WO2020037598A1 - Système et procédé interactifs d'ajustement de la mâchoire - Google Patents

Système et procédé interactifs d'ajustement de la mâchoire Download PDF

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Publication number
WO2020037598A1
WO2020037598A1 PCT/CN2018/101936 CN2018101936W WO2020037598A1 WO 2020037598 A1 WO2020037598 A1 WO 2020037598A1 CN 2018101936 W CN2018101936 W CN 2018101936W WO 2020037598 A1 WO2020037598 A1 WO 2020037598A1
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WIPO (PCT)
Prior art keywords
jaw
model
aligned
models
lower jaw
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Ceased
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PCT/CN2018/101936
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English (en)
Inventor
Yu Zhou
Yannick Glinec
Qinran Chen
Zhaohua Liu
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Carestream Dental Technology Shanghai Co Ltd
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Carestream Dental Technology Shanghai Co Ltd
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Priority to PCT/CN2018/101936 priority Critical patent/WO2020037598A1/fr
Publication of WO2020037598A1 publication Critical patent/WO2020037598A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/04—Measuring instruments specially adapted for dentistry
    • A61C19/05—Measuring instruments specially adapted for dentistry for determining occlusion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/004—Means or methods for taking digitized impressions
    • A61C9/0046—Data acquisition means or methods
    • A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam

Definitions

  • the present disclosure generally relates to the technical field of dental 3-dimensional (3D) imaging, and in particular to a methods and/or computerized systems for bite registration.
  • 3D camera system is used to create a 3D model of the teeth directly with the patient, which avoids the use of cast impressions. This reduces cost and simplifies the workflow of dental restorations.
  • Bite registration is the process of registering the upper jaw with the lower jaw, which could establish a 3D spatial positioning relationship between an upper jaw and its corresponding, lower jaw in the closed state.
  • the single bite surface is captured from one certain location (such as right side of molars) of the clenched teeth by a scanner, then the 3D teeth models of the upper jaw and the lower jaw captured independently are stitched onto the bite surface in a semi-automatic way so as to complete bite registration.
  • the global teeth contain a plurality of teeth (such as more than 5 teeth)
  • the bite registration obtained from only one location of the bite surface may lead to significant mismatch in another location.
  • An aspect of this application is to advance the dental imaging art or improve the accuracy of dental bite registration.
  • Another aspect of this application is to address, in whole or in part, at least the foregoing and other deficiencies in the related art.
  • a method of bite registration can include obtaining 3-dimensional (3D) teeth models of opposing portions of an upper jaw and a lower jaw, first aligning the 3D teeth models of the upper jaw and the lower jaw, displaying one of the first alignedjaw models where an occlusal surface of the selected first alignedjaw model is viewable, selecting at least one contact point on the occlusal surface of the selected first alignedjaw model, second aligning the 3D teeth models of the upper jaw and the lower jaw, where the second alignment is based on a distance from the at least one selected contact point to an occlusal surface of the opposing jaw model, and displaying, transmitting, or storing the second aligned 3D models for the upper jaw and the lower jaw.
  • a device includes one or more processors, a non-transitory memory, and one or more programs; the one or more programs are stored in the non-transitory memory and configured to be executed by the one or more processors and the one or more programs include instructions for performing or causing performance of any of the methods described herein.
  • a non-transitory computer readable storage medium has stored therein instructions, which, when executed by one or more processors of a device, cause the device to perform or cause performance of any of the methods described herein.
  • a device includes: one or more processors, a non-transitory memory, and means for performing or causing performance of any of the methods described herein.
  • FIG. 1 is a schematic structural view of an example system architecture to implement bite registration in accordance with some implementations.
  • FIG. 2 is a flowchart representation of an example method of bite registration in accordance with some implementations.
  • FIG. 3 is a diagram that shows an example 3D digital model of the upper jaw and an example 3D digital model of the lower jaw.
  • FIG. 4 is a diagram that shows an example operator interface screen for operator instructions to interactively perform a second alignment of 3D digital jaw models registration in accordance with some implementations.
  • FIG. 5 is a diagram that shows an example pressure occlusion map.
