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Diseases Science Fair Project

Soda and Teeth: A Science Experiment

Soda and Teeth: A Science Experiment | Science Fair Projects | STEM Projects
Ever wanted to know which soda is the worst for your teeth? In this experiment, you'll test the pH of different sodas and measure the effect on your teeth enamel.


The hypothesis is that Pepsi will be the worst because it has a lot of acid and acid is bad for teeth enamel.

Method & Materials

You will test the pH of different sodas, measure and record the amount of limestone, and wait 24 hours to measure the effect on your teeth enamel.
You will need pH Hydrion paper, granulated limestone, a coffee filter, a graduated cylinder, and cups.


The experiment showed that Pepsi was not the worst for your teeth enamel, as the hypothesis suggested. Diet Root Beer was the worst, and Dr. Pepper was right behind it. The best soda to drink was Sprite, although its diet version didn't do so well.

Why do this project?

This science project is interesting because it shows that diet sodas are actually worse for your teeth than regular sodas.

Also Consider

Experiment variations to consider include testing different types of sodas, testing different amounts of limestone, and testing different lengths of time for the limestone to soak in the soda.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!
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