Having Visual Indicator Or Recorder Patents (Class 433/55)
  • Patent number: 11382726
    Abstract: The present invention is a digital custom denture impression tray that includes an upper U-shaped plate to measure the shape of a patient's upper gum having missing teeth and normal teeth arranged therein; a lower U-shaped plate to measure the shape of the patient's lower gum having missing teeth and normal teeth arranged therein; a height adjustment unit disposed on the upper plate for measuring the height of the denture to be implanted and structured to adjust horizontality and height of the upper plate and the lower plate; a screw nut attached to the height adjustment unit having a threaded hole at a predetermined depth; a screw bolt having a threaded surface to adjust height by being inserted in the threaded hole from under the screw nut; an indicator teeth disposed on the front center of the upper plate for recording centric relation and guiding the upper plate toward the lower plate; a front corresponding cooperation spot provided on the lower plate for receiving the indicator teeth thereon; and a rear
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: July 12, 2022
    Inventor: Joshua Lee
  • Patent number: 11369271
    Abstract: An apparatus for dental imaging comprises a light source for generating light, an optics system for focusing the light, and a light-guiding part having an entrance face and an exit face. The light source, the optics system and the light-guiding part are arranged such that the light passes through the optics system, enters the light-guiding part via the entrance face, and exits the light-guiding part via the exit face. The optics system is configured such that, upon entering the light-guiding part, an outermost chief ray of the light with respect to an optical axis of the optics system is divergent to the optical axis and an outermost marginal ray of the light with respect to the optical axis is parallel or divergent to the optical axis.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: June 28, 2022
    Assignee: Align Technology, Inc.
    Inventors: Yossef Atiya, Tal Verker, Nir Makmel
  • Patent number: 11278387
    Abstract: An occlusion control system and a corresponding method for occlusion control, in which dimensional data of a digital upper and lower jaw model are stored on a data processing and control device, an upper jaw representative model and a lower jaw representative model are manually moved relative to one another in an adjustment plane, position changes of the upper jaw representative model and the lower jaw representative model are detected. An associated relative position between the upper and lower jaw models is calculated. If, in this relative position, there is a dental arch penetration and/or a dental arch decoupling from the upper and lower jaw model, a length of at least one of at least three spacer elements between the upper jaw representative model and the lower jaw representative model is adjusted, which brings about a haptically detectable change in the representative model.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: March 22, 2022
    Assignee: Image Instruments GmbH
    Inventors: Tom Kuehnert, Rolf Kuehnert
  • Patent number: 10596699
    Abstract: The present invention is concerned with an apparatus for simulating the chewing process for the purpose of testing dental materials and implants and for the purpose of analyzing food samples. The apparatus comprises a frame, a stationary platform connected compliantly to the said frame and a moving platform corresponding to the maxillae and mandible of humans or animals, to which dentures or teeth are affixed. The moving platform is guided and driven in mandibular motion using six rods fitted with spherical joints at both ends. Said ball-jointed rods are attached with one end to the moving platform, and with the other end either to the frame of the apparatus, or to rotary cranks driven synchronously by a motor via a transmission. The rotary cranks together with their motor and transmission are mounted on a carrier which is adjustably attached to the frame of the apparatus.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: March 24, 2020
    Inventor: Petru Aurelian Simionescu
  • Patent number: 10426581
    Abstract: The Modular system for the realization of orthodontic Gipsoteca models with the faithful tilting of the individual occlusal plane and mobile and fixed prostheses and other orthodontic aids such as bites or splints, comprises a first module consisting of a supporting device (1) and additional aids, such as bases, muffles, little frames, curved and flat plates, a base for the transfer of static relationships between the dental arches, the individual face bow and the injection piston, suitable to make up, in combination with the device (1), additional modules. The present invention allows to facilitate different dental, processing techniques and reduce processing times and possible errors caused by the realization and the squaring of the artifact.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: October 1, 2019
    Assignee: Ortolab Pompei S.R.L.
    Inventor: Aniello Bianco
  • Patent number: 10350038
    Abstract: Dental articulator systems and dental articulators are disclosed herein. The disclosed dental articulator systems comprise a bite registrator, a dental articulator and a mounting jig. The bite registrator comprises a buccal rail configured to be positioned along the exterior perimeter of a patient's dentition; at least one vestibular component supported by and slidable along the buccal rail for identifying a reference position; and at least one bite registration module supported by and slidable along the buccal rail, and forming an aperture through which bite registration material may be injected into the patient's dentition. The dental articulator comprises an upper articulator member for mounting a maxillary dentition model, and a lower articulator member for mounting a mandibular dentition model. The mounting jig is configured to receive the bite registrator and indicate proper alignment of the position the maxillary dentition model and the mandibular dentition model with respect to one another.