  • FIG. 6 is a diagram that shows an example re-aligned 3D digital model of the upper jaw and the 3D digital model of the lower jaw in accordance with some implementations.
  • FIG. 7 is a diagram that shows an example operator interface screen for operator instructions to interactively perform a second alignment of 3D digital jaw models registration in accordance with some implementations.
  • first does not necessarily denote any ordinal or priority relation, but may be used for more clearly distinguishing one element or time interval from another.
  • signal communication means that two or more devices and/or components are capable of communicating with each other via signals that travel over some type of signal path.
  • Signal communication may be wired or wireless.
  • the signals may be communication, power, data, or energy signals which may communicate information, power, and/or energy from a first device and/or component to a second device and/or component along a signal path between the first device and/or component and second device and/or component.
  • the signal paths may include physical, electrical, magnetic, electromagnetic, optical, wired, and/or wireless connections between the first device and/or component and second device and/or component.
  • the signal paths may also include additional devices and/or components between the first device and/or component and second device and/or component.
  • the terms “viewer” , “operator” , “dentist” , “user” and the like are considered to be equivalent and refer to the viewing practitioner, technician, or other person with access to dental systems, applications, workstations and processors who views and manipulates a dental practice software to perform exemplary dental procedures including bite registration and 2D/3D images acquired, manipulated, or used in bite registration.
  • a “viewer instruction” , "operator instruction” , or “operator command” can be obtained from explicit commands entered by the viewer or may be implicitly obtained or derived based on some other user action, such as making an equipment setting, for example.
  • the terms “command” and “instruction” may be used interchangeably to refer to an operator entry.
  • 3-D model , "point cloud” , “3-D surface” , and “mesh” may be used synonymously in the context of the present disclosure.
  • the dense point cloud is formed using techniques familiar to those skilled in the volume imaging arts for forming a point cloud and relates generally to methods that identify, from the point cloud, vertex points corresponding to surface features.
  • the dense point cloud is thus generated using the reconstructed contour data from one or more reflectance images.
  • Dense point cloud information serves as the basis for a polygon model at high density for the teeth and gum surface.
  • FIG. 1 shows an example system architecture for bite registration in accordance with some implementations.
  • the system 10 can be used for dental practitioner procedures including at least bite registration.
  • the system 10 includes a scanner 13 and a computerized workstation 91.
  • the scanner 13 is handheld by the user, and the scanner 13 can be partly put into the mouth of patient 90. When put into the mouth, the scanner 13 can capture image (s) of the teeth or other 2D/3D views as necessary.
  • the scanner 13 and the workstation 91 can be connected in a wireless or wired way so that the images, or views captured by the scanner 13 can be transmitted to the workstation for data processing or real-time displaying.
  • some instructions generated by the workstation 91 can also be transmitted to the scanner 13 so as to control the scanner 13 operations.
  • the workstation 91 includes at least a monitor 19 that can display all types of 2D/3D dental practice images, user interfaces or windows, e.g., under the control of the workstation 91.
  • Dental practice software or applications including bite registration can be installed in the workstation 91. When running some of such applications, the workstation 91 can function as an image processing device that can construct a global 3D teeth model.
  • the workstation 91 can perform exemplary bite registration methods and/or system implementations according to this disclosure independently or coordinated with processes of constructing the global 3D teeth model.
  • the dental practice applications performed at the workstation 91 are not be limited to only these. Further, the system 10 can function alone or within a local or remote network forming a dental practice.
  • FIG. 2 is a flowchart representation of an example method of operating an electronic device in accordance with some implementations.
  • example method 200 is performed by processing logic, including hardware, firmware, software, or a combination thereof.
  • example method 200 is performed by a processor executing code stored in a non-transitory computer-readable medium (e.g., a memory) .
  • example method 200 is performed on a portable electronic device (e.g., laptop, tablet, smartphone) .
  • the method 200 obtains 3D digital models of an upper jaw and a lower jaw of a patient.
  • the user can generate 3D digital models of the upper jaw and the lower jaw.
  • One example method to generate the 3D digital models of the upper jaw and the lower jaw is an intraoral scan.
  • the user can access stored 3D digital models of the upper jaw and the lower jaw.
