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Automatic analysis algorithm for acquiring standard dental and mandibular shape data using cone-beam computed

Jae Joon Hwang1, Sang-Sun Han2, Chena Lee3

  • 1DDS., PhD., Department of Oral and Maxillofacial Radiology, School of Dentistry, Pusan National University, Yangsan, Korea.

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|September 12, 2018
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Summary
This summary is machine-generated.

A new algorithm uses cone-beam computed tomography (CBCT) data to automatically determine standard dental arch shapes. This method optimizes the panoramic focal trough, enhancing dental radiography image quality.

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Area of Science:

  • Dentistry
  • Radiology
  • Medical Imaging

Background:

  • Cone-beam computed tomography (CBCT) is crucial for dental imaging.
  • Establishing an optimal panoramic focal trough is essential for accurate dental radiography.
  • Current methods for determining focal troughs can be subjective and time-consuming.

Purpose of the Study:

  • To introduce a novel algorithm for automatic determination of standard dental and mandibular arch shapes.
  • To optimize the panoramic focal trough using retrospective CBCT data.
  • To enhance the image quality of dental panoramic radiography.

Main Methods:

  • A custom program analyzed 30 retrospective CBCT images.
  • Mandibular volumetric data were binarized and projected to 2D arch images.
  • Superimposition of mandibular arches generated an average shape; smoothing splines defined the focal trough.

Main Results:

  • The algorithm successfully obtained the center and boundary of the panoramic focal trough.
  • Minimum thickness and transition of the focal trough were determined.
  • The study demonstrated the feasibility of creating standard focal troughs.

Conclusions:

  • The developed algorithm automates the process of defining standard dental arch shapes.
  • Application to larger datasets could establish race-, sex-, and age-specific standard focal troughs.
  • This approach promises to significantly improve dental panoramic radiography image quality.