Duraphat, tandpasta, Toothpaste (cosmetic product), fluoride concentration: 1,450 ppm clinical trials

High-dosage fluoride toothpaste for root caries control (in situ): a randomized, controlled clinical trial

This study looks at how a strong fluoride toothpaste helps prevent or reverse tooth decay on the roots of teeth. Researchers used special tooth samples to see if the higher fluoride levels could make teeth stronger