    Type: Grant
    Filed: November 5, 2017
    Date of Patent: July 16, 2019
    Inventor: Austin H. Sampson
  • Patent number: 9320578
    Abstract: An articulator can more simply configure a coupling mechanism between a lower jaw support portion and an upper jaw support portion at a joint portion. An articulator includes a first support portion; a second support portion; and a joint portion that couples the first support portion and the second support portion. The joint portion includes: a pair of projecting portions; and an engaging support portion. The projecting portion and the engaging support portion are attractable to each other by way of magnetic force.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: April 26, 2016
    Assignee: NISSIN DENTAL PRODUCTS INC.
    Inventor: Yasuhiko Kuwamura
  • Patent number: 9101498
    Abstract: A system for sizing an oral appliance includes a right overlay, a left overlay, and a wax bite plate. A dental arch impression of a patient is taken on the wax bite plate, and indicia on the right and left overlays are aligned with the dental arch impression to provide information on both the arcuate shape and width of an oral appliance which can best fit the patient.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: August 11, 2015
    Assignee: APNICURE, INC.
    Inventors: Jonathan L. Podmore, Kenneth Mejia, Gad Amit, Jacqui Belleau
  • Publication number: 20140220504
    Abstract: The present invention relates to an articulator. The articulator may significantly improve the coupling force between a maxillary fixing part and a mandibular fixing part. In addition, since the horizontal turning radius of the maxillary fixing part is easily adjustable according to the size of a mandible model, errors that may occur when the state of occlusion between the mandible model and a maxillary model is checked may be easily prevented.
    Type: Application
    Filed: July 24, 2012
    Publication date: August 7, 2014
    Inventor: Se Hun Kim
  • Patent number: 8753119
    Abstract: A mounting method of dental cast is disclosed. The mounting method includes the steps of providing an articulator and a label module having at least a label and at least a reference object, generating a label coordinate information in accordance with the reference object and the label, providing a midface and mandible image information and generating a landmark coordinate information in accordance with a plurality of landmarks of the midface and mandible image information, generating a structure coordinate information in accordance with a plurality of structures of the articulator and the label, disposing a first dental cast connected with the label module on the articulator, and providing a detecting device to detect the label and adjust the position of the first dental cast in accordance with the midface and mandible image information, the label coordinate information, and the structure coordinate information.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: June 17, 2014
    Assignee: National Cheng Kung University
    Inventors: Jing-Jing Fang, Tung-Yiu Wong, Chia-Chang Tsai, Tai-Hong Kuo
  • Patent number: 8747110
    Abstract: An orthognathic planning system applied with at least a dental cast includes an articulator, a detecting device, at least a label module and a data processing device. The dental cast is mounted on the articulator. The detecting device is disposed with respect to the articulator. The label module has at least a label and is disposed on the dental cast. The data processing device is signally connected with the detecting device and stores midface and mandible image data. The detecting device traces the label and provides position data, and the data processing device provides orthognathic planning data in accordance with the position data and the midface and mandible image data. The present invention also discloses an orthognathic planning method.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: June 10, 2014
    Assignee: National Cheng Kung University
    Inventors: Jing-Jing Fang, Tung-Yiu Wong, Tung-Chin Wu, Tai-Hong Kuo
  • Publication number: 20140120494
    Abstract: A head frame apparatus is secured to a human head during maxillofacial surgery and includes devices to easily position and secure an endotracheal (breathing) tube and an anesthesia delivery circuit for the patient that reduces the likelihood that the flow of oxygen through the tube is restricted thereby reducing the risk of severe injury or death. The head frame apparatus also includes a removable reference indicator, which may be easily attached and removed while identifying a reference point of the patient's face. Also the reference indicator includes a universal joint and pointer with an attached ruler. A transport apparatus positions multiple preset reference indicators and allows for preoperative transportation and removal, while protecting the preset reference indicators from inadvertent adjustment. A bendable reference indicator used in an articulator for preoperative modeling allows for easily identifying reference points in a cast model.
