WO2012090211A1 - Système d'arc facial avec modèle informatique à réalité augmentée utilisable en dentisterie - Google Patents

Système d'arc facial avec modèle informatique à réalité augmentée utilisable en dentisterie Download PDF

Info

Publication number
WO2012090211A1
WO2012090211A1 PCT/IN2010/000865 IN2010000865W WO2012090211A1 WO 2012090211 A1 WO2012090211 A1 WO 2012090211A1 IN 2010000865 W IN2010000865 W IN 2010000865W WO 2012090211 A1 WO2012090211 A1 WO 2012090211A1
Authority
WO
WIPO (PCT)
Prior art keywords
patient
jaw
dental
smile
cameras
Prior art date
Application number
PCT/IN2010/000865
Other languages
English (en)
Inventor
Jeevan Kumar SANTIAGO
Original Assignee
Santiago Jeevan Kumar
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Santiago Jeevan Kumar filed Critical Santiago Jeevan Kumar
Priority to PCT/IN2010/000865 priority Critical patent/WO2012090211A1/fr
Publication of WO2012090211A1 publication Critical patent/WO2012090211A1/fr

Links

Classifications

    • 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
    • A61C19/045—Measuring instruments specially adapted for dentistry for recording mandibular movement, e.g. face bows

Definitions

  • the dental articulator serves to hold the dental models or casts in a precise relationship like how the upper and lower arches of teeth relate to each other in the patient's mouth. They must also be held in a precise relation to the hinge axis of the articulator in such a way that the opening and closing of the patient's jaw can be precisely reproduced in the casts or models mounted on the articulator. Failure to record and reproduce upper and lower arch relationships in the articulator may reflect in a defective or incorrect restoration or prosthesis. While being fitted in the mouth, the clinician would have to spend valuable chair time correcting the discrepancies or redo the dentures or crowns. While manufacturing a restoration or prostheses that would be visible while the patient smiles, the dental laboratory technician must be able to correlate the work done over the bench with the actual smile of the patient.
  • U.S. Pat No US 2007/0009855A1 U.S. Pat No US 2007/0196782, U.S.Pat : 2009/0291 08A1 discuss methods for enhanced visualization and communication of the aesthetic form of the patient's teeth for chair side diagnostic evaluation and communication.
  • the Augmented Reality dental model is based upon AR (Augmented Reality) implementation using a computer, camera bearing devices described as face bows and software.
  • the basic function of the software is to superimpose recorded video over live video footage of the patient within a frame of reference on the computer screen.
  • the first embodiment comprises of a jaw clutch that engage the jaw of the patient bearing an adjustable frame.
  • Cameras and pointer are mounted on a frame that focuses on the front and sides of the patient's face as the patient makes jaw movements.
  • Transparent graphs and fiduciary markers are placed over the live video footages on screen obtained from the cameras for jaw motion analysis and hinge axis determination.
  • the cameras freely move along with the jaw attached to the bite fork maintaining a specific distance from the patient without any mechanical contact or restrictions.
  • the transparent graphs and fiduciary markers enable the clinician to analyze and quantify jaw movement in a particular plane and determine the axis of rotation of the jaw.
  • the recorded patient video obtained from the cameras mounted on the frames is used to orient dental models in an articulator in relation with the hinge axis using live video transparency features.
  • a right angled frame or rod is used with a camera that focuses on the patient's face to capture smile data from a stable point of reference or location.
  • the video and image data captured by the camera is stored in a computer and used as virtual information that is superimposed on the patient's real time video footage for aiding chair side smile design procedures or superimposed over the patient's dental models or casts mounted in the articulator for improving the level of communication with a dental laboratory.
  • the camera has a perforated plate on top which is used for performing a bite registration. The bite registration is performed using a bite fork which has a perforated plate on one end and a bite plate on the other.
  • a quick setting, rigid bite registration material is introduced between the perforated plates of the camera and bite fork to attach or seal them together in the position at which the camera acquired smile data.
  • the bite fork along with the camera is sent to the dental laboratory technician for mounting the camera before the dental articulator at the same position at which the camera captured smile data of the patient.
  • the smile data of the patient is superimposed or alpha blended over the live cast footage for enhancing correlation between the work done on the dental technician's bench and the patient who is not present.
  • Fig 1 shows the face bow system assembly and parts and how it relates to the computer and the patient for determining the jaw hinge axis and studying mandibular movements.
  • Fig 2 shows the face bow system assembly and parts and how it relates to the computer, the patient and articulator for determining the jaw hinge axis and studying mandibular movements.
  • Fig 3 shows the face bow assembly and parts and how it relates to the computer, patient and the articulator for recording aesthetic parameters of the patient and transferring the information to the articulator.
  • Fig 4 shows the face bow assembly and system and how it relates to the patient for aesthetic correlation- during chair side procedures.
  • Fig 5 shows how a camera can be attached to an existing commercially available pantograph for studying and recording mandibular or jaw movement using software.
  • impressions of the patient's dental structure in order to diagnose the patient's needs.
  • these impressions are made by the use of a tray filled with impression material which the dentist places of the patient's teeth.
  • the dentist then subsequently makes a model or cast of the dental patient's teeth from the impression mold and sends it to the dental laboratory technician.
