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Germ Warfare in the Oral Cavity

CSEF · 2002 Materials Science (Junior Division Only)

Justin J. Koh · Fruitvale Junior High School, Bakersfield

Overview

Objectives/Goals This experiment is designed to test what mouthwash is most effective in killing bacteria from the oral cavity. I hypothesized that Listerine would be most effective because it is very strong, chemically. Methods/Materials I cultured bacteria from my mouth on agar plates in an incubator. Later, I tested the different mouthwashes# effectiveness with water as a control variable. Results In the end, the prescription brand, Periogard turned out to be most effective, clearing 9.5 mm compared to Listerine#s 7. Conclusions/Discussion I concluded that this experiment could have been expanded if I had used more test reagents or had been expanded over a longer period of time.

Summary statement

This experiment is designed to test what mouthwash is most effective in killing bacteria from the oral cavity.

Awards (1)

  • Category Award

Competition history

  • CSEF 2002 Materials Science (Junior Division Only) · Entry J1119

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