Method for aligning virtual models of dental arches of an individual with a digital model of the face of said individual

A technology of virtual model and digital model, which is used in dentistry, stamping cup, dental prosthesis, etc.

Active Publication Date: 2021-10-29
MODJAW
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the problem is the registration of the virtual model of the dental arch with the 3D model of the patient's face

Method used

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  • Method for aligning virtual models of dental arches of an individual with a digital model of the face of said individual
  • Method for aligning virtual models of dental arches of an individual with a digital model of the face of said individual
  • Method for aligning virtual models of dental arches of an individual with a digital model of the face of said individual

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Embodiment Construction

[0037] The invention proposes, in one aspect, to use an intraoral scanner—or in an alternative embodiment an extraoral camera—to simultaneously scan at least a portion of the tooth surface of a dental arch and at least a portion of a marker affixed to said arch or to A part of the device fastened on the bow is marked (if appropriate), on the other hand, the device for digitizing the face of the individual is used. The result of these operations is a digital record of at least a portion of the arch of the foot and at least a portion of the marking, as well as a digital record of the surface of the face in the same frame of reference as the intraoral scanner. As described in detail below, these records can register the virtual model of the dental arch with the digital model of the patient's face by means of a frame of reference associated with the markers.

[0038] The registration method is implemented by a computer comprising a processor configured to execute algorithms for im...

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Abstract

The invention relates to a method for aligning non-radiographic virtual models of a mandibular arch and of a maxillary arch of an individual with a non-radiographic digital model of the face of said individual, characterized in that it comprises: fastening a mandibular marker rigidly to the mandibular arch of the individual, said mandibular marker defining a first frame of reference; providing a non-radiographic virtual model of the mandibular arch and a non-radiographic virtual model of the maxillary arch; digitizing at least one portion of the surface of the teeth or of a prosthetic device securely fastened to said arch and at least one rigid portion of said marker by means of an intra- or extra-oral camera, so as to produce a digital record of said portions of the mandibular arch and of the marker in a given second frame of reference; on the basis of said record and of the virtual models of the mandibular arch and of the mandibular marker, matching the digital model of the mandibular marker with the marker, and the virtual model of the mandibular arch with said arch, and locating the virtual model of the mandibular arch in the first frame of reference; acquiring a non-radiographic digital model of the face of the patient; and locating the digital model of the face in the first frame of reference, so as to align the virtual models of the maxillary and mandibular arches with said digital model of the face.

Description

technical field [0001] The present invention relates to a method for registering a virtual model of an individual's dental arch with a digital model of the individual's face. One application of this method is to take aesthetic considerations into account during the planning of a treatment in which individual mandibular kinematics are acquired and applied to a virtual model of the dental arch. Background technique [0002] In orthodontics or dental surgery, it is useful to animate a three-dimensional (3D) virtual model of the patient's dental arches (maxillary and mandibular) using the patient's mandibular kinematics in order to plan treatment and / or determine the the effect of the treatment. [0003] Recording of jaw kinematics requires equipping the patient's face with markers that include objects detectable by cameras or inertial-type position sensors, magnetic sensors, or other sensors, and asking the patient to perform jaw movements. During these movements, the object ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C9/00A61C19/045
CPCA61C9/0053A61C19/045A61B5/1079A61C13/0004A61B5/107A61B5/1078A61B5/4542A61B5/4547G16H50/50G06T7/33G06T2207/10028G06T2207/30036G06T2207/30204
Inventor 马克西姆·杰森
Owner MODJAW
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