  • a dentist may also use a CAD CAM route to acquire three dimensional data of patient's teeth.
  • the dental laboratory technician would manufacture these higlily esthetic and biocompatible restorations or prostheses for the patient. There are . a few cases or instances where the clinician may prefer to complete the treatment chair side right in the patient's mouth. Placement of composite or CAD CAM veneers to improve the overall smile or appearance of the patient is one such exemplary procedure of treatment done chair side.
  • the clinician has to prepare or shape teeth through a high speed dental drill, take a measurement of the prepared tooth or teeth and send it to the dental laboratory for the required work to be done outside the patient's mouth.
  • the dental laboratory technician receives the dental models and other important records from the clinician and starts fabricating the required denture or restoration for the patient.
  • a dentist in order to clinically diagnose a patient's dental needs and proceed with the right treatment, a dentist must be able to ascertain the location of the patient's teeth in relation to his jaw and jaw hinge axis. ' The clinician must also be able to deliver the patient an improved appearance or smile that would satisfy and fulfill the patient's expectations or desires.
  • the VDO Very dimension of occlusion
  • the clinician or dental laboratory technician working on the case would need information regarding the precise jaw opening and closing path also known as the arc of closure and along with information on other mandibular or jaw movements that occur sideways or laterally.
  • any ordinary articulator would also be able to make the simple hinge movement reliably and most accurately.
  • the jaw translates forward into the place where maximum contact of teeth is observed is also known as the MI (Maximum Interception) position.
  • the MI position has not been chosen as the ideal position to take a bite index or a record. Instead, the CR position which is the most retruded position of the jaw when the patient bites repeatedly using the back teeth has been used to record the bite.
  • the condoles or jaw joints are at the limiting walls of the joint fossae and the teeth occlude at a single reproducible position that the clinician tries to record with a centric check bite record without any sideward deviation or translation of the jaw.
  • the dentist then ascertains the location of the patient's teeth by measuring and recording the relative distances between the bite-fork and the patient's jaw hinge axis, as defined by the hinge pointers in the face bow.
  • the face bow record obtained is used to mount dental models or casts in the dental articulator at exactly the same anatomic relationships found to exist between the teeth and the jaw joint axis in the patient.
  • the aesthetic restoration or prosthesis is then planned and fabricated to fit the patient's individual smile.
  • the Augmented Reality dental model is based upon AR (Augmented Reality) a new technology involved with the viewing of real time events along with superimposed graphic data. This has been envisioned in order for the user of the system to benefit by having virtual information exactly wherever and whenever necessary.
  • An example for AR implementation in Dentistry is where live video footage and recorded video virtual information or data of the patient are superimposed one on top of the other.
  • AR application development in general involves higher costs, a novel AR application system and model can be easily implemented for use in dentistry by using simple and commonly available techniques such as real time alpha blending that is common to all modern computers and operating systems.
  • the AR dental computer model system about to be disclosed would also implement object tracking features that are synonymous with Computer Vision applications.
  • Open Computer Vision is a well known library of code that has been designed and maintained by Intel Corporation for research and future, application development related to computer vision and object recognition.
  • a specific tracking algorithm known as the Lucas Kanade algorithm would be implemented for tracking jaw movements of the patient in the AR implementation.
  • the cameras used to capture the videos or images of the patient are preferably of high resolution mounted on frames that are used to capture the functional and aesthetic parameters of the patient. . While one frame comprises of a mandibular clutch that engages the jaw of the patient, there is another one employed to capture the patient's aesthetic parameters by resting securely on a frame suspended from the patient' s head and nasal bridge or nasion . Cameras are fixed on the frames to focus on the patient as the patient makes jaw movements or smiles.
  • the cameras are interfaced to a computer through wired or wireless means.
  • Transparent graphs and markers are placed over the videos obtained for jaw motion analysis and hinge axis determination. Since the cameras freely move along with the jaw without any mechanical contact or restrictions like impingement of ear inserts, they are able to capture mandibular movement more precisely and with the least amount of discomfort to the patient.
  • the recorded video information is then used to orient dental models in an articulator using video transparency.
  • the transparent graphs and markers enable the clinician to analyze and quantify jaw movement in a particular plane and determine the rotation axis of the jaw.
  • the face bow system employed for studying jaw movements, locating and transferring the hinge axis of the jaw is seen fig 1.
  • the face bow in fig 1 is exemplarily used for studying or quantifying mandibular or jaw movements in various facial planes.
  • a computer 1 that has a USB connection or blue tooth connectivity feature 12 & 13 is used to receive inputs from cameras 3, 7 & 8. These cameras are located in an assembly frame which is attached to a bite fork clutch 6 through screw mechanisms 5 and 10.
  • Camera 7 that is located at side arm of the frame is located at a distance represented by 11 in fig 1 and focuses on a pointer or camera 8 in the other arm.
