3D Tooth Movement Processing Using Stable Bone References
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Solution Overview
Problem
Existing orthodontic treatment plans lack the ability to quantitatively grasp the movement of each tooth during orthodontics, limiting the accuracy of treatment adjustments.
Innovation Solution
A data processing device and method that utilizes three-dimensional data captured before and after orthodontics to compare tooth positions using a stable bone structure as a reference, calculating the movement amount of each tooth and generating superimposed and moving images to visualize the changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If three-dimensional data is captured and processed to quantitatively measure tooth movement, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system segments the three-dimensional data into distinct anatomical structures (teeth, bone, gingiva) and processes each segment separately. This allows precise measurement of tooth movement relative to stable bone structures while managing data complexity through organized segmentation of different tissue types.
Solution Approach 2:
The patent uses stable bone structures as intermediary reference points to measure tooth movement. By establishing a coordinate system based on immobile bone, the system creates an objective reference frame that enables accurate quantification of tooth displacement without requiring direct comparison between changing soft tissue structures.
2Loss of information
If three-dimensional images are processed to visualize orthodontic progress, then information completeness is improved, but loss of time increases
Solution Approach 1:
The system performs preliminary segmentation and coordinate system establishment on the initial three-dimensional scan data before treatment begins. This preliminary processing creates a reference framework that accelerates subsequent comparisons, allowing faster generation of progress visualizations without reprocessing all raw data each time.
Solution Approach 2:
The patent creates digital copies and models of the patient's dentition from three-dimensional scans. These digital replicas can be manipulated, measured, and compared without handling physical specimens, enabling rapid iteration and analysis of orthodontic progress while preserving all measurement information.
Data Source
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AI summary
Provided is a technique that allows a dentist to accurately grasp movement of each tooth. A data processing device (100) processes three-dimensional data of teeth. The data processing device (100) includes an input unit to which the three-dimensional data including a bone of a part of a head and a plurality of teeth captured by an X-ray CT imaging device (200) is input, a data processor that performs data processing based on the three-dimensional data input to the input unit, and an output unit that outputs the three-dimensional data processed by the data processor to an external device. The three-dimensional data further includes position information and is segmented into the bone of the part of the head and the plurality of teeth. The data processor compares the three-dimensional data captured at different timings based on a reference provided on at least the bone of the part of the head.