  • One example intraoral 3D model generation scan procedure includes the user operating the scanner 13 in the mouth of the patient 90, to capture multiple 2D images of the upper jaw and lower jaw, respectively, from each of a plurality of different viewpoints.
  • Each set of multiple 2D images from a viewpoint can be processed to generate a single 3D view (e.g., contour image) of a portion of a jaw.
  • Multiple 3D views from different viewpoints can be combined or stitched together to generate 3D digital teeth models of the upper and lower jaws.
  • Such processing can be performed at the workstation 91, the scanner 13, remotely or in combination.
  • Alternative conventional methods or system e.g., triangulation, confocal imaging, etc.
  • FIG. 3 is a diagram that shows an example 3D digital model of the upper jaw 310 and an example 3D digital model of the lower jaw 320.
  • the 3D digital model of the upper jaw 310 and the 3D digital model of the lower jaw 320 can be, for example, represented by 3-D polygon mesh models in the simple form of a triangular mesh.
  • a triangular mesh forms a basic mesh structure that can be generated from a point cloud and used as a digital model to represent a 3-D object by its approximate surface shape, in the form of triangular plane segments sharing adjacent boundaries.
  • Methods/apparatus for forming a polygon mesh model, such as a triangular mesh or more complex mesh structure are well known to those skilled in the contour imaging arts.
  • the polygon unit of the mesh model, and relationships between neighboring polygons can be used in this application to extract features (e.g., curvatures, minimum curvatures, edges, spatial relations, etc. ) at the teeth boundaries.
  • the method 200 performs a first bite registration or alignment of the upper jaw 3D model and the lower jaw 3D model. Since the 3D digital models of each jaw or dental arch are scanned independently, the digital models need to be related in space to represent the patient occlusion.
  • the first bite registration can be a manual registration or an automatic registration.
  • a bite surface containing a portion of the upper jaw and a corresponding portion of the lower jaw simultaneously is acquired.
  • the scanner 13 is set in a location so as to capture one or more bite surfaces (e.g., 3D view or surfaces) corresponding to a portion of one or more teeth from both the upper jaw and the lower jaw.
  • the bite surface (s) can capture a corresponding portion of the upper jaw and the lower jaw.
  • the bite surfaces captured by the scanner 13 can be obtained in a clenched state where the upper jaw is static in relation to the lower jaw.
  • the bite surfaces captured by the scanner 13 can be obtained in a clenched state where the upper jaw is static and completely closed in relation to the lower jaw.
  • the bite surface is a 3D surface containing upper and lowers jaws, and in some implementations, several bite views corresponding to different teeth respectively can be used.
  • the bite surface (s) can be displayed on the monitor 19 to the user.
  • the bite surface is a 3D surface, and usually representing a 3D shape characteristic of an outside or buccal surface of dentition.
  • the one or more bite surfaces can be used to automatically align the 3D teeth models of the upper jaw to the 3D teeth models of the lower jaw.
  • this first alignment method is similar with that of the stitching procedure at block 210.
  • the teeth are rigid 3D objects, (i) the 3D model of the upper jaw can be aligned with the 3D bite surface, and (ii) the 3D model of the lower jaw can be aligned with the 3D bite surface, which aligns the 3D model of the upper jaw to the 3D model of the lower jaw.
  • at least two bite surfaces from different perspective, locations around the dental arch or different teeth are used at block 220 to improve the first alignment.
  • Alternative conventional methods or system can be used to generate the first bite registration of the 3D digital teeth models of the upper and lower jaw at block 220.
  • physical models made from the 3D digital teeth models of the upper and lower jaw can be arranged in occlusion and scanned (e.g., digital dental x-ray imaging apparatus) to obtain relative positional information to register the upper model to the lower one.
  • a wax bite can be scanned and a 3D digital occlusal model generated. Then, the upper jaw model is registered to the upper side of the 3D digital occlusal model (e.g., the wax bite) and the lower jaw model is registered to the lower side of the 3D digital occlusal model.
  • one manual process can visually assess the upper and lower jaw models'occlusion at the workstation 91 and match their relative position in the virtual space by the user.
  • the method 200 performs a second bite registration or alignment of the first aligned upper jaw 3D model and the lower jaw 3D model.