  • the cameras can be attached or detached to the bite fork clutch 6 or can be attached to the conventional face ' bows through mechanism 4.
  • the purpose of fixing cameras to existing kinematic face bows as in fig 5 is to' eliminate the need for using micro adjustable side arms and other mechanical devices for recording jaw movement .
  • the kinematic face bow locates the true hinge axis point of the jaw using a micro adjustable side ann, a stylus and a marking stage or platform where a small sheet of graph paper is stuck.
  • the micro adjustable side arms are connected to a bite fork clutch that is inserted into the mouth of the patient.
  • the stage or the platform where the stylus must mark is fixed to the patient's head.
  • the patient is asked to make various jaw movements and the movement of the stylus over the marking platform is observed closely.
  • the stylus is repeatedly adjusted so that while the patient bites in centric relation the stylus would no longer arc.
  • the point where the stylus no longer arcs is determined to be the hinge axis point of the patient.
  • the arbitrary face bow apart from using an approximation as guide for determining the hinge axis would use a mechanical clamp to record and transfer the arbitrary hinge axis position.
  • hi fig 5 45 is the specially designed lightweight camera that is attached to a red 46 that is bent at right angles and attaches to a clamp mechanism 47.
  • the clamp 47 in fig 5 allows the camera to be adjusted in two different directions to make it focus on the most probably hinge axis area.
  • the mechanism that attaches and detaches the cameras seen in figs 1 & 2 are for reducing transportation costs.
  • the computer 1 in figs 1 &2 runs software that is able to make live videos and images transparent on screen. Commercially available software that can do this is called Actual Title Buttons by Actual Tools.
  • Custom software can also be used to superimpose or alpha blend graphical elements like videos and images.
  • the frame boundaries of the graphic elements such as videos and images act as two dimensional orienting aides on the screen.
  • the computer screens in fig 1 show how the video input of the camera is displayed. Lines that are drawn from the four corners of the video window intersect at point 2 which represents the center of the boundary box.
  • This line can be drawn on a transparent overlay using common programs such as MS Paint after making the paint program transparent of custom software can be used.
  • the central point of the video window is used as a real time orienting aide along with the boundary box of the video window to make sure that that the optical axis of the camera 7 coincides with a reference hinge axis line 9 that connects the cameras or pointers.
  • a transparent graph 14 shown in fig 2 is uperimposed over the live video feed of camera 7 in figs 1 &2, the bite fork clutch 6 in fig 1 is inserted in the patient's mouth and the patient is asked to make jaw movements.
  • Camera 3 in fig 1 which captures jaw movement in the frontal plane is also activated.
  • the patient is asked to open and close his or her mouth and the cameras 3& 7 record the movement of the jaw and present them as live video footages in the computer screen 15 shown in fig 2. Since camera 7 is attached to the jaw clutch ' through the frame and is away from the side of the patient's face indicated by distance 11, the camera would display the live footage of patient's ear and the most probable hinge axis point location in front of the ear. Jaw and camera movement in the video is observed as pure rotation or translation depending on the way the patient bites. The pure rotation of the jaw on its hinge axis is easily observed while the patient bites using the back teeth. A rotation and translation of the jaw is observed when the patient opens and closes his or her mouth.
  • the transparent graph 14 in fig 2 placed over the live video footage would be able to indicate the type and degree of movement of any fiduciary point marked on the live video or placed on the patient.
  • a non arcing fiduciary point 16 (fig2) observed in the live video indicates the jaw hinge axis.
  • the degree of movement in the frontal plane is recorded using camera 3.
  • Fiduciary points are either placed on the video or on the patient's skin. The sagittal and frontal plane movements are then studied.
  • the fiduciary points are placed over the video using an optic-flow algorithm that can track the movement of pixels using the open Computer Vision library developed by Intel Corporation.
  • the video footage that was used to determine the hinge axis is stored in the computer.
  • the face bow frame is adjusted by loosening the screw mechanisms 5 &10 in both fig 1 & 2 and the face bow adjusted in such a way that the hinge axis point 16 determined in the patient would merge with the center of the window 2 in fig 2.
  • the screws 5 & 10 are tightened again to lock the face bow in place before removing the face bow from the patient's mouth.
  • the face bow is then positioned along with the dental models or casts in the articulator as shown in fig 2.
  • the marker 8 in fig 2 is used for placing one arm of the face bow over the articulator hinge and adjust, or align the casts in such a way that the articulator hinge axis 17 aligns with the center of the video window.
  • the camera 7 is turned on and the live video feed displayed on screen of the articulator hinge axis 17 is used to align the dental models by making sure that physical marker 8, the center of the video window 2 in fig 2, the patient's recorded hinge axis 16 in fig2 and the articulator hinge axis 17 in fig 2 are all visualized in a straight line in the computer screen.
  • the accuracy of three dimensional alignment of the hinge axis can be checked by looking at the transparent three dimensional overlap of the points displayed real time on the computer screen.
  • Dental wax or suitable substance may be used for this purpose for holding the models and face bow in the articulator while the hinge axis of the patient is transferred to the articulator 17a in fig 2 through conventional mounting procedures using stone plaster.
