Assertion: toothpaste's hydroxyapatite | /r/ObjectUse | used in toothpaste
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Source sentences:
text: After many years of laboratory experiments and field trials, its hydroxyapatite ingredient was approved as an active anti-caries agent by the Japanese Ministry of Health in 1993, and given the name Medical Hydroxyapatite to distinguish it from other forms of hydroxyapatite used in toothpaste, such as dental abrasives.