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Three-dimensional analysis techniques--Part 2: Laser scanning: a quantitative three-dimensional soft-tissue analysis

A M McCance1, J P Moss, W R Fright

  • 1East Grinstead Orthodontic Centre, West Sussex, United Kingdom.

The Cleft Palate-Craniofacial Journal : Official Publication of the American Cleft Palate-Craniofacial Association
|January 1, 1997
PubMed
Summary
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New laser scanning methods accurately measure 3D soft-tissue facial changes. This noninvasive technique effectively analyzes differences in facial morphology for clinical applications.

Area of Science:

  • Medical Imaging
  • Craniofacial Surgery
  • Biometrics

Background:

  • Accurate measurement of soft-tissue morphology is crucial for diagnosing craniofacial anomalies.
  • Existing methods for quantifying 3D facial changes can be complex and invasive.

Purpose of the Study:

  • To introduce and validate novel methods for measuring and averaging 3D soft-tissue morphology and change.
  • To assess facial differences between Class I skeletal males and females using these new techniques.
  • To illustrate surgical changes in a patient undergoing bimaxillary surgery.

Main Methods:

  • Utilized laser scanning technology for data acquisition.
  • Developed a color millimetric scale for precise measurement.
  • Applied techniques to analyze facial morphology and quantify changes in a cohort of Class I individuals.

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  • Documented post-surgical changes in a single patient.

    • Main Results:

    • The laser scanning technique combined with the color coding system proved effective for measuring 3D soft-tissue differences.
    • The method demonstrated simplicity, noninvasiveness, and ease of interpretation.
    • Facial differences between Class I skeletal males and females were successfully quantified.
    • Post-bimaxillary surgery changes were clearly visualized.

    Conclusions:

    • The described laser scanning and color coding system offers a robust and user-friendly approach to 3D soft-tissue analysis.
    • This method is suitable for evaluating facial morphology and tracking changes across the facial complex.
    • The technique has significant potential for applications in orthodontics, plastic surgery, and craniofacial research.