  • the patient's hinge axis and the articulator hinge axis is represented by line 9.
  • the mounting dental models in an articulator in proper relationship to the hinge axis line 9 are a very significant and important ste in the prosthetic rehabilitation of the patient.
  • the groups of patients who require a change or increase in the vertical dimension of occlusion for the satisfactory treatment of their condition require the true hinge axis to be recorded and transferred to the articulator.
  • the clinician must also be able to communicate effectively with the patient and the dental laboratory technician who would tailor makes the required restoration or prostheses for the patient. Effective and accurate communication between the various parties involved regarding the preferred shape, size and position of teeth in relation with the actual smile line of the patient is the only sure way to a happy, satisfied and content customer for both the clinician as well as the dental laboratory technician.
  • Prestige Dental Corporation sells a device known as the Behrend Hanau Clinometer.
  • the Behrend Hanau Clinometer is a device that is used to mark lip lines, smile line and patient's face and dental midline in a plastic plate and transfer the plate to articulator so that the dental laboratory technician would be able to see where the teeth have to be placed in accordance with the various smile parameters marked.
  • the smile information is so vital that in the total absence of it, the dental laboratory technician is literally blind folded while working on a particular case.
  • a dental imaging system which has a camera for acquiring smile images can also be used to show the patient a pre and post operative perspectives of the result.
  • the patient Okays the result shown in the screen and the dental laboratory is given a prescription of the design characteristics to be incorporated into the restorations or new set of teeth.
  • the wax-up of teeth is done by the clinician or a dental laboratory technician and tried in the patient .
  • the patient tells the clinician whether the changes she or he observes in the overall smile are satisfactory or quite pleasing. In this way the trial wax-up is carried out till the patient and the clinician arrive at a common consensus about the exact final shape of the restorations, dentures or crowns the dental laboratory would manufacture.
  • the computerized dental imaging system which even the dental staff can be trained to handle consists of a computer and a software program that is able to digitally manipulate pixels using a software clone tool or transfer pixels in the screen from one point of the visible image of teeth to the other. Any program like Adobe Photoshop or UleadPhotoImpact can easily accomplish this within.
  • a smile can be imported from a smile gallery and placed on the existing smile of the patient for the patient to give her input or feedback.
  • Dental cosmetic imaging is a viable alternative provided the results are not unrealistic.
  • the digital pixel cloning in a single smile image of the patient is a viable alternative and so is the creation of composite images or videos of the smile, cast and /or retracted patient's teeth. This creates unique modes for enhanced visualization of both the smile of the patient as well as the work done on the cast for the particular patient.
  • Digital compositing or alpha blending which was originally invented by Microsoft researcher Dr. Alvy Ray Smith involves using an additional channel known as the alpha channel along with the color information (RGB) of an image.
  • the alpha channel was introduced as an additional channel that would carry opacity/ transparency information of any given pixel of the image.
  • the reason behind introducing the alpha channel was primarily to composite, merge or combine images and pack more conveyable information into a collage of images that can be placed on a website .
  • Pixar Graphics was renowned in creating spectacular special effects in their movies using alpha blending effects.
  • the workspace or desktop of a computer was then not just limited to a flat single display but had infinite and unlimited workspace hidden behind the visible desktop of the computer giving the user the sense of total immersion.
  • the user can combine different images or even videos depending on the capability of the system and software and assemble them in the screen as a collage and combine them all together with a click of the mouse.
  • the Mac OS X has the alpha blending functionality built into its very kernel and therefore is better enabled to perform transparency effects and device custom applications involving transparency effects.
  • a window with a transparency value of 100 % would almost be invisible.
  • a window with a transparency value of 0% would be fully visible in the desktop.
  • a partly transparent window with a transparency level of 20 % would display not only its own content but also the content that exists in the underlying window.
  • the windows can contain a live video footage from a camera and a window placed on top of it can contain even an image.
  • the user would see both the image as well as the video footage depending upon the transparency factor set for the image window on top.
  • the boundary boxes of the window can be used as a reference for aligning one window on top of the other and act as a software aide for checking the accuracy of face bow alignments or mounting of casts in the dental articulator.
  • Changes made to the real object namely the dental casts can be viewed in part with the virtual smile information displayed and a correlation can be ⁇ easily made. Therefore this form of interactive visualization through the use of AR has got enormous potential in the field of Dentistry.
  • the comparison of mock-ups or build-ups of teeth over the cast with the actual smile of the patient has enormous amount of application potential particularly in the field of Cosmetic and Aesthetic Dentistry.
  • Figs 3& 4 show the face bow assembly that is used to record and transfer the aesthetic parameters of the patient to the articulator for enhanced real time correlation using video transparency.
