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Related Experiment Videos

Measuring system for lip movements using two video trackers.

T Sekita1, S Minakuchi, Y Hirano

  • 1Department of Geriatric Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University, Tokyo, Japan. t.sekita.gero@dent.tmd.ac.jp

Journal of Oral Rehabilitation
|December 7, 2000
PubMed
Summary
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Researchers developed a 3D system to measure soft tissue movements in the mouth, crucial for understanding chewing and speech. This new technology accurately tracks lip and cheek motion during functions like eating.

Area of Science:

  • Biomedical Engineering
  • Oral Physiology
  • Biomechanics

Background:

  • Soft tissue movements of the lips and cheeks significantly impact mastication and phonetics.
  • These movements also play a role in the stability and interaction of dental prosthetics with the oral environment.

Purpose of the Study:

  • To develop and evaluate a novel three-dimensional (3D) measuring system for quantifying soft tissue movement.
  • To assess the system's accuracy and resolution for potential applications in oral function analysis.

Main Methods:

  • The system utilized stereographically placed video trackers and a computer, with an additional tracker for mandibular movements.
  • Accuracy was validated using a computerized XYZ pulse stage, achieving a resolution of 0.10 x 0.10 x 0.10 mm.
  • Lip movements during mastication were analyzed in a dentulous subject.

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Main Results:

  • The developed 3D system demonstrated high accuracy and resolution for measuring soft tissue dynamics.
  • The system successfully captured lip and mandibular movements during chewing.
  • The study confirmed the system's capability for analyzing complex oral soft tissue motion.

Conclusions:

  • The novel 3D measuring system is valuable for the analysis of soft tissue movements.
  • This technology offers potential for enhanced understanding of oral functions like mastication and phonetics.
  • The system provides a precise tool for research in dental prosthetics and oral rehabilitation.