Final answer:
Fluoride in toothpaste prevents tooth decay by forming fluorapatite which is acid-resistant, has antimicrobial properties, promotes remineralization, and blocks acid formation by bacteria.
Explanation:
Fluoride is the mineral contained in toothpaste that helps prevent tooth decay and cavities. It reacts with hydroxylapatite to form fluorapatite, which is more resistant to acidic decay. This mineral also has antimicrobial properties, contributes to remineralization, and blocks acid formation by bacteria, aiding in oral health.
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