Assertion: abrasive toothpaste | /r/CapableOf | wear enamel
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Source sentences:
text: Enamel, the outermost layer of the teeth, is the toughest substance in the human body, according to the American Dental Association (ADA), but rigorous brushing, hard-bristled toothbrushes and abrasive toothpastes can wear enamel away and leave teeth vulnerable to decay.