  • the real time video transparency is also used for improved visualization of the smile during certain procedures performed chair side seen in fig 4.
  • fig 3 the side views of the face bow assembly is seen being applied to the patient and articulator.
  • 18 in fig 3 is the elastic head frame that can be adjusted to fit the individual or patient.
  • the head frame has a nasion or nose bridge that is used to hold and suspend a camera frame 20 before the patient.
  • the camera bearing frame 20 is seen as an inverted "L"' shaped rod that can be adjusted with a screw mechanism 19 fixed to the nasion or nose bridge.
  • the camera 22 is adjusted so that it would display and acquire a full smile of the patient as shown in the monitor screen 24.
  • the camera is connected to the computer through an USB or Bluetooth wireless connection as indicated in 13 of fig 3.
  • the camera has a screw mechanism 23 that can be used to position the camera depending on the patient's face to capture a full smile as seen in 24 .
  • the camera has a perforated plate 21 which is fixed above it which is used to register the position of the camera 22 after it capture the smile of the patient.
  • a bite fork 25 which has a bite fork plate.
  • a short rod that has been bent at the center in right angles and a perforated plate at the end of the rod is also seen in 26.
  • the bite fork 25 along with the perforated plate 21 on top of the camera is used for registering the camera position.
  • the bite fork which has bite tabs is placed in the patient's mouth and adjusted so that the perforated plates 26 and 21 would be over each other as seen in fig 3.
  • the camera would then capture the smile with the bite fork as seen in the monitor screen as seen in 29 of fig 3.
  • a suitable bite registration material that would set fast is introduced between the perforated plates 26 and 21 as seen in fig 3. Once the material sets the camera and the bite fork that are joined together as one are removed from the rest of the assembly as seen in 28 of fig 3.
  • the captured smile could be in the form of high resolution videos and images.
  • the images and/ or videos are sent to the dental laboratory along with the camera and bite record seen in 28 of fig 3.
  • the dental laboratory technician receives the digital smile infonnation in the form of videos and images and mounts the camera 22 before dental casts at exactly the same orientation at which it took smile images of the patient.
  • the articulator 35 shown at the bottom of fig 3 is first placed on a metallic platform 37 and is held firmly in the platform 37 with the aide of a powerful magnet 36 stuck to the base of the articulator 35.
  • the standard incisal table pin of the articulator is replaced by a rod 31 that would keep the articulator open and at the same time would not block the camera view of the casts.
  • the upper model 30 is articulated or fixed to the articulator using the hinge axis information formerly obtained with the aide of the face bow assembly to capture jaw movements using camera 7 and 3 in fig 2.
  • the upper model or cast is mounted on a magnetic mount which holds the cast in place and can also facilitate easy fixing and removal of the cast in and out of the articulator.
  • the upper model or cast 30 is then removed from the articulator and the bite fork and camera 28 attached to it.
  • Another rod and magnet 34 is used sequentially or in steps to align the camera 22.
  • a cast support 32 is used to hold he bite fork, camera and the model in place.
  • a magnetic mounted receptacle 34 that can hold the camera 22 in place is placed on the metallic plate.
  • the position of the receptacle 34 is adjusted so that a rod can be inserted into the receptacle 34 after it passed through the screw hole of the camera 22.
  • the camera screw is tightened and a quick setting dental stone plaster is used to cement the camera rod with the receptacle.
  • a high speed drill is used to cut the bite fork of remove the bite registration material that holds the camera along with the bite fork.
  • the camera is turned on and live footage video of the cast is viewed in the computer screen 38 of fig 3.
  • the smile video and image records previously obtained while the patient was present are superimposed or alpha blended over the live cast footage. Any restoration or prostheses placed over the cast can be visualized or checked how it fits the patient's smile. This can be done in the total absence of the patient improving the level of correlation between the work done over the dental technician's bench and the actual smile of the patient.
  • Fig 4 shows the camera assembly that captures smile information of the patient before the treatment procedure. Once the smile information is acquired, the cheek retractor is applied or the anesthetic administered.
  • the camera assembly that is lightweight and which comfortably fits the patient is left at the same position to capture live video footage of the retracted view of teeth as seen in 40 of fig 4.
  • the smile videos or images previously acquired before the start of the procedure at the same orientation is then superimposed or alpha blended over the live video footage of the same patient as seen in fig 41.
  • Alpha blending software is then used to make transparent any portion of the screen with the aide of the cursor 42 as seen in fig 4.
  • Whole screen images or videos can be made transparent or selective portions or areas of the smile images can be made transparent revealing the live video information of the retracted teeth at the same orientation. The clinician would therefore be able to work on the actual patient's teeth and at the same time visualize and correlate changes using a number of cosmetic imaging techniques with the actual smile of the patient.
  • the live retracted view footage of patient's teeth is represented by 43 in the screen.
  • Patient's smile image can be acquired into a standard cosmetic imaging program for the post treatment view.
  • the patient's consent is obtained with the post treatment view which can further be used as a template for building actual restorations or prostheses that would fit the patient.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