    Type: Application
    Filed: October 26, 2012
    Publication date: May 1, 2014
    Inventor: Martin Chin
  • Publication number: 20130011808
    Abstract: A mounting method of dental cast is disclosed. The mounting method includes the steps of providing an articulator and a. label module having at least a label and at least a reference object, generating a label coordinate information in accordance with the reference object and the label, providing a midface and mandible image information and generating a landmark coordinate information in accordance with a plurality of landmarks of the midface and mandible image information, generating a structure coordinate information in accordance with a plurality of structures of the articulator and the label, disposing a first dental cast connected with the label module on the articulator, and providing a detecting device to detect the label and adjust the position of the first dental cast in accordance with the midface and mandible image information, the label coordinate information, and the structure coordinate information.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 10, 2013
    Inventors: Jing-Jing FANG, Tung-Yiu Wong, Chia-Chang Tsai, Tai-Hong Kuo
  • Publication number: 20130011809
    Abstract: An orthognathic planning system applied with at least a dental cast includes an articulator, a detecting device, at least a label module and a data processing device. The dental cast is mounted on the articulator. The detecting device is disposed with respect to the articulator. The label module has at least a label and is disposed on the dental cast. The data processing device is signally connected with the detecting device and stores midface and mandible image data. The detecting device traces the label and provides position data, and the data processing device provides orthognathic planning data in accordance with the position data and the midface and mandible image data. The present invention also discloses an orthognathic planning method.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 10, 2013
    Inventors: Jing-Jing FANG, Tung-Yin Wong, Tung-Chin Wu, Tai-Hong Kuo
  • Publication number: 20120295219
    Abstract: This patent application refers to a mechanical equipment that, when used in conjunction with a device to determine the position of the superior arcade of the patient, based on landmarks on the skull of the same, allows accurate reproduction of the position of the dental arches, represented by plaster models and simulation of mandibular movements. These models are connected to the equipment, through a unique positioning mechanical system, eliminating the use of plaster to fix the same. The patent, now required, includes features of the equipment currently called “articulator” and “face-bow” and adds new features in an unprecedented and innovative way. The set of the equipment is light weighted, and easy to handle, allowing up to 50% reduction in the time required for assembly and adjustments when compared to the equipment market, and its guide system makes the reproduction of mandibular movements very accurate, avoiding errors in diagnosis and treatment.
    Type: Application
    Filed: July 26, 2010
    Publication date: November 22, 2012
    Inventors: Jorge Avelino Monteiro Geras, Edeli De Mare
  • Publication number: 20120015321
    Abstract: A jaw-relation reproduction condition is determined by measuring a jaw movement of a patient, and reproducing a jaw state of the patient on an occlusion-state reproducing apparatus in accordance with the jaw-relation reproduction condition. Dentures are arranged on the apparatus in accordance with the jaw-relation reproduction condition to prepare pre-grinding dentures. Denture data with reference points which is three-dimensional image data containing reference points that represents a positional relationship between the jaw-relation reproduction condition and the dentures and an occlusal surface of the dentures. An occlusion state of the denture data with the reference points is reproduced by using the jaw-relation reproduction condition on a three-dimensional image. Grinding data of a grinding portion is determined under a dynamic condition or set condition from a portion surrounded by an image of upper and lower jaws on the three dimensional image in a reproduced occlusal state.
    Type: Application
    Filed: June 24, 2011
    Publication date: January 19, 2012
    Inventors: Takeshi MORIYAMA, Yusei Kadobayashi
  • Patent number: 8035637
    Abstract: A scanning system that acquires three-dimensional images as an incremental series of fitted three-dimensional data sets is improved by testing for successful incremental fits in real time and providing a variety of visual user cues and process modifications depending upon the relationship of newly acquired data to previously acquired data. The system may be used to aid in error-free completion of three-dimensional scans. The methods and systems described herein may also usefully be employed to scan complex surfaces including occluded or obstructed surfaces by maintaining a continuous three-dimensional scan across separated subsections of the surface. In one useful dentistry application, a full three-dimensional surface scan may be obtained for two dental arches in occlusion.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: October 11, 2011
    Assignee: 3M Innovative Properties Company
    Inventor: Ilya A. Kriveshko
  • Patent number: 7950923
    Abstract: An occlusal plane analyzer (5) is composed of an analysis board (7) made of a magnetic material and held above a lower jaw model (2), a magnet (8) which can attract the analysis board (7) with magnetic force and which has a circular support hole (15) going through in an attraction direction of the magnetic force, and a Monson curve imparting tool (9) composed of a spherical body section (17) which is made of a magnetic material with a diameter larger than an inside diameter of the support hole (15) and which can be attracted to the support hole (15), an extended section (18) extending from the spherical body section (17), and a spherical surface regenerating section (19) further extending from a distal end of the extended section (18) for drawing a circular arc concentric with the spherical body section (17).
