Method for virtual setup with mixed dentition
Inventors
Reynard, Delphine • Capron-Richard, Sabrina • Henry, Sebastien • Chen, Shoupu • Lagardere, Aude • JACOB, Jean-Pascal
Assignees
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Publication Number
US-11896452-B2
Publication Date
2024-02-13
Expiration Date
Abstract
A method for visualizing patient dentition acquires a contour image of patient dentition and segments the contour image to identify one or more segmented teeth. At least one deciduous tooth among the one or more segmented teeth is identified. A virtual model of a target dentition arrangement of the patient dentition is generated, wherein the at least one deciduous tooth is replaced by a replacement permanent tooth.
Core Innovation
The invention relates to visualizing a patient dentition orthodontic treatment by acquiring a surface contour model of patient dentition, segmenting the surface contour model to identify one or more segmented teeth, and identifying at least one unerupted tooth within the surface contour model. The unerupted tooth is identified using at least one of three-dimensional volume acquisition or panoramic radiography, and shape and size information for the unerupted tooth is accessed based, at least in part, on the same three-dimensional volume acquisition or the panoramic radiography.
Based on the accessed shape and size information, a substitute model tooth is identified so that it reflects a replacement permanent tooth model. A virtual setup of the patient dentition is then generated in which a location corresponding to the unerupted tooth is replaced by the replacement permanent tooth model. In the mixed dentition context described, deciduous teeth are detected and replaced in a virtual target arrangement with replacement permanent teeth models.
The documented workflow also encompasses determining and configuring aspects of the virtual setup and its assessment, including virtual setup optimization with jaw size determination and simulation options. The described evaluation can use operator preferences and operator-specified metrics, and the virtual setup can be displayed with dynamic feedback for metrics and discrepancy evaluation as a virtual arrangement is refined.
Claims Coverage
The independent claims are directed to (i) a method that generates a virtual setup by replacing unerupted tooth locations using imaging-derived substitute model teeth, (ii) a related method variant that receives segmented teeth from a virtual model of an initial tooth arrangement and generates a virtual setup for a target tooth arrangement, and (iii) an apparatus that performs the same imaging-based workflow and displays the virtual setup. Across these independent claims, the core inventive approach uses imaging-based identification and characterization of an unerupted tooth, followed by substitution with a replacement permanent tooth model to generate and display a virtual orthodontic setup.
Surface contour acquisition and segmented tooth identification for a virtual setup
acquiring a surface contour model of patient dentition; segmenting the surface contour model to identify one or more segmented teeth
Unerupted tooth identification using three-dimensional volume acquisition or panoramic radiography
identifying at least one unerupted tooth within the surface contour model, wherein the at least one unerupted tooth is identified using at least one of three-dimensional volume acquisition or panoramic radiography
Shape and size access for the unerupted tooth based on imaging
accessing shape and size information for the unerupted tooth based, at least in part, on the at least one of the three-dimensional volume acquisition or the panoramic radiography
Substitute model tooth reflecting a replacement permanent tooth model
identifying a substitute model tooth based at least in part on the shape and size information for the unerupted tooth, wherein the substitute model tooth reflects a replacement permanent tooth model
Virtual setup generation by replacing the unerupted tooth location with the replacement permanent tooth model
generating a virtual setup of the patient dentition, wherein a location corresponding to the at least one unerupted tooth is replaced by the replacement permanent tooth model
Receiving segmented teeth from a virtual model of an initial tooth arrangement
receiving a plurality of segmented teeth from a virtual model of an initial tooth arrangement
Virtual setup generation for a target tooth arrangement by replacing a location corresponding to the unerupted tooth
generating a virtual setup of a target tooth arrangement wherein a location corresponding to the at least one tooth is replaced by the replacement permanent tooth model
Imaging apparatus plus processor workflow for unerupted-tooth replacement virtual setup
an imaging apparatus configured to acquire a surface contour of patient dentition; a processor programmed with instructions that (i) segment the dentition surface contour to identify one or more segmented teeth; (ii) identify at least one unerupted tooth within the surface contour model, wherein the at least one unerupted tooth is identified using at least one of three-dimensional volume acquisition or panoramic radiography; (iii) access shape and size information for the unerupted tooth based, at least in part, on the at least one of the three-dimensional volume acquisition or the panoramic radiography; (iv) identify a substitute model tooth based at least in part on the shape and size information for the unerupted tooth, wherein the substitute model tooth reflects a replacement permanent tooth model; and (v) generate a virtual setup of a target dentition arrangement, wherein a location corresponding to the at least one unerupted tooth is replaced by the corresponding permanent tooth model
Displaying the virtual setup
a display in signal communication with the processor, and configured to display the virtual setup
The independent claims consistently require imaging-based identification of an unerupted tooth (using three-dimensional volume acquisition or panoramic radiography), accessing shape and size information, selecting a substitute model tooth that reflects a replacement permanent tooth model, and generating a virtual setup by replacing the unerupted tooth location with the replacement permanent tooth model; the apparatus claim additionally specifies a processor-implemented workflow and a display of the virtual setup.
Stated Advantages
Documented Applications
No documented applications found
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