WO2009149678A1 - Procédé et appareil pour la production de tracés céphalométriques et l'enregistrement du mouvement des articulations pour le diagnostic orthodontique par utilisation d'une technique magnétique - Google Patents

Procédé et appareil pour la production de tracés céphalométriques et l'enregistrement du mouvement des articulations pour le diagnostic orthodontique par utilisation d'une technique magnétique Download PDF

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Publication number
WO2009149678A1
WO2009149678A1 PCT/DE2008/001827 DE2008001827W WO2009149678A1 WO 2009149678 A1 WO2009149678 A1 WO 2009149678A1 DE 2008001827 W DE2008001827 W DE 2008001827W WO 2009149678 A1 WO2009149678 A1 WO 2009149678A1
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WO
WIPO (PCT)
Prior art keywords
points
patient
head
recording
head cap
Prior art date
Application number
PCT/DE2008/001827
Other languages
German (de)
English (en)
Inventor
Thorsten Brandt
Original Assignee
Orhtotec Oms S.L.
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 Orhtotec Oms S.L. filed Critical Orhtotec Oms S.L.
Priority to DE112008003982T priority Critical patent/DE112008003982A5/de
Publication of WO2009149678A1 publication Critical patent/WO2009149678A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1126—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb using a particular sensing technique
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
    • A61B5/4528—Joints
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
    • A61B5/7207—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts
    • A61B5/721—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts using a separate sensor to detect motion or using motion information derived from signals other than the physiological signal to be measured

Definitions

  • cephalometry presented here without X-ray steels with a mobile head cap represents an alternative to classical cephalostat.
  • the new cephalometry is based on the three-dimensional registration in the magnetic field.
  • the Carbon Mobile Head Cap in combination with a 3D Magnetic Scanner, provides a digital imaging and cephalometric evaluation technique for orthodontic diagnostics, treatment planning and assessment of treatment outcomes.
  • One of the problems of conventional cephalometry is accurate and reproducible positioning in the cephalostat and its verifiability the reproducible positioning in the cephalostat is according to Young-Jooh et al [41] an important criterion for the significance of an X-ray image.
  • the main advantage of the cephalometry without X-rays in each individual representation of a projection plane in the skull center is no longer important.
  • One possible source of error when measuring with the mobile head cap is the slipping of the ultralight carbon head cap during the measurement. If a shift of the cap during the measurement is excluded, the respective position on the head has no influence on the measurement result, since the system calibrates itself. The system finds its respective projection plane by entering the anatomical points.
  • the main advantage lies in the reproducibility of measurements with the mobile head cap.
  • Another advantage is the measuring process as such, which can stand on a chair.
  • the state of the patient described in this way is objective according to the prior art and will also be communicated for research, education and diagnostics.
  • the Values of these measurements may provide a basis for a specific plan for treating a patient. ,.
  • the patient is sitting in a normal orthodontic patient chair for examination and is not firmly clamped in an X-ray machine.
  • the device ie the ultralight head cap, is placed with 3 pressure points and in 4 minutes the points are picked up with the measuring pin with rounded tip. After the last point the finished analysis will be displayed on the computer monitor. Before that, the examiner is guided through the program in a voice-controlled manner without having to look away from the patient. Only the measuring pin is operated.
  • the equipment requires only 220 volts and is mobile, so also on
  • Fig. 2 In the device, that is mobile head cap, 3 integrated magnetic coils, similar to a GPS navigation system, during the measurement with the head forms an immovable unit and determines exactly the position of the measuring pin.
  • Fig. 2: to Fig. 6 show the different projection levels and the fixation of the
  • Fig. 2 All 3 projection levels on the patient moving with the patient when the cap is placed on the patient's head. In this room, the values are displayed in 3-dimensional data.
  • Fig. 3 The median sagittal projection plane on the patient, to which the previous ones from the
  • Fig. 4 The frontal plane to which the previous from the cephalometric technique known
  • Fig. 5 Horizontal plane, the points for horizontal analysis are projected onto this plane.
  • Fig.6 The measuring pin on the lower jaw to show the lower jaw movements. Here are recorded for the movements of the lower jaw continuous measurements for the jaw movements.
  • the lower jaw moves only to the skull and the head cap, which is immovably positioned on the head.
  • Fig.7 The superimposition of the acquired 3D data into a 3D photo scan of the patient with fixed matching points, eg: nasion, subnasal and tragus right, from the outside in different projection planes, here for the lateral analysis, but also for the frontal analysis.
  • fixed matching points eg: nasion, subnasal and tragus right
  • Fig. 8 The superimposition of the acquired 3D data into a 3D-photo-scan of the patient from the inside into different projection planes and 3Dimensional, here for the lateral analysis in the middle of the skull - in this case the representation shifted parallel from inside to outside -, but also for the 3D grid representation within the soft tissue shell.
  • the assignment is made by superimposing 1 to 1 points from the photo scan and from the points obtained with the 3D magnetic scanner.
  • the software program works as follows:
  • Windows audio recorder and a microphone also be re-discussed. A backup copy of all data is recommended. Since these files are stored on the computer that is set up for the survey, this data must be from this
  • the head cap is placed on the patient with about 120 g on the head.
  • foam pads which are replaced by Velcro
  • the cap can be adapted to different head sizes.
  • the foam rubber set is included.
  • the placement, see photo 1 below, is done with light pressure.
  • the dots are picked up with the gray measuring pen, shown in photo 2.
  • the black dot on the measuring pen is the trigger for registering the points.
  • the measuring pen is held like a pencil, with the index finger the foil is pressed down and thereby registers the point.
  • the fingerstall used for the measurement has been omitted.
  • the fingerstall can be fixed with a rubber.
  • the program will announce the next point, e.g. B: Orbital left.
  • the program is started by double-clicking on the icon program started via a menu.
  • the most used measurement is that of the right side of the face. For this the button "3D scan right" is selected.
  • This process can take up to 20 seconds, depending on the speed of the computer, as the software protection and the scanner are searched for.
  • the round tip of the stylus is attached to the
  • Change soft tissue contour is triggered here with the index finger on the stylus.
  • the points may only be measured by medically trained personnel. For this special courses are to be occupied, in which the measuring and the prospecting, as well as the injury-free finding of the points is practiced.
  • the integration function converts 3D data from the face scan to the
  • Planning is done by overlaying the scanner points, so this
  • Shifts of 3D magnetic data take place.
  • scanned models which are integrated into the 3D space grid based on the acquired measuring points in the mouth.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Physiology (AREA)
  • Epidemiology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Rheumatology (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