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: May 31, 2011
    Assignee: Kabushiki Kaisha Shofu
    Inventors: Kaoru Koide, Iori Saitoh
  • Patent number: 7940260
    Abstract: A scanning system that acquires three-dimensional images as an incremental series of fitted three-dimensional data sets is improved by testing for successful incremental fits in real time and providing a variety of visual user cues and process modifications depending upon the relationship of newly acquired data to previously acquired data. The system may be used to aid in error-free completion of three-dimensional scans. The methods and systems described herein may also usefully be employed to scan complex surfaces including occluded or obstructed surfaces by maintaining a continuous three-dimensional scan across separated subsections of the surface. In one useful dentistry application, a full three-dimensional surface scan may be obtained for two dental arches in occlusion.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: May 10, 2011
    Assignee: 3M Innovative Properties Company
    Inventor: Ilya A. Kriveshko
  • Publication number: 20100233647
    Abstract: A system and a method for manufacturing a dental implant surgical guide are disclosed. The dentist may obtain a cast model of the patient's jaw and then make a CT scan appliance with a plurality of radiopaque markers out of the cast model. The patient wears the appliance under CT scanning to obtain a plurality of CT images of the jawbone and teeth. The system comprises a cast model navigation device, a controlling module, and a computer system. The navigation device comprises an articulated arm capable of holding a tool and a plurality of braking elements. The computer system comprises a memory storing a software program and a processor. The articulated arm is operated to measure the positions of the markers to provide the position registration between the cast model and the plurality of CT images. Once registered, the articulated arm is operated to simulate the target implant position under the guidance of the CT images.
    Type: Application
    Filed: March 12, 2010
    Publication date: September 16, 2010
    Inventor: Been-Der Yang
  • Publication number: 20100092909
    Abstract: A visible coding of components of an articulator apparatus that mount maxillary and mandible casts indicates the relative correspondence between post-treatment goals and the present locations of a person's teeth and jaws. From another aspect, the visible coding indicates at least a direction, and preferably, a direction and a distance, which a person's teeth and/or jaws must be moved to achieve the goals.
    Type: Application
    Filed: December 8, 2009
    Publication date: April 15, 2010
    Inventor: Lawrence F. Andrews
  • Publication number: 20090155737
    Abstract: To provide a dental surveyor apparatus that is especially used for processing comprehensively both clasp design and basal design of fabricating removable dentures, which is enable to place and remove easily and is secure after inserting.
    Type: Application
    Filed: September 15, 2006
    Publication date: June 18, 2009
    Inventor: Nobuyuki Iba
  • Patent number: 7544060
    Abstract: The dental device of the present invention is used to transfer information about registration of an anterior midline between central incisors and a horizontal plane of the teeth after the teeth have been drilled and final impressions have been taken. This information is communicated to the lab technician for fabrication of crowns and or veneers. The dental device allows the dentist to consistently communicate the location and position of the anterior midlines and horizontal plane to the dental laboratory. The dental device is placed between the patient's upper and lower teeth after tooth preparation. The dental device is positioned in a correct midline and horizontal plane. After alignment, the dental device is secured to the teeth using a bite registration material. The dental device is forwarded to the lab technician together with the model of the teeth after preparation.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: June 9, 2009
    Inventor: Carlos Meulener
  • Publication number: 20080090201
    Abstract: A visible coding of components of an articulator apparatus that mount maxillary and mandible casts indicates the relative correspondence between post-treatment goals and the present locations of a person's teeth and jaws. From another aspect, the visible coding indicates at least a direction, and preferably, a direction and a distance, which a person's teeth and/or jaws must be moved to achieve the goals.
    Type: Application
    Filed: October 11, 2006
    Publication date: April 17, 2008
    Inventor: Lawrence F. Andrews
  • Publication number: 20070287124
    Abstract: An image of intraoral bacteria captured under a phase-contrast microscope and an intraoral image taken with a digital camera are recorded and played back to show the patient those images. The present invention shows improvements in this procedure, such as that (1) the phase-contrast microscope is equipped with a camera of a digital output type, (2) the image of intraoral bacteria and the intraoral image are associated with each other, and (3) at least the intraoral image can be edited.
