One way to achieve whiter teeth is use a toothpaste that contains abrasives to remove stains. Unfortunately, abrasives can also remove enamel and dentin.
Parameter: relative dentin abrasion (RDA)
RDA
Abrasiveness
<= 70
low
71 to 100
medium
101 to 150
high
151 to 250
potentially harmful
The upper limit for the FDA is 200.
The upper limit for the ADA is 250.
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