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Related Experiment Video

Updated: Dec 2, 2025

Precision of In Vivo Quantitative Tooth Wear Measurement Using Intra-Oral Scans
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Phytoliths can cause tooth wear.

Fernando Rodriguez-Rojas1, Oscar Borrero-Lopez1, Paul J Constantino2

  • 1Departamento de Ingeniería Mecánica, Energética y de los Materiales, Universidad de Extremadura, 06006 Badajoz, Spain.

Journal of the Royal Society, Interface
|November 4, 2020
PubMed
Summary
This summary is machine-generated.

Phytoliths, plant-based silica bodies, can abrade tooth enamel as effectively as silica grit. This finding is relevant to understanding tooth wear in animals and humans.

Keywords:
phytolithssilica grittooth enamelwear rate

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Area of Science:

  • Paleontology
  • Materials Science
  • Dental Research

Background:

  • Tooth wear is a significant factor in the diet and survival of many animal species.
  • The relative contribution of intrinsic plant phytoliths versus exogenous environmental grit to tooth wear is debated.
  • Understanding enamel abrasion mechanisms is crucial for dental health and evolutionary studies.

Purpose of the Study:

  • To compare the enamel-abrasive potential of phytoliths and silica grit under controlled laboratory conditions.
  • To investigate the role of phytoliths as a potential agent of tooth wear in comparative biology.

Main Methods:

  • Human molar teeth were subjected to sliding wear tests in artificial saliva.
  • A pin-on-disc configuration used molar cusps against a hard disc antagonist.
  • Phytolith and silica grit concentrations and sizes mimicked natural conditions; wear was measured by digital profilometry.

Main Results:

  • Phytoliths demonstrated an abrasive capacity comparable to silica grit on enamel.
  • Abrasion volumes were quantified using digital profilometry.
  • Wear patterns were analyzed in the context of evolutionary debates on tooth wear agents.

Conclusions:

  • Plant-derived phytoliths are significant agents of tooth enamel abrasion.
  • Findings contribute to the understanding of dietary influences on dental wear in evolutionary contexts.
  • Phytoliths may play a substantial role in tooth wear across various animal species.