    Type: Application
    Filed: May 26, 2006
    Publication date: December 13, 2007
    Inventors: Hidehiko Yamamoto, Takeo Ikeda, Shoji Taguchi
  • Patent number: 6869281
    Abstract: A tooth model occlusion testing device comprises an upper jaw and a lower jaw that pivotally connect to each other. Two tooth model bases are respectively received in the upper and lower jaws, and are provided with a plurality of perforations to insert a tooth model. The upper and lower jaws are thereby capable of turning to an open and occluding position to evaluate the alignment of the upper and lower parts of the tooth model in the occluding position.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: March 22, 2005
    Inventor: Jerry W. Doviack
  • Publication number: 20040214133
    Abstract: An auxiliary tool for an articulator having a lower part and an upper part which is connected with the lower part pivotally around a pivot axis extending transversely of the longitudinal plane of the articulator, there extending forwardly from the lower part a lower articulator arm and from the upper part an upper articulator arm, the auxiliary tool including a stand which is mountable on the inner side on the one articulator arm and has a head section on the side of which towards the other articulator arm there are arranged feeler elements for the sensing of certain surface parts on a jaw tooth model which is positioned on the other articulator arm. In order to increase the possibilities for use of the auxiliary tool, the head section has on its side towards the other articulator arm a positioning calotte.
    Type: Application
    Filed: June 6, 2003
    Publication date: October 28, 2004
    Inventors: Hans Walter Lang, Alfred Straka
  • Publication number: 20040157191
    Abstract: A denture base on which an artificial replacement of teeth is implanted, characterized in that the denture base includes a plurality of dentures arranged and fixed in a plastic or metal foundation, wherein the dentures are arranged along with the occlusion curve expressed based on the central point set up on the resultant line showing the radius of curvature R of the optimal row of teeth obtained from the roentgenogram of a patient's temporal areas of the head, and the direction of the standard resultant of the power produced at the time of occlusion.
    Type: Application
    Filed: December 30, 2003
    Publication date: August 12, 2004
    Inventor: Naoki Nishihama
  • Patent number: 6616449
    Abstract: The invention concerns an articulator for parametering a prosthetic or occlusal directional plane and dentoalveolar stages, for producing dental prostheses. The device includes two planar elements, upper and lower (1, 2), mutually articulated about a horizontal pin (3) parallel to the two planar elements (1, 2) and located above the lower planar element (2). The two planar elements are designed to fix, opposite each other and in contact with each other, a patient's two dental arch models (5, 6), namely an upper model (5) fixed beneath the upper element (1) lower surface and a lower model (6) fixed on the lower element (2) upper surface, and means for defining, between the two elements (1, 2) a plane inclined with respect to the upper element (1) and corresponding to an occlusal plane P between the two models (5, 6). The means defining the inclined plane corresponding to the occlusal plane P are borne by the upper element (1). They include a plate (7) representing the occlusal directional plane P.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: September 9, 2003
    Inventor: Pascal Rocher
  • Patent number: 6582931
    Abstract: A face bow assembly including a face bow having a bite fork portion to carry an index trays to be positioned in a patient's mouth. The bow has outwardly extending wings to enable a dentist to support the bow. A vertical indicator rod mounted to the bow helps align the tray horizontally and the indicator rod vertically to the patient's mid-sagittal, while bite impression material on the tray hardens. The upper index tray is then mounted on a platform on a dental articulator. The platform has an incisal line for alignment with an incisal line(s) for adjustability on the upper index tray. The platform also has vertical or horizontal adjustability with a built-in scale.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: June 24, 2003
    Assignee: Panadent Corporation
    Inventors: John C. Kois, Thomas E. Lee
  • Patent number: 6417881
    Abstract: Cylindrical support 20 having dope prism 2 built therein is rotatably fitted in barrel 23 as a constituent of stomatocamera frame 11. The support 20 has pin 22 erected on its periphery, and the barrel 23 is furnished with guide channel 4 formed along its circumference. The pin 22 pierces the guide channel 4 and protrudes from the periphery of the barrel 23. Protrudent end of the pin 22 is locked to locking channel 6 of operating ring 5 fitted to the periphery of the barrel 23. The dope prism 2 built in the camera frame is rotated by revolving the operating ring 5. Thus, the image can be rotated without the need to revolve the CCD camera frame.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: July 9, 2002
    Assignee: The Yoshida Dental Mfg. Co., Ltd.
