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Visualising trends in dentition to lip mouth morphology using geometric morphometrics

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  • Tobias M R Houlton
  • Nicolene Jooste
  • Maryna Steyn
  • Jason Hemingway

Abstract

Linear measurements taken from bony landmarks are often utilised in facial approximation (FA) to estimate and plan the placement of overlying soft tissue features. This process similarly guides craniofacial superimposition (CFS) practices. Knowledge of how hard and soft tissue features spatially relate around the mouth region is, however, limited. Geometric morphometric techniques have thus been used to investigate size and shape variation in dentition-to-lip mouth morphology in a South African population. Twenty landmarks (twelve dentition, eight lips) were digitised, using cone-beam CT images of the anterior craniofacial complex in a Frankfurt/Frankfort position, for 147 individuals aged between 20 and 75 years. Principal Component Analysis and Canonical Variate Analysis established that much shape variation exists. A two-way ANOVA identified significant (p

Suggested Citation

  • Tobias M R Houlton & Nicolene Jooste & Maryna Steyn & Jason Hemingway, 2022. "Visualising trends in dentition to lip mouth morphology using geometric morphometrics," PLOS ONE, Public Library of Science, vol. 17(9), pages 1-16, September.
    • Handle: RePEc:plo:pone00:0274127
    DOI: 10.1371/journal.pone.0274127
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    References listed on IDEAS

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    1. Li, Baibing & Martin, Elaine B. & Morris, A. Julian, 2002. "On principal component analysis in L1," Computational Statistics & Data Analysis, Elsevier, vol. 40(3), pages 471-474, September.
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