Which Whitening Toothpaste Has the Best Short-Term Whitening Effect on Teeth?

Overview

Objectives/Goals My objective was to figure out which whitening toothpaste whitened teeth the fastest. I believed that the toothpaste that contained the most titanuim dioxide, hydrated silica, soduim bicarbonate, and sondium carbonate woulkd have the best effect on teeth because these ingrediants take off surface stains on the teeth and coat the teeth to make them appear white. Methods/Materials Four whitening toothpastes were tested on four people for a one month period.Of the four toothpastes, three had an ADA (American Dental Association) seal, and one did not. All of these toothpastes contained at least one of the following whitening ingrediants: titanium dioxide, hydrated silica, sodium bicarbonate, and soduim carbonate. Results The participants brushed their teeth twice a day with their assigned toothpastes. Every Sunday for the four week period, between eight and eight thirty p.m., I took the tooth shade measurements of the participants teeth. Eahc time, I mad sure to measure the same tooth, in the same light and room. At the end of the four week period, I was able to calculate the average tooth shade and the difference in tooth shades, which helped me to make my conclusion. Conclusions/Discussion After conducting the experiment, I found that my hypothesis was correct. My conclusion was that the toothapste that contained the highest ammount of titanium dioxide, hydrated silica, sodium bicarbonate, and soduim carbonate, had the best whitening effect on the participant's teeth.

Competition history

• CSEF 2003 Materials Science (Junior Division Only) · Entry J1117

Resources

• CSEF project summary ↗

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