    Inventors: Kazuaki Hara, Terumi Takemoto, Shigeo Tamura
  • Patent number: 6386868
    Abstract: A dental articulator (5) capable of reproducing or analyzing a physiological occlusion status by implementing a pressure receiving function and a traction function capable of operating in all the motion directions equivalently provided by a jaw joint function of a living body with a teeth plaster model fitted between upper and lower jaw frames, comprising an occlusal plane table (8) having the same anteversion angle as the occlusal plane oblique angle of a living body; a bite analysis plate (9) on which average positions of a spew center (91) and a posterior motion axis (92) are set at a plurality of positions and they are sketched in pairs with the average positions of the spew center on one side and those of the posterior motion axis on the other side of the plate; an incisal guidance plate (56) in which an inverted conical slope for mapping front-and-rear, right-and-left inclinations of the cusp is cut to allow the tip of an incisal guide to slide; and a transform plate (1) which is fitted using a lower ja
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: May 14, 2002
    Inventor: Kazuya Fujita
  • Patent number: 6186781
    Abstract: This is the apparatus that designs the denture and enable to process complehensively both of the clasp designing and the base designing, and designs the denture which can be inserted smoothly and has the suitable resistant force against taking-off and the bracing force after insertion.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: February 13, 2001
    Inventor: Nobuyuki Iba
  • Patent number: 6050816
    Abstract: The present invention provides a planar light beam orientation device comprising a light source, a beam disperser, and a housing coupled to the light source and holding the beam disperser. The housing is configured to have a beam aperture configured to project a planar beam of light therefrom. The planar light beam orientation device of the present invention is capable of projecting a 360.degree. planar beam of light. The device is particularly useful in the orienting and reorienting of dental casts in a dental surveyor.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: April 18, 2000
    Assignee: Board of Regents The University of Texas System
    Inventors: Rodney D. Phoenix, Robert E. Jones
  • Patent number: 6024563
    Abstract: A device which allows easy observation of discrepancies between the upper and lower jaw comprises an upper bow (100) and a lower bow (200) which separately hold in place an upper jaw model (UM) and a lower jaw model (LM) prepared based on impressions and position these upper and lower jaw models (UM) and (LM) opposite to each other, checker pins (310) in the upper bow (200) which are positioned at a location corresponding to the opening/closing axis of the upper jaw model (UM) and lower jaw model (LM) and along the opening/closing axis, and checker plates (300) in the upper bow (100) positioned in such a manner that their outer surfaces (306) are perpendicular to the opening/closing axis and adjacent to the tips of the checker pins (310).
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: February 15, 2000
    Assignee: Sankin Kogyo Kabushiki Kaisha
    Inventors: Kazuo Shiraishi, Akihiko Tashiro, Tadashi Kimura
  • Patent number: 5743732
    Abstract: The present invention is concerned with apparatus and methods in the field of dentistry and in the field of design and testing of dental fixtures, components and materials. The apparatus comprises a jaw model having a mandible and a maxilla; a loading mechanism, coupled to the jaw model, for imposing an occlusal force on the mandible and maxilla; a mechanism(s), coupled to the mandible of the jaw model, for moving the mandible relative to the maxilla; and a load or force sensing device for sensing occlusal forces on the mandible and the maxilla of the jaw model. The mandible is caused to move laterally and protrusively using electric motors. A strain gauge meter may be coupled to the load sensing device, for measuring and displaying the forces sensed by the sensing device. A digital processor may also be employed for storing and recording the forces measured by the meter.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: April 28, 1998
    Inventor: Jeffrey A. Watson
  • Patent number: 5738515
    Abstract: The present invention generally relates to an apparatus and method for positioning a maxillary dental arch model in a dental articulator to simulate the positioning of a maxillary dental arch represented by the arch model. The arch model may be positioned on a plate having a substantially planar surface with a fulcrum point through which three generally mutually perpendicular axes are aligned. In addition, the plate may be movably mounted to an articulator and adjusted with respect to these axes based upon three linear and three angular measurements related to the positioning of a patient's maxillary dental arch in the patient's skull.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: April 14, 1998
    Inventor: David L. Leever
  • Patent number: 5720612
    Abstract: A method an apparatus for recording and reproducing the path of insertion of a cast on a dental surveyor uses an iterative method to enable rapid equalization of the height of three points on the cast by first rotating the table on which the cast is situated about a spindle supported by two mutually perpendicular pivotal adjustment arms so that a line connecting two of the points a,b is as close as possible to being parallel with a long axis of a generally horizontal one of the pivotal adjustment arms, pivoting the horizontal adjustment arm so that points a,b are at an equal height, pivoting the generally vertical adjustment arm so that point a and a third point c are at an equal height, readjusting the horizontal adjustment arm so that points a and b are again at an equal height, readjusting the vertical adjustment arm so that points a and c are again at an equal height, and so forth until all three points are at the same height.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: February 24, 1998
