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June 11, 2026Scientific ReportsOpen Access

3D geometric morphometric analysis of morphological covariation in the modern human postcanine dentition

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Authors

PŠPetra G. ŠimkováVKViktoria A. KrennCFCinzia Fornai

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Overview

Randomized trial uncovers shape covariation in human teeth, indicating implications for dental anthropology.

Key Points

  • This research aims to analyze shape covariation patterns of postcanine teeth using geometric morphometrics.
  • Analyzed 3D shape covariation using micro-CT scans of 526 teeth from 136 individuals.
  • Examined occlusal surfaces and cervical outlines of dentine crowns for correlation patterns.
  • Investigated relationships within and between dental arches regarding masticatory function.
  • High pairwise correlations found within dental arches: lower P3–P4 (r₁=0.89) and upper M1–M2 (r₁=0.86).
  • Highest covariation between antagonistic teeth was upper–lower M1 (r=0.90), lowest in upper P4–lower M1 (r=0.58).
  • Crown height and proportions were main factors driving covariation, independent of allometric effects.

Cite This Study

Šimková et al. (2026) studied this question.

synapsesocial.com/papers/6a2a50b680c8f91e7f39d176https://doi.org/10.1038/s41598-026-56919-2
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