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Gritting their teeth

A comparison of the wearing effect of plant-derived silica and desert dust on tooth enamel suggests that extreme wear on teeth might not be caused by food. The findings may change some thoughts about the diets of human ancestors.

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Figure 1: Signs of wear.



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Correspondence to Bernard Wood.

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Wood, B. Gritting their teeth. Nature 493, 486–487 (2013).

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