L'invention porte sur un procédé et un appareil destinés à produire des tracés céphalométriques du splanchnocrâne, et à enregistrer le mouvement des articulations d'un patient, pour un diagnostic orthodontique, en renonçant à la radiographie. A cette fin, une calotte mobile est placée, pendant la mesure et de manière à ne pas bouger, sur la tête du patient à examiner. Un champ magnétique est produit par des bobines disposées dans la calotte, ce champ reconnaissant des données 3D d'un stylet de mesure dans le champ magnétique. Ces données servent à enregistrer des lignes et points intra- et extrabuccaux tridimensionnels du crâne humain. A partir de ces points, le logiciel calcule une représentation graphique en 2D et en 3D, une évaluation, ainsi qu'une relation avec des scanographies en 3D et des enregistrements par tomographie volumique. Les mouvements de la mâchoire inférieure peuvent être enregistrés en continu, la tête gardant sa mobilité.
PCT/DE2008/001827 2008-06-09 2008-11-06 Procédé et appareil pour la production de tracés céphalométriques et l'enregistrement du mouvement des articulations pour le diagnostic orthodontique par utilisation d'une technique magnétique WO2009149678A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112008003982T DE112008003982A5 (de) 2008-06-09 2008-11-06 Methode und Gerät zur Erzeugung von kephalometrischen Zeichnungen und Aufzeichnungen der Gelenkbewegung für die Kieferorthopädische Diagnostik unter Verwendung von Magnettechnik

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2008000942 2008-06-09
DEPCT/DE2008/000942 2008-06-09

Publications (1)

Publication Number Publication Date
WO2009149678A1 true WO2009149678A1 (fr) 2009-12-17

Family

ID=40405024

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/001827 WO2009149678A1 (fr) 2008-06-09 2008-11-06 Procédé et appareil pour la production de tracés céphalométriques et l'enregistrement du mouvement des articulations pour le diagnostic orthodontique par utilisation d'une technique magnétique

Country Status (2)

Country Link
DE (1) DE112008003982A5 (fr)
WO (1) WO2009149678A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017216613A1 (de) 2017-01-13 2018-07-19 Ignident Gmbh System und Verfahren zur Übertragung und Simulation einer an einem Patienten gemessenen Relativposition und/oder -bewegung von einem Unterkiefer (UK) relativ zu einem Oberkiefer (OK) des Patienten

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2715106A1 (de) * 1977-04-04 1978-10-12 Siemens Ag Vorrichtung zur messung des ortes, der lage und/oder der orts- bzw. lageaenderung eines starren koerpers im raum
EP0488987A1 (fr) * 1990-11-26 1992-06-03 Michael Dr. Truppe Méthode de représentation de corps mobiles
US5278756A (en) * 1989-01-24 1994-01-11 Dolphin Imaging Systems Method and apparatus for generating cephalometric images
EP0747662A1 (fr) * 1995-06-05 1996-12-11 Polhemus Incorporated Système de mesure de la position et de l'orientation avec une configuation de la source pour éviter la distorsion
US20030065259A1 (en) * 2001-10-03 2003-04-03 Jaime Gateno Method and apparatus for fabricating orthognathic surgical splints

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2715106A1 (de) * 1977-04-04 1978-10-12 Siemens Ag Vorrichtung zur messung des ortes, der lage und/oder der orts- bzw. lageaenderung eines starren koerpers im raum
US5278756A (en) * 1989-01-24 1994-01-11 Dolphin Imaging Systems Method and apparatus for generating cephalometric images
EP0488987A1 (fr) * 1990-11-26 1992-06-03 Michael Dr. Truppe Méthode de représentation de corps mobiles
EP0747662A1 (fr) * 1995-06-05 1996-12-11 Polhemus Incorporated Système de mesure de la position et de l'orientation avec une configuation de la source pour éviter la distorsion
US20030065259A1 (en) * 2001-10-03 2003-04-03 Jaime Gateno Method and apparatus for fabricating orthognathic surgical splints

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017216613A1 (de) 2017-01-13 2018-07-19 Ignident Gmbh System und Verfahren zur Übertragung und Simulation einer an einem Patienten gemessenen Relativposition und/oder -bewegung von einem Unterkiefer (UK) relativ zu einem Oberkiefer (OK) des Patienten
US11576767B2 (en) 2017-01-13 2023-02-14 Ignident Gmbh Device and method for measuring a movement of a mandible

Also Published As

Publication number Publication date
DE112008003982A5 (de) 2011-05-12

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