes a pair of auxiliary bars, made of a calcinable plastic material, which are connectable one on top of the other, and which cooperate so as to define at least one compartment whose shape is complementary to the outside shape of a cap which defines the female element, the bars being arrangeable about the male element in order to obtain a model of a metallic piece of the removable part of the prosthesis to be produced by lost-wax casting.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: June 22, 1993
    Assignee: Rhein 82 S.n.c. di Nardi Ezio & C.
    Inventor: Ezio Nardi
  • Patent number: 5211561
    Abstract: A coupling for removable dental protheses comprising a male member one end of which is constituted by a fixing member, whereas the other end has the shape of a male coupling member and a female portion comprising a rigid casing fixed into the prothesis which houses a resiliently deformable mass provided with a housing intended to receive the male coupling member of the male portion. This resiliently deformable mass is maintained in the casing by a removable ring clipped on the casing so that the replacement of this mass is effected without any intervention on the prothesis.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: May 18, 1993
    Assignee: Metaux Precieux sa Metalor
    Inventor: M. Walter Graub
  • Patent number: 5209660
    Abstract: A dental appliance or prosthesis has its removable member connected to its fixed member by a clamping rib which is engaged in a groove and can have longitudinal wall portions separated from a base by respective slits, bulged outwardly by a cap screw whose shank is threadedly engageable in the base of the rib and whose head bears against conical recesses along inner surfaces of the longitudinal wall portions of the rib.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: May 11, 1993
    Assignee: Si-tec GmbH Dental-Spezial-Artikel
    Inventor: Jurgen Speckmann
  • Patent number: 5171147
    Abstract: A dental bridge having the general configuration of a tooth or teeth, with projecting lateral arms or wings which are gradually tapering lateral extensions of the bridge itself, conterminous with the bridge and formed of the same material as the bridge. The bridge is molded from a heat-polymerizable matrix formed from a resin selected from the group consisting of methacrylates, acrylates, and mixtures thereof. The matrix includes 60-80 wt % of inorganic filler(s). The lateral arms or wings use chemical bonding to engage with the proximal and/or occlusal surfaces of the teeth on either side of the gap in which the bridge is to be inserted.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: December 15, 1992
    Inventor: Richard J. Burgess
  • Patent number: 5120222
    Abstract: The present invention is a dental structure for removably mounting a dental appliance, including a partial denture, bridge, or similar dental appliance in an oral cavity. The dental structure includes an improved male member comprising a substantially cup-shaped body, including a base, a cylindrical wall extending form the base, a projection extending from the base in the same direction as the wall, and a relatively large rectangular stop member that provides a positive contact with an upright wall of a female member. This new and improved feature provides an additional stabilizing contact surface and also serves as a stop surface to prevent the male member from pivoting toward the upright wall of the female member when the male member is fully seated on the female member.
    Type: Grant
    Filed: September 7, 1990
    Date of Patent: June 9, 1992
    Inventor: Josef M. Sulc
  • Patent number: 5092772
    Abstract: A dental proosthetic construction is releasably attached at opposite ends to abutment teeth (T). At least at one end, the attachment is by means of a connector comprising a pin (4) and socket (6). The socket has an opening (10) onto the space between the abutment tooth and the prosthesis, the opening continuing over a side of the socket extending longitudinally of the pin. The pin can thus be engaged in the socket by a relative movement transverse to the pin. The pin and socket are then retained in engagement by a releasable latching arrangement (14). The engagement of the pin and socket permits relative translational movement in a direction that varies the spacing between the abutment tooth and the prosthesis but prevents translational movement in other directions. The engagement also permits relative angular movement between the pin and socket about axes transverse to the direction of the relative translational movement but prevents other angular movements.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: March 3, 1992
    Inventor: Peter Seaton