Toothpaste Abrasion Ratings

Toothpaste can be good and bad.  Unfortunately the better it is at removing stain, the better it is at removing enamel also.  Stay away from the high abrasive toothpastes as they can remove the luster and polish of porcelain veneers and crowns and dull that beautiful smile.

The RDA value is also known as radioactive dentin abrasion or relative dentin abrasivity. For a toothpaste to be approved by the FDA, it has to have a RDA value…but often this is not included in the marketing or promotion of the product, since a few of them are quite abrasive…
The ADA has adopted a standardized test. Basically, extracted human teeth are irradiated with mild neutrons, mounted and stripped of enamel. The teeth are then inserted into a brushing machine and brushed at a constant pressure and stroke speed. The rinsewater is then measured for its radioactivity and recorded. Thus after a few calculations, a score or index is given to the toothpaste. Any value over 100 is considered to be abrasive. The ADA recommended limit is 250, whereas the FDA limit is 200. Other factors that are taken into consideration is the size, quantity, and surface structure of the abrasive itself.
The RDA table:
0-70 = low abrasive
70-100 = medium abrasive
10-150 – highly abrasive
150-250 = regarded as harmful limit

  RDA Value
Straight Baking Soda 7
Arm & Hammer Tooth Powder 8
Arm & Hammer Dental Care 35
Oxyfresh 45
Tom’s of Maine Sensitive 49
Arm & Hammer Peroxicare 49
Rembrandt Original 53
CloSYS 53
Tom’s of Maine Children’s  57
Colgate Regular 68
Colgate Total 70
Sensodyne 79
Aim 80
Colgate Sensitive Max Strength 83
Aquafresh Sensitive 91
Tom’s of Maine Regular 93
Crest Regular 95
Mentadent 103
Sensodyne Extra Whitening 104
Colgate Platinum 106
Crest Sensitivity 107
Colgate Herbal 110
Aquafresh Whitening 113
Arm & Hammer Tarter Control 117
Arm & Hammer Advance White Gel 117
Close-up with Baking Soda 120
Colgate Whitening 124
Crest Extra Whitening 130
Ultra Brite 133
Crest MultiCare Whitening 144
Colgate Baking Soda Whitening 145
Pepsodent 150
Colgate Tarter Control 165
Colgate 2-in-1 Tarter Control/White 200
FDA Recommended Limit 200
ADA Recommended Limit 250

4 Responses to “Toothpaste Abrasion Ratings”

  1. nice post.. worth reading..

  2. Ben Waaranowitz Says:

    This is just what I was looking for!

  3. Excellent information
    Better late than never

  4. Excellent table. Many periodontists and technicians do not tell you much about differing abrasion results. The sonic (as distinct from mechanical) toothbrushes offer a 30-second signal, but guidance as to what is too much, especially where dentin is exposed, is rare.

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