La présente invention concerne un modèle informatique à réalité augmentée utilisable en dentisterie et faisant appel à un logiciel de mélange alpha et d'analyse du flux optique. Des images ou des vidéos enregistrées du patient sont superposées aux dents ou moulages durant et/ou après la procédure thérapeutique. Un retour d'information amélioré en temps réel est généré par le système en présence et en l'absence du patient. Le système d'arc facial permet de déterminer l'axe charnière de la mâchoire du patient, assure un montage et un transfert précis des modèles dentaires sur l'articulateur, permet la reconstitution des mouvements de la mâchoire, la communication des paramètres esthétiques propres au patient au laboratoire dentaire et une conception, une planification ou une modélisation en temps réel des restaurations ou prothèses permettant au patient de conserver son sourire.
PCT/IN2010/000865 2010-12-29 2010-12-29 Système d'arc facial avec modèle informatique à réalité augmentée utilisable en dentisterie WO2012090211A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IN2010/000865 WO2012090211A1 (fr) 2010-12-29 2010-12-29 Système d'arc facial avec modèle informatique à réalité augmentée utilisable en dentisterie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IN2010/000865 WO2012090211A1 (fr) 2010-12-29 2010-12-29 Système d'arc facial avec modèle informatique à réalité augmentée utilisable en dentisterie

