Periodontal Disease Testing Apparatus with Multi-Planar Reconstruction
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Solution Overview
Problem
Current methods for diagnosing and treating periodontal disease struggle to accurately assess the three-dimensional convex-concave shape of the alveolar bone, leading to difficulties in determining the stage and appropriate treatment of the disease, especially with vertical bone defects where instruments cannot be controlled effectively due to surrounding bone walls.
Innovation Solution
A technique using X-ray CT scanners to generate volume data, which includes region setting, axis definition, rotation correction, and multi-planar reconstruction to create developed and rotated images, allowing for the easy display and navigation of the alveolar bone's convex-concave shape on a display surface, enabling more objective and quantitative diagnosis and treatment planning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional X-ray or probing methods are used to diagnose periodontal disease, then the diagnostic process is simple and quick, but the measurement precision and three-dimensional assessment capability are insufficient
Solution Approach 1:
The patent transitions from two-dimensional X-ray imaging to three-dimensional CT volume data representation. The system acquires three-dimensional images of the oral cavity and generates multi-planar reconstruction images (axial, coronal, sagittal views) that provide comprehensive spatial information about alveolar bone structure, enabling accurate assessment of vertical bone defects and convex-concave shapes that cannot be obtained with traditional planar radiographs.
Solution Approach 2:
The patent divides the three-dimensional volume data into multiple cross-sectional planes (axial, coronal, and sagittal views) that can be independently analyzed. This segmentation allows clinicians to examine specific regions of interest from different angles and depths, providing detailed information about bone loss patterns while maintaining overall three-dimensional context.
2Measurement precision
If multi-planar reconstruction and volume data processing are implemented, then the measurement precision and diagnostic accuracy improve, but the device complexity and processing requirements increase
Solution Approach 1:
The patent creates a multi-functional diagnostic system that can generate multiple types of images (axial, coronal, sagittal cross-sections, and three-dimensional volume renderings) from a single set of CT data. This universal approach allows the same hardware and software platform to perform various diagnostic functions including bone level measurement, pocket depth assessment, and treatment planning visualization, reducing the need for multiple specialized devices.
3Loss of information
If traditional two-dimensional radiographs are used, then the ease of operation is high, but the ability to assess vertical bone defects and convex-concave shapes is insufficient
Solution Approach 1:
The patent adds the third dimension to periodontal diagnosis by utilizing CT volume data and generating multi-planar reconstruction images. This enables visualization of vertical bone defects, convex-concave bone shapes, and three-dimensional relationships between teeth and supporting structures, preserving complete structural information that would be lost in two-dimensional projections.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the objective and quantitative assessment of the alveolar bone's shape, improving diagnosis and treatment techniques by providing a clear, three-dimensional representation of the bone structure, reducing reliance on inference and improving treatment outcomes.
Implementation Method 1
an X-ray CT scanner photographing a portion including a tooth, a gingiva, and alveolar bone within an oral cavity to generate volume data of the portion
Data Source
AI summary
A periodontal disease testing apparatus of the present invention includes: an X-ray CT scanner photographing a portion including a tooth, a gingiva, and alveolar bone within an oral cavity to generate volume data of the portion; region setting means setting a related region of a subject tooth based on the volume data; defining means defining a principal axis of the subject tooth; correcting means correcting the related region so as to align the principal axis of the subject tooth with a normal direction of a cross-section of an X-ray CT image; multi-planar reconstruction image generating means generating a multi-planar reconstruction image of the corrected related region; means for generating developed image and the like transforming a coordinate of the related region to generate a developed image and a rotated image; and navigating means indicating correspondences of a spatial coordinate among the multi-planar reconstruction image, the developed image, and the rotated image.