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Related Concept Videos

Tooth Anatomy01:21

Tooth Anatomy

1.9K
The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or...
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Interactive OCT-Based Tooth Scan and Reconstruction.

Yu-Chi Lai1, Jin-Yang Lin2, Chih-Yuan Yao3

  • 1Department of Computer Science and Information Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan. cheeryuchi@gmail.com.

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|October 2, 2019
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Summary
This summary is machine-generated.

This study introduces an Optical Coherence Tomography (OCT) framework for detailed dental reconstruction, overcoming limitations of current methods for improved artificial crown construction and period inspection.

Keywords:
OCT-based reconstructioninteractive tooth scanner

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Area of Science:

  • Biomedical Engineering
  • Optical Imaging
  • Dental Technology

Background:

  • Traditional dental reconstruction methods like optical scanning have limitations in reconstructing subgingival (under the gums) areas.
  • X-ray-based methods, while capable of imaging below the gum line, pose risks due to high radiation exposure, limiting their frequent use.
  • There is a need for a safe, effective, and precise method for comprehensive dental reconstruction, including areas beneath the gums.

Purpose of the Study:

  • To develop and validate an Optical Coherence Tomography (OCT)-based framework for high-precision digital dental reconstruction.
  • To address challenges in dental scanning, including subgingival imaging, alignment in featureless areas, and real-time processing for clinical efficiency.
  • To improve the accuracy and efficiency of artificial crown construction and period inspection through advanced imaging techniques.

Main Methods:

  • Utilized Optical Coherence Tomography (OCT) with low-coherence infrared rays for non-ionizing, subgingival penetration.
  • Implemented a framework involving optical rectification, fast Fourier transform, volumetric boundary detection, and Poisson surface reconstruction to handle noisy OCT data.
  • Developed a multi-scan alignment strategy using feature-rich starting points and gyroscope tracking, coupled with Graphics Processing Unit (GPU) acceleration for real-time processing and data transfer.

Main Results:

  • Successfully reconstructed three isolated teeth and a portion of a living tooth with precision comparable to state-of-the-art methods.
  • Demonstrated the framework's ability to overcome noisy imaging and achieve accurate alignment even in flat dental regions.
  • Validated the effectiveness of interactive feedback and GPU acceleration for efficient and rapid clinical scanning through a user study.

Conclusions:

  • The proposed OCT-based framework offers a safe and effective alternative for digital dental reconstruction, enabling detailed imaging of both supragingival and subgingival tooth structures.
  • The integrated approach, combining advanced image processing and optimized scanning strategies, significantly enhances the efficiency and accuracy of dental reconstruction for clinical applications.
  • The study highlights the potential of OCT technology, accelerated by GPUs, to revolutionize dental diagnostics and restorative procedures, offering immediate feedback and precise results.