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Related Experiment Video

Updated: Feb 19, 2026

A Standardized Approach to Extra-Oral and Intra-Oral Digital Photography
06:49

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Three-camera setup to record simultaneously standardized high-definition video for smile analysis.

Akhter Husain1, Parmanand G Makhija2, Aseena Alungal Ummer1

  • 1Department of Orthodontics and Dentofacial Orthopaedics, Yenepoya Dental College, Yenepoya University, Deralakatte, Mangalore, India.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|November 7, 2017
PubMed
Summary

A new photographic setup captures 3-view smile images statically and dynamically. This reliable technique is easy to implement in orthodontic offices for detailed smile analysis.

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Area of Science:

  • Dentistry
  • Orthodontics
  • Biomedical Engineering

Background:

  • Analyzing smile dynamics requires precise, multi-view imaging.
  • Existing methods may lack simultaneous static and dynamic capture capabilities.

Purpose of the Study:

  • To develop a novel photographic setup for simultaneous 3-view static and dynamic smile capture.
  • To create software for processing video clips and individual frames of smiles.

Main Methods:

  • A standardized setup with 3 digital single-lens reflex cameras was used.
  • 96 subjects (aged 18-28) were photographed in natural head position.
  • Reproducibility was tested via same-day and multi-day image acquisition by one operator.

Main Results:

  • High correlation coefficients (0.87-0.93) were observed for same-day and multi-day measurements.
  • Low duplicate measurement error and non-significant mean differences indicated good reliability.
  • The developed system demonstrated high reliability for capturing smile images.

Conclusions:

  • The new technique provides reliable and practical simultaneous high-definition video and still image capture from 3 positions.
  • The method is user-friendly and easily integrated into orthodontic practices.
  • This tool facilitates detailed study of smiles at various stages.