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CSEF · 2015 Product Science (Physical) (Junior Division Only)

Juliana H. Rosen · Woodside High School, Woodside, San Mateo County

Overview

Objectives/Goals The goal of this project was to find out which toothpaste protected your teeth the most. Methods/Materials Egg shells were used to simulate teeth and vinegar was used to represent acids that are eaten. I tested to see which toothpaste protected teeth the most. To do this, I put an egg brushed with Colgate, Aquafresh or Crest toothpaste in a cup of vinegar. After 9 hours, I took the eggs out, rinsed them, and drained the insides out of the eggs. Next, I let the egg shells dry and then weighed the egg shells. Results The egg shell from the egg covered with Crest toothpaste weighed more than Aquafresh and Colgate covered egg shells. Conclusions/Discussion Crest toothpaste protects the egg shell better than the other toothpastes becasue it weighed more which means the acids didn't eat away at the egg shell as much.

Summary statement

The experiment tested how toothpaste protects your teeth.

Help received

My parents helped me gather supplies for my experiment and my poster board.

Competition history

  • CSEF 2015 Product Science (Physical) (Junior Division Only) · Entry J2028

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