  • the user selects one of a 3D upper jaw model 310 or a 3D lower jaw model 320.
  • the user indicates at least one contact point.
  • the user selects 3, 5, 7 or more contact points.
  • the user selects or picks the contact points or contact areas by selecting the one or more contact points on user interface displaying an occlusal surface of the selected 3D jaw model.
  • the selected 3D model 310 or the 3D model 320 is presented in a display window in the user interface on display 19 in a preset orientation with the occlusal surface accessible (e.g., perspective or top view) .
  • the selected 3D model 310 or the 3D model 320 is presented in a display window in the user interface on display 19 with user controls to manipulate the orientation to allow access to the occlusal surface.
  • the contact points are selected through a user interface on the monitor 19. In one implementation, the contact points are selected while an example occlusion map is concurrently displayed on the monitor 19. In one implementation, the example occlusion map is a pressure occlusion map. In some implementations, the contact points are provided based on the practitioner’s experiences.
  • FIG. 5 is a diagram that shows an example pressure occlusion map. As shown in FIG. 5, a variable pressure map 530 is illustrated in grayscale mapped to a 3D digital model of an upper jaw 510 and a 3D digital model of a lower jaw 520.
  • the method 200 performs re-alignment by adjusting the 3D model of the upper jaw aligned to the 3D model of the lower jaw to provide bites with only slight intersections at the selected contact points.
  • the method reduces or optimizes a distance from the contact points to the opposite jaw.
  • the method determines a transform (e.g., rotation and translation for the upper or lower jaw models) using an initial value of the first aligned bite position either from automatic or from manual bite registration (e.g., block 220) .
  • the method can re-adjust and accomplish the interactive post bite adjustment by determining a transform that can reduce or minimize the distance of the selected points to the opposite jaw using equation (1) below:
  • M is the target transform and x i are the selected points or points in the selected area.
  • the function D is a metric to describe how far the selected point is from the opposite arch. In various implementations, the function D does not need to be the Euclidean distance metric but can be various kinds of distance metrics.
  • the function D can be a signed distance function D (e.g., that depends on the local normal direction) to define a weak attracting force to assemble the jaws together and a very strong repelling force to avoid intersection.
  • D signed distance function
  • an amount of intersection can be controlled (e.g., decrease) by using equation (3) below:
  • I is a positive function that describes the intersection amount at uniform sampled nodes y i
  • N s is the number of the uniform sampled nodes on the arch.
  • the method 200 displays the second alignment (e.g., re-alignment based on contact points) of the upper jaw 3D model and the lower jaw 3D model.
  • the re-aligned or second aligned 3D models of the upper jaw and the lower jaw are shown in an occlusal relationship from a perspective viewpoint.
  • the method 200 determines whether additional user modifications to the second aligned 3D models of the upper jaw and the lower jaw are desired or needed. When the determination in block 260 is negative, control passes to block 270 where the method 200 displays, transmits, or stores the second alignment of the upper jaw 3D model and the lower jaw 3D model. When the determination in block 260 is negative, control returns to block 230.
  • FIG. 4 shows an example operator interface screen 460 for portions of a sequence for review and entry of contact points for a selected upper or lower jaw model.
  • operator instructions can interactively perform a second registration or alignment of the first aligned upper jaw 3D model and the lower jaw 3D model (e.g., block 230, block 240) .
  • An upper jaw or lower jaw is selected by controls 410, and the selectedjaw (e.g., lower) is displayed so that the occlusal surface is viewable.
  • an example occlusal perspective view is shown in a display area 420 of screen 460.
  • Other view of 3D digital teeth models can be used (e.g., top view, an open mouth) so long as the selectedjaw occlusal surface is viewable.
  • a series of preset selectable occlusal orientations can be sequential viewed. Contact points are then added by the user to the selected displayed 3D jaw model. Operator controls 430 provide entry actions for contact points 430a. As shown in FIG. 4, using operator controls 430, the user can select up to five contact points and place them at designated positions on the selected occlusal surface. Additional contact points can be requested. Further, all contact points 430a can be cleared with a single “clear” operator action.
  • An occlusal pressure map 530 or the like can be displayed in correspondence as an aid to the user. In some implementations, a collision or contact value of the occlusal pressure map 530 or the like can be mapped to the selected jaw model.
