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1. WO2020136243 - TOOTH SEGMENTATION USING TOOTH REGISTRATION

Publication Number WO/2020/136243
Publication Date 02.07.2020
International Application No. PCT/EP2019/087083
International Filing Date 27.12.2019
IPC
A61C 7/00 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
7Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
A61C 9/00 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
9Impression methods specially adapted for dental prosthetics; Impression cups therefor
G06T 7/10 2017.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
10Segmentation; Edge detection
A61B 6/14 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
14Applications or adaptations for dentistry
G06T 7/33 2017.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
30Determination of transform parameters for the alignment of images, i.e. image registration
33using feature-based methods
G06T 7/38 2017.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
30Determination of transform parameters for the alignment of images, i.e. image registration
38Registration of image sequences
CPC
A61B 6/032
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
02Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
03Computerised tomographs
032Transmission computed tomography [CT]
A61B 6/14
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
14Applications or adaptations for dentistry
A61B 6/4085
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
40with arrangements for generating radiation specially adapted for radiation diagnosis
4064specially adapted for producing a particular type of beam
4085Cone-beams
A61C 2007/004
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
7Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
002Orthodontic computer assisted systems
004Automatic construction of a set of axes for a tooth or a plurality of teeth
A61C 7/002
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
7Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
002Orthodontic computer assisted systems
A61C 9/006
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
9Impression cups, ; i.e. impression trays; Impression methods
004Means or methods for taking digitized impressions
0046Data acquisition means or methods
0053Optical means or methods, e.g. scanning the teeth by a laser or light beam
006projecting one or more stripes or patterns on the teeth
Applicants
  • TROPHY SAS [FR]/[FR]
Inventors
  • REYNARD, Delphine
  • RIPOCHE, Xavier
  • GLINEC, Yannick
  • JACOB, Jean-Pascal
  • NARCISSE, Pascal
  • CAPRON-RICHARD, Sabrina
  • LAGARDERE, Aude
Agents
  • Wimmer, Hubert G.
Priority Data
18306870.928.12.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TOOTH SEGMENTATION USING TOOTH REGISTRATION
(FR) SEGMENTATION DE DENT À L'AIDE D'UN ALIGNEMENT DE DENT
Abstract
(EN)
A method for segmenting a 3D model image of a patient's dentition obtains a first 3D model image of the patient dentition and obtains a first segmentation of the first 3D model image, wherein the first segmentation provides at least a tooth surface contour and a tooth label for one or more teeth of the first 3D model. A second 3D model image of the patient dentition is obtained. Each segmented tooth surface contour of the first 3D model is registered to corresponding tooth surface contour of the second 3D model. A second segmentation of the second 3D model image is obtained according to the registered tooth surface contour, wherein the second segmentation similarly provides at least tooth surface contour and a tooth labeling for one or more teeth of the second 3D model image. The segmented second 3D model image is displayed, transmitted, or stored.
(FR)
L'invention concerne un procédé de segmentation d'une image de modèle 3D de la dentition d'un patient permettant d'obtenir une première image de modèle 3D de la dentition du patient et une première segmentation de la première image de modèle 3D, la première segmentation fournissant au moins un contour de surface de dent et une marque de dent pour une ou plusieurs dents du premier modèle 3D. Une seconde image de modèle 3D de la dentition du patient est obtenue. Chaque contour de surface de dent segmentée du premier modèle 3D est aligné sur un contour de surface de dent correspondant du second modèle 3D. Une seconde segmentation de la seconde image de modèle 3D est obtenue selon le contour de surface de dent aligné, la seconde segmentation fournissant de manière similaire au moins un contour de surface de dent et un marquage de dent pour une ou plusieurs dents de la seconde image de modèle 3D. La seconde image de modèle 3D segmentée est affichée, transmise ou stockée.
Also published as
Latest bibliographic data on file with the International Bureau