The Effectiveness of Various Toothpastes on Oral Bacterial Growth
Hunter Loos, James Baluyut, Arnesa Bislimi, Ikram Boukhadia
- Abstract
- Many toothpaste companies claim to be most effective in removing plaque and bacteria, and even whitening teeth. This study examined four leading brand toothpastes, and their effectiveness in removing oral bacteria from our participants. The products tested were Colgate Total, Colgate Optic White, Sensodyne, and Crest Pro-Health. The active ingredient in all four products was the fluoride ion in various concentrations. Study participants were college students who collected samples with cotton swabs before and after brushing their teeth each morning. Samples were inoculated on nutrient agar plates and incubated for 24 hours at 37 degrees Celsius. Additionally, a modified Kirby- Bauer test was conducted to observe the effects of toothpaste against Staphylococcus aureus, a common skin bacterium. The Kirby-Bauer results were inconclusive due to the lack of S. aureus growth. Nutrient agar plate results indicated that bacterial growth was reduced after brushing when compared to before brushing. While all four toothpaste products were effective in decreasing bacterial growth, Crest Pro-Health was most effective in nearly complete elimination of oral bacteria. While these results suggest Crest Pro-Health is the most effective toothpaste among the four tested, further study is required.
- Presented by
- Hunter Loos
- Institution
- Fordham University




