Publications (1)

Publication Number Publication Date
WO2012090211A1 true WO2012090211A1 (fr) 2012-07-05

Family

ID=46382386

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2010/000865 WO2012090211A1 (fr) 2010-12-29 2010-12-29 Système d'arc facial avec modèle informatique à réalité augmentée utilisable en dentisterie

Country Status (1)

Country Link
WO (1) WO2012090211A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104021525A (zh) * 2014-05-30 2014-09-03 西安交通大学 一种道路场景视频图像序列的背景修复方法
WO2017085160A1 (fr) 2015-11-18 2017-05-26 Sirona Dental Systems Gmbh Procédé pour visualiser une situation dentaire
US10166091B2 (en) 2014-02-21 2019-01-01 Trispera Dental Inc. Augmented reality dental design method and system
US10201407B2 (en) 2015-08-18 2019-02-12 International Business Machines Corporation Device and method for facilitating tooth contact adjustment using a pressure device
EP3482680A1 (fr) * 2017-11-14 2019-05-15 Vittorio Gaveglia Dispositif de détection d'images de la bouche d'un patient
US20200405447A1 (en) * 2013-09-19 2020-12-31 Dental Monitoring Method for monitoring the position of teeth
CN112367941A (zh) * 2018-07-05 2021-02-12 登士柏希罗纳有限公司 用于增强现实引导的外科手术的方法和系统
US20210248832A1 (en) * 2016-12-16 2021-08-12 Align Technology, Inc. Mobile device for viewing of dental treatment outcomes
CN113543740A (zh) * 2019-01-30 2021-10-22 登士柏希罗纳有限公司 用于引导口腔内扫描的方法和系统
DE102021105607A1 (de) 2021-03-09 2022-09-15 Zebris Medical Gmbh Anordnung und Verfahren zur Beobachtung von Kieferbewegungen
WO2023012488A1 (fr) * 2021-08-06 2023-02-09 Mitsis Evangelos Système de montage de moule dentaire
IT202200008114A1 (it) * 2022-04-22 2023-10-22 Biomax S P A Dispositivo per previsualizzare l’estetica nella riabilitazione protesica dentale o nell’intervento di riallineamento delle arcate dentarie con allineatori.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340309A (en) * 1990-09-06 1994-08-23 Robertson James G Apparatus and method for recording jaw motion
JP2003000619A (ja) * 2001-06-25 2003-01-07 Yasuyuki Sugano 咬合器調節支援システム
JP2004160119A (ja) * 2002-11-11 2004-06-10 Yasuyuki Sugano コウ合器調節システム
US20070211081A1 (en) * 2006-03-06 2007-09-13 D4D Technologies, Llc Augmented reality system for a dental laboratory
US20090291408A1 (en) * 2008-05-23 2009-11-26 Michelle Stone-Collonge Smile designer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340309A (en) * 1990-09-06 1994-08-23 Robertson James G Apparatus and method for recording jaw motion
JP2003000619A (ja) * 2001-06-25 2003-01-07 Yasuyuki Sugano 咬合器調節支援システム
JP2004160119A (ja) * 2002-11-11 2004-06-10 Yasuyuki Sugano コウ合器調節システム
US20070211081A1 (en) * 2006-03-06 2007-09-13 D4D Technologies, Llc Augmented reality system for a dental laboratory
US20090291408A1 (en) * 2008-05-23 2009-11-26 Michelle Stone-Collonge Smile designer