    Inventor: Jui-Yuan Shih
  • Patent number: 5707233
    Abstract: An articurator is comprised of a mandibular frame being provided with condyles, a maxillary frame mounted on the mandibular frame via condylar guide mechanisms, an anterior guide table provided on the front end of the mandibular frame, and an anterior guide pin provided on the front end of the maxillary frame. The anterior guide table comprises a table portion and lateral wings. The table portion has a sagittal inclination angle adjusting mechanism, and the lateral wings has lateral wing angles adjusting mechanisms. The anterior guide pin makes contact with and slides on an anterior guide mechanism formed by the surface of the anterior guide table. The condylar guide mechanisms in which the condyle is positioned have condylar path inclination angle adjusting mechanisms. The sagittal inclination angle, the lateral wing angles, and the condylar path inclination angles are to be adjusted by two steps to specified values of a first group and to specified values of a second group.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: January 13, 1998
    Assignees: Shioda Dental Manufacturing Co., Ltd., Sumiya Hobo
    Inventors: Sumiya Hobo, Hisao Takayama
  • Patent number: 5660544
    Abstract: The present disclosure relates to a method and an apparatus for recording and reproducing the path of insertion of a cast on surveyors. In the method, the accuracy and speed of recording the path of insertion is easily effected with the help of a scoring tool and an adjustable surveyor table on which a cast is secured and the spatial relationship of the cast with respect to the scoring tool can be easily adjusted, facilitating parallel line making on the cast in one aspect and the reorientation of the cast in another aspect.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: August 26, 1997
    Inventor: Jui-Yuan Shih
  • Patent number: 5595485
    Abstract: A jaw movement recording device, articulator and methods disclosed utilize a lower marking plate with front, rear, left and right side marking pins that cooperate with an upper marking plate and depressions and a bearing pin in such a way as to give an accurate recording of the movement of a patient's lower jaw in a wafer between the two plates. An articulator has a lower frame with upright side posts having upper pin-like portions and an upper frame with fossa holders and a pliable material that form fossa socket patterns. Tension springs extending between the frames at the front and rear enable a constant tension in forming the fossa socket patterns.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: January 21, 1997
    Assignee: John S. Shepard, D.D.S., P.C.
    Inventor: John S. Shepard
  • Patent number: 5431564
    Abstract: There is disclosed a calibration device for the inspection and precise setting of dental articulators which includes a stage member that is removably secured to the articulator lower frame and an scope gauge member that is removably secured to the upper frame of the articulator. A pair of position sensing indicators having sensing probes which are carried at the opposite sides of the stage member and are mechanically coupled by levers to contact points on the scope member which are located on the right and left axes of rotation of the articulator members. This permits the indicators to read, directly, relative vertical movements of the opposite sides of the articulator without being influenced by adjustments made at the opposite sides of the articulator. The inspection device includes ocular magnifiers including reticle and target indicium which cooperate to provide a vernier scale registering relative X-Y positions of the stage and gauge inspection members.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: July 11, 1995
    Inventor: Niles F. Guichet
  • Patent number: 5378148
    Abstract: Articulator for dental modelling, such as restoration of individual teeth and the manufacture of bridges or the like, comprising an upper part and a lower part mutually connected by a hinge, which makes it possible to simulate a movement approximately corresponding to a chewing movement, between the upper part and the lower part as well as a device for adjusting the upper part in relation to the lower part to establish a correct mutual engagement between the models mounted on the two parts and a subsequent fixation thereof. The articulator, of which the adjustment can take place shortly after the models have hardened and are ready for further working up, has an upper and lower part, each comprising a mould having walls with a toothing, one of the parts comprising a stanchion made of thermoplastics, the stanchion carrying one part of the hinge, with the hinge being separable. An apparatus having a nozzle is also provided, for supplying a jet of hot air through the stanchion, which is preferably tube shaped.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: January 3, 1995
    Inventor: Bent Mogensen
  • Patent number: 5320527
    Abstract: A maxillary dental arch form is disclosed which enables orientation with a maxillary cast without the use of an articulator, relator or other such instrument. The maxillary dental arch form is provided with incisal pappila and hamular notch engaging members which engage corresponding representations of the incisal pappila and left and right hamular notches within the maxillary cast of the patient's maxillary alveolar ridge. Denture tie-in using conventional wax-up techniques can be quickly accomplished in fabricating partial or full artificial dentures.
