Product Testing - The Great Toothpaste Challenge

Relative Dentin Abrasivity (RDA)

A toothpaste's abrasiveness is measured by its Relative Dentin Abrasivity (RDA). The table below shows the RDA of some common toothpastes. Whenever possible use the toothpaste with the lowest RDA rating.

 

Relative Dentin Abrasivity (RDA)

Colgate 68
Tom's of Maine 93
Mentadent 103
Crest 106
Colgate Platinum 106
Aquafresh Whitening 113
AIM 185
Close-Up 218

 

Whitening Toothpastes: Contrary to what many people think, whitening toothpastes do not increase the whiteness of the underlying tooth. What they do is remove stains so that the underlying whiteness of the tooth becomes more apparent. Think of these toothpastes as "carwashes" for your teeth. In the same way that a good car washing removes the dirt and grime on your car making it sparkle, whitening toothpastes remove stains and plaque from your teeth, making your smile shine.

It is important to note that while effective in removing stains, some brands of whitening toothpastes can destroy tooth enamel in the process. Due to their harsh abrasives, these toothpastes, over time, may strip tooth enamel, making teeth appear yellow and causing teeth to become sensitive to cold or hot foods and liquids, sweets, baking soda, and highly salted foods.

 

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