  • an optional depth of intersection at the contact points 430a can be preset or individually set. As shown in FIG. 4, operator controls 440 provide entry actions for a depth of the intersection at the contact points 430.
  • the depth of the intersection can be variable, e.g., 50, 100, 150 or 200 microns, by contact point. In some implementations, the depth of the intersection can vary by dental lab, dental clinic or practitioner. Alternatively, the depth of the intersection can vary by tooth type or distance from the first alignment bite surface.
  • Operator controls 450 provide operator entry actions to view the first alignedjaw models or the second aligned jaw models.
  • FIG. 6 is a diagram that shows an example perspective view of the re-aligned 3D digital model of the upper jaw and the 3D digital model of the lower jaw. As shown in FIG. 6, the underlying 3D digital model of the upper jaw 310 and 3D digital model of the lower jaw 320 can optionally be shown with second re-aligned jaw models 610.
  • Operator controls 470 provide operator entry actions to store the second aligned 3D jaw models.
  • the user can compare results against the first alignment and easily adjust parameters to view results of successive second alignment attempts.
  • FIG. 7 shows an example operator interface screen 760 for portions of a sequence for review and entry of contact points for a selected upper or lower jaw model registration in accordance with some implementations.
  • operator instructions can interactively perform a second registration or re-alignment of the first aligned upper jaw 3D model and the lower jaw 3D model (e.g., block 230, block 240) .
  • Operator control 705 can be used to enter or exit the bite adjustment interface 760.
  • a 3D digital model of the upper jaw 710 and 3D digital model of the lower jaw 720 are shown in a left display 720A, and operator control 730 allows operator actions to enter contact points 730a on the visible occlusal surface of both jaws.
  • Operator control 740 can be used to undo a last picked contact point, and operator control 750 can be clear all contact points.
  • Operator control 770 can be used to apply the selected contact points, and the resulting second aligned bite adjustment result 780 is illustrated on a right display 720B (right half) on the screen 760.
  • the selected contact points 730a can be shown in both the left display 720A and the right display 720B.
  • the present disclosure can use a computer program with stored instructions that control system functions for image acquisition and image data processing for image data that is stored and accessed from an electronic memory.
  • a computer program of an implementation of the present invention can be utilized by a suitable, general-purpose computer system, such as a personal computer or workstation that acts as an image processor, when provided with a suitable software program so that the processor operates to acquire, process, transmit, store, and display data as described herein.
  • a suitable, general-purpose computer system such as a personal computer or workstation that acts as an image processor
  • a suitable software program so that the processor operates to acquire, process, transmit, store, and display data as described herein.
  • Many other types of computer systems architectures can be used to execute the computer program of the present invention, including an arrangement of networked processors, for example.
  • the computer program for performing the method of the present invention may be stored in a computer readable storage medium.
  • This medium may comprise, for example; magnetic storage media such as a magnetic disk such as a hard drive or removable device or magnetic tape; optical storage media such as an optical disc, optical tape, or machine readable optical encoding; solid state electronic storage devices such as random access memory (RAM) , or read only memory (ROM) ; or any other physical device or medium employed to store a computer program.
  • the computer program for performing the method of the present invention may also be stored on computer readable storage medium that is connected to the image processor by way of the internet or other network or communication medium. Those skilled in the image data processing arts will further readily recognize that the equivalent of such a computer program product may also be constructed in hardware.
  • memory can refer to any type of temporary or more enduring data storage workspace used for storing and operating upon image data and accessible to a computer system, including a database.
  • the memory could be non-volatile, using, for example, a long-term storage medium such as magnetic or optical storage. Alternately, the memory could be of a more volatile nature, using an electronic circuit, such as random-access memory (RAM) that is used as a temporary buffer or workspace by a microprocessor or other control logic processor device.
  • Display data for example, is typically stored in a temporary storage buffer that is directly associated with a display device and is periodically refreshed as needed in order to provide displayed data.
  • This temporary storage buffer can also be considered to be a memory, as the term is used in the present disclosure.
  • Memory is also used as the data workspace for executing and storing intermediate and final results of calculations and other processing.