    Type: Grant
    Filed: February 3, 1992
    Date of Patent: June 14, 1994
    Inventor: Robert Schwartz
  • Patent number: 5257932
    Abstract: A jaw model articulator clearly identifies condyle joint strain as well as fully emulates a patient's straight bite and cross bite. The spatial relationship of the upper and lower jaws with respect to the condyle joints and to each other is accurately determined by just two wax bite impressions taken of the patient. No extraneous mechanical hardware needs to be attached to the patient's head. The two wax impressions are sequentially inserted between the upper and lower jaw models. The resulting change in the models relative positions are measured and the values inputted to a desk top personal computer. The computer calculates the precise location of the rotational axis defined by the condyle joints, and the articulator is set up accordingly.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: November 2, 1993
    Inventors: Marcus J. Leinfelder, Robert J. Harter
  • Patent number: 5205737
    Abstract: An articulator for use in constructing artificial teeth is provided with means (10) for use in measuring the condylar movements of the artificial temporomandibular joints in the articulator, the measuring means (10) comprising boss means (11) adapted to be secured coaxially at the end of the shaft member (24) forming the pivot for a movable base plate (22) with respect to a fixed baseplate (21), axial scale bearing means (12) adapted to extend over the adjacent support (26) and generally parallel to the axis of the shaft member (24), point means (13) extending generally parallel to the axial scale bearing means (12), and slide means (14) for the pointer means (13) to enable its point (16) to be brought into contact with a scale (51) affixed to a face area of the support (26).
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: April 27, 1993
    Assignee: The University of Sheffield
    Inventor: Graham E. White
  • Patent number: 5190455
    Abstract: A method and apparatus for performing a head-related model incorporating for transferring a jaw model between articulators of different types. The apparatus for the head-related incorporation of jaw models includes an articulator base plate, a ground plate connected to the articulator base plate and a cylinder having a cylindrical cavity connected vertically to an upper surface of the ground plate. A piston is inserted in the cylindrical cavity. A carrier plate is connected to the end of the piston opposite the articulator base plate. A split cast plate is positioned on the carrier plate and exactly repositionable via magnetic connection between the split cast plate and the carrier plate. A fixation element is connected to the carrier plate. An articulator mounting plate is supported by and connected to the split cast plate via a hardened viscous medium.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: March 2, 1993
    Inventor: Hans Schreiber
  • Patent number: 5176515
    Abstract: A characteristic of optimal facial harmony is a correlation of the A/P (Anterior/Posterior) position of the maxillary incisors with the forehead. When the forehead is canted about 7 degrees or less, the A/P position of the maxillary incisors should match that of the middle of the forehead. For every degree the forehead is canted more than 7 degrees, the A/P position of the maxillary incisors should be 0.6 millimeters more anterior than the middle of the forehead. The extent to which the A/P position of the maxillary incisors is forward or back of the forehead's midpoint can be judged in millimeters quite accurately by viewing a patient in profile with the patient's forehead and maxillary incisors fully bared. Once the linear decision is made then the A/P treatment goal position can be physically measured and recorded using a novel bite fork (58), an improved facebow (56), and a new piece of equipment called a verticalizer (60).
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: January 5, 1993
    Inventor: Lawrence F. Andrews
  • Patent number: 5154608
    Abstract: A method and apparatus for determination of the jaw relation and for instrumental occlusion analysis, which permit a reliable diagnosis and treatment for the occlusion. For this purpose, a maxillary model and mandibular model from a patient are fixed in plaster independently of one another and anatomically correctly and are placed one upon the other in an instantaneous occlusal position. For the instantaneous occlusal position, the positioning of the articular cavities of the maxillary model relative to the hinge axis of the mandibular model is determined, and the maxillary model is then displaced three-dimensionally relative to the mandibular model, with symmetrical alignment of the articular cavities relative to the hinge axis. The resulting jaw relation is fixed for an analysis of the malocclusions.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: October 13, 1992
    Inventor: Tibor Feher
  • Patent number: 5064368
    Abstract: The invention described facilitates accurate placement of orthodontic brackets on a patient's mal-occluded teeth. An indexed dental cast of the patient's mal-occlusion is produced by the present apparatus. In process steps for indexing the crown model, various adjustment devices hold a selected mal-occluded crown model of the cast in an "ideal" or corrected position in space. The cast is thus positioned and held while a drill is used to form index holes in the cast material. The index holes record the "ideal" position of the selected crown model even though the crown model remains in its original mal-occluded position in the cast. Positioning of a bracket against the selected crown model is accomplished by a bracket holder and adapter using the index. The holder receives the bracket while the adapter is positioned, using probes inserted into the index holes. The holder may be moved to a selected tip angle and bracket placement height through adjustments on the adapter.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: November 12, 1991
    Inventor: Joseph J. Lavin