What Is Relative Dentin Abrasivity (RDA)?

What Is Relative Dentin Abrasivity (RDA)?

Any product that is brushed onto the teeth will have a certain level of abrasiveness, which allows it to polish teeth and remove surface stains. Products that are too abrasive, however, can wear away the structure of the teeth and cause irreparable damage.

Relative Dentin Abrasivity (RDA) gives manufacturers the ability to weigh up the level of stain removal and tooth whitening in a product, versus the potential damage to the structure of the teeth. 

The RDA scale rates dental products numerically, with a higher number, meaning a higher level of abrasiveness. 

  • 0-70 - Low abrasive, gives a gentle polish, but will not cause any damage to the dentin.

  • 70-100 - Medium abrasive, gives a medium weight polish but can cause damage to the dentin if not used correctly.

  • 100-150 - High abrasive, intensive polish and will likely cause damage to the dentin if not handled by a medical professional, such as a hygienist or dentist.

  • 150+ - Very high level of abrasive, and can be very harmful to the dentin.

What RDA is the MySweetSmile Teeth Whitening Powder? Our Powder was formulated and has been rated as a low abrasive, with an RDA score of 70.

The Teeth Whitening Powder uses its abrasiveness to remove stains, but also contains a dedicated stain-removal ingredient, which does not rely on abrasiveness alone. This allows us to offer a product that is a low abrasive, and won’t cause any damage to the structure of teeth when used as directed.