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Project title Staining of teeth by beveragesFeatured science projectScience project video
Difficulty Level Elementary school
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This science fair project was performed to compare the amount of stains left on our teeth by the beverages we drink. The tests were done by comparing the effects of coffee, tea, grape juice, red wine and Coca-Cola, when exposed to tooth enamel.  

Instructions preview
1. For this science fair project, the independent variable is the type of beverage used to stain the teeth. The dependent variable is the degree of staining on the tooth. This is determined by comparing the stains on the teeth after removing them from the beverages. The constants (control variables) are the temperature of the beverages, the whiteness of the teeth used and time the teeth are left in the cup. 2. Brush the 5 loose teeth with the toothbrush and toothpaste until all the teeth reach a similar color. 3. Fill 5 cups with coffee, tea, grape juice, .....
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