Akamai Mineral Toothpowder is ideally formulated to remove stains while protecting and preserving tooth enamel.
Akamai Mineral Toothpowder has an RDA of 81, a PCR (Pellicle Cleaning Ratio) of 182, and a CEI (Cleaning Efficiency Index) of 2.64 - rated as "extremely effective" in cleaning stains by an independent 3rd party lab*.

A high Cleaning Efficiency Index indicates high stain removal ability (high PCR) combined with low abrasivity (low RDA).
The Relative Dentin Abrasivity (RDA) is a scale developed by the American Dental Association that uses a standard measurement to assess toothpaste abrasiveness. The higher the RDA score, the more abrasive than toothpaste. It ranges from 0 to 250.
Many see the Cleaning Efficiency Index as a superior indicator when looking at abrasiveness since it measures both abrasiveness and stain removal potential. The Cleaning Efficiency Index (CEI) is calculated according to the equation: CEI = (RDA + PCR – 50) ÷ RDA. The CEI emphasizes the importance of good stain removal properties and low dentin abrasivity.
*Akamai Mineral Toothpowder has been third-party tested by world-renowned Therametric Technologies, Inc.
Notes:
PCR: Pellicle Cleaning Ratio (ability of dentifrices to remove stains)
*The larger the value of the cleaning ratio, the greater the amount of stain pellicle removed by the test*
RDA: Relative Dentin Abrasivity (a standardized scale developed by the American Dental Association)
*Ranging from 0 to 250, the higher the score, the more abrasive the toothpaste*
CEI: Cleaning Efficiency Index
*Ranging from 0 to 2, the higher the score, the better the toothpaste*
**This product is not intended to diagnose, treat, cure, or prevent any disease. The information for this webpage and product has not been evaluated by the Food and Drug Administration**

