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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True! If you think positively, it will improve your self esteem.
<span>assess the rate, regularity, and quality of her carotid pulse</span>