48 hours<span>Most plaque hardens within 48 hours of formation, and within several days it will become so hard that it is almost impossible to remove. This hard substance is tartar and the only way to remove it is to see your dentist for a professional scraping of your teeth.
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Answer:
You should visit your doctor to see how you can treat it
Be very precautious in sexual activities
Explanation:
Disadvantage: some places might not accept private health care....?