  • Computer-accessible memory can be volatile, non-volatile, or a hybrid combination of volatile and non-volatile types.
  • the computer program product of the present disclosure may make use of various image manipulation algorithms and processes that are well known. It will be further understood that the computer program product implementation of the present invention may embody algorithms and processes not specifically shown or described herein that are useful for implementation. Such algorithms and processes may include conventional utilities that are within the ordinary skill of the image processing arts. Additional aspects of such algorithms and systems, and hardware and/or software for producing and otherwise processing the images or co-operating with the computer program product of the present invention, are not specifically shown or described herein and may be selected from such algorithms, systems, hardware, components and elements known in the art.
  • the terms “a” or “an” are used, as is common in patent documents, to include one or more than one, independent of any other instances or usages of “at least one” or “one or more. ”
  • the term “or” is used to refer to a nonexclusive or, such that “A or B” includes “A but not B, ” “B but not A, ” and “A and B, ” unless otherwise indicated.
  • the terms “including” and “in which” are used as the plain-English equivalents of the respective terms “comprising” and “wherein.
  • Exemplary implementations according to the application can include various features described herein (individually or in combination) .

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Abstract

L'invention porte sur un procédé et un appareil d'ajustement de la mâchoire. Après un premier alignement des parties opposées d'un modèle 3D de mâchoire supérieure et d'un modèle 3D de mâchoire inférieure, il est possible d'afficher l'un des premiers modèles de mâchoire alignés dont la surface occlusale est visible. Une pluralité de points de contact sont sélectionnés sur la surface occlusale visible. Ensuite, les modèles dentaires 3D de la mâchoire supérieure et de la mâchoire inférieure sont alignés de nouveau, ce nouvel alignement étant établi en fonction de la distance entre les points de contact et la surface occlusale du modèle de mâchoire opposée.
PCT/CN2018/101936 2018-08-23 2018-08-23 Système et procédé interactifs d'ajustement de la mâchoire Ceased WO2020037598A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11191619B1 (en) 2021-05-13 2021-12-07 Oxilio Ltd Methods and systems for determining occlusal contacts between teeth of a subject
US11364103B1 (en) 2021-05-13 2022-06-21 Oxilio Ltd Systems and methods for determining a bite position between teeth of a subject
CN115089325A (zh) * 2022-06-28 2022-09-23 杭州雅智医疗技术有限公司 一种利用数字颌架达到下颌姿势位的方法、装置及应用

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Publication number Priority date Publication date Assignee Title
US20020094509A1 (en) * 2000-11-30 2002-07-18 Duane Durbin Method and system for digital occlusal determination
WO2006085851A1 (fr) * 2005-02-07 2006-08-17 Ios Technologies, Inc. Procedes et systemes de determination occlusale de modeles dentaires au moyen d'une empreinte d'enregistrement de morsure repliquee
US20160008116A1 (en) * 2013-03-11 2016-01-14 Carestream Health, Inc. Method and system for bite registration

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020094509A1 (en) * 2000-11-30 2002-07-18 Duane Durbin Method and system for digital occlusal determination
WO2006085851A1 (fr) * 2005-02-07 2006-08-17 Ios Technologies, Inc. Procedes et systemes de determination occlusale de modeles dentaires au moyen d'une empreinte d'enregistrement de morsure repliquee
US20160008116A1 (en) * 2013-03-11 2016-01-14 Carestream Health, Inc. Method and system for bite registration

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11191619B1 (en) 2021-05-13 2021-12-07 Oxilio Ltd Methods and systems for determining occlusal contacts between teeth of a subject
US11364103B1 (en) 2021-05-13 2022-06-21 Oxilio Ltd Systems and methods for determining a bite position between teeth of a subject
US11779445B2 (en) 2021-05-13 2023-10-10 Oxilio Ltd Systems and methods for determining a bite position between teeth of a subject
US12285310B2 (en) 2021-05-13 2025-04-29 Oxilio Ltd Methods and systems for determining occlusal contacts between teeth of a subject
CN115089325A (zh) * 2022-06-28 2022-09-23 杭州雅智医疗技术有限公司 一种利用数字颌架达到下颌姿势位的方法、装置及应用

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