“With gentle toothbrush powders with a low RDA value, for example from Teethloovers (teethlovers.de), the powder dissolves immediately in the mouth, so there is no risk of abrasion on the tooth enamel. The teeth feel as smooth with the tongue as if they had been polished. Studies have also shown that tooth powders can remove plaque and stains more effectively than toothpastes [2].”
Full article by dental hygienist Birgit Schlee here.