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May 4, 2026Dentistry JournalOpen Access

Three-Dimensional Variation of the Human Hard Palate Across Populations: A Geometric Morphometrics Study

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Authors

TCThao Liang ChiamAGAngela GurrTHToby Hughes

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Overview

Randomized trial evaluates palatal shape variation in populations, suggesting a tool for forensic assessments.

Key Points

  • The aim is to evaluate 3D palatal shape variation to distinguish population affinities for forensic purposes.
  • Digitized maxillary dental casts from four population groups (n=100 per group) using a 3D scanner.
  • Utilized Generalized Procrustes Analysis (GPA) and Principal Component Analysis (PCA) for shape data alignment.
  • Employed Canonical Variate Analysis (CVA) and Mahalanobis distances to assess group differences.
  • CVA revealed 88% of between-group variance, distinguishing Europeans from Malays and Chinese.
  • European palates demonstrated longer, narrower, deeper, and more anteriorly tapered shapes.
  • Overall classification accuracy was 45%, with higher specificity (0.70-0.90) but moderate sensitivity and precision.

Cite This Study

Chiam et al. (2026) studied this question.

synapsesocial.com/papers/69f837f53ed186a7399824aahttps://doi.org/10.3390/dj14050258
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