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200405447A1 (en) * 2013-09-19 2020-12-31 Dental Monitoring Method for monitoring the position of teeth
US10166091B2 (en) 2014-02-21 2019-01-01 Trispera Dental Inc. Augmented reality dental design method and system
CN104021525A (zh) * 2014-05-30 2014-09-03 西安交通大学 一种道路场景视频图像序列的背景修复方法
US10201407B2 (en) 2015-08-18 2019-02-12 International Business Machines Corporation Device and method for facilitating tooth contact adjustment using a pressure device
US10201406B2 (en) 2015-08-18 2019-02-12 International Business Machines Corporation Device and method for facilitating tooth contact adjustment using a pressure device
WO2017085160A1 (fr) 2015-11-18 2017-05-26 Sirona Dental Systems Gmbh Procédé pour visualiser une situation dentaire
US20210248832A1 (en) * 2016-12-16 2021-08-12 Align Technology, Inc. Mobile device for viewing of dental treatment outcomes
US11704876B2 (en) * 2016-12-16 2023-07-18 Align Technology, Inc. Mobile device for viewing of dental treatment outcomes
US20190142259A1 (en) * 2017-11-14 2019-05-16 Vittorio GAVEGLIA Device for detecting images of the mouth of a patient
EP3482680A1 (fr) * 2017-11-14 2019-05-15 Vittorio Gaveglia Dispositif de détection d'images de la bouche d'un patient
CN112367941A (zh) * 2018-07-05 2021-02-12 登士柏希罗纳有限公司 用于增强现实引导的外科手术的方法和系统
CN113543740A (zh) * 2019-01-30 2021-10-22 登士柏希罗纳有限公司 用于引导口腔内扫描的方法和系统
DE102021105607A1 (de) 2021-03-09 2022-09-15 Zebris Medical Gmbh Anordnung und Verfahren zur Beobachtung von Kieferbewegungen
WO2023012488A1 (fr) * 2021-08-06 2023-02-09 Mitsis Evangelos Système de montage de moule dentaire
IT202200008114A1 (it) * 2022-04-22 2023-10-22 Biomax S P A Dispositivo per previsualizzare l’estetica nella riabilitazione protesica dentale o nell’intervento di riallineamento delle arcate dentarie con allineatori.

Similar Documents

Publication Publication Date Title
WO2012090211A1 (fr) Système d'arc facial avec modèle informatique à réalité augmentée utilisable en dentisterie
RU2567604C2 (ru) Динамический виртуальный артикулятор
JP5886740B2 (ja) 仮想歯科模型を整列するためのシステム及び方法
EP2588021B1 (fr) Agencement d'image 2d
US8706672B2 (en) Computer-assisted creation of a custom tooth set-up using facial analysis
ES2896679T3 (es) Producto de programa informático para la planificación, visualización y optimización de restauraciones dentales
EP2593036B1 (fr) Procédé et système d'analyse dentaire
AU2013221673B2 (en) Method and apparatus for dental articulation
US20160317264A1 (en) System and Method for Recording a Bite of an Edentulous Individual
EP2604220A1 (fr) Dispositif de traitement d'informations, procédé de traitement d'informations et programme
AU4076999A (en) Method and apparatus for generating 3d models from medical images
WO2016013359A1 (fr) Ordinateur, procédé mis en œuvre par ordinateur, programme informatique, et arc facial
US20240033061A1 (en) Digital denture design and replacement
CN105816252A (zh) 一种数字化排牙方法
Zimmermann et al. The Impact of Technological Innovation on Dentistry
Caponi et al. Silicone key device for maxilla orientation and occlusal plane recording in a digital workflow
Gallucci et al. Digital Workflows in Implant Dentistry
RU2610911C1 (ru) Система и способ виртуального прототипирования улыбки на базе тактильного компьютерного устройства
Kim et al. Recording the trajectory of mouth opening and closing for the fabrication of an occlusal splint
Al Hamad et al. Virtual patient representation with silicone guide and a 3D scanner accessory for a user-friendly facial scanning workflow: A clinical report of smile design and ceramic veneers
CN114343906B (zh) 咬合垂直距离的获取方法、装置、介质及电子设备
Att et al. Registration of patient-relevant references in edentulous jaws using intraoral scanners: simplification of the clinical procedure.
Rutkūnas et al. Digital Technologies in Clinical Restorative Dentistry
Park Digitalization of virtual articulator: methods, discrepancy to real articulators, comparing of each methods
Anes et al. Mounting digital casts on a virtual articulator by using two-dimensional facial photographs with a facebow: A technique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10861412

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10861412

Country of ref document: EP

Kind code of ref document: A1