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An improved method for measuring molar wear.

Emma M Lagan1, Daniel E Ehrlich2

  • 1Department of Anthropology, The Ohio State University, Columbus, Ohio, USA.

American Journal of Physical Anthropology
|February 1, 2021
PubMed
Summary
This summary is machine-generated.

A new MolWear method accurately records occlusal dental wear, offering improved analysis for bioarchaeological and comparative studies. This novel approach enhances understanding of molar wear patterns across populations.

Keywords:
bioarchaeologydental wearmethodology

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Area of Science:

  • Bioarchaeology
  • Paleodontology
  • Anthropology

Background:

  • Existing methods for recording occlusal dental wear have limitations in capturing individual variations and comparing wear patterns.
  • Accurate quantification of dental wear is crucial for understanding diet, behavior, and population dynamics in past human and non-human primate groups.

Purpose of the Study:

  • To introduce and evaluate a novel method, MolWear, for recording and analyzing occlusal molar wear.
  • To assess the replicability and accuracy of the MolWear method against established techniques.

Main Methods:

  • Eighty-two lower mandibular first molars from medieval Denmark and prehistoric Ohio Valley populations were analyzed.
  • Wear scores were recorded using the MolWear Android App (Beta) and compared with established methods (Smith and Scott).
  • Statistical analysis included Spearman's correlation coefficients to determine intraobserver and interobserver error and method comparison.

Main Results:

  • The MolWear method demonstrated high intraobserver (r=0.985) and interobserver (r=0.978) repeatability.
  • Strong correlations were found between MolWear and established methods: Smith (r=0.962) and Scott (r=0.891).
  • The MolWear method captured detailed information on wear distribution beyond just the extent of wear.

Conclusions:

  • The MolWear method offers a significant improvement for measuring occlusal molar wear, surpassing limitations of previous techniques.
  • This method provides a more comprehensive analysis of dental wear, suitable for inter- and intrapopulation research.
  • The MolWear method's applicability extends to various Y5 molars, including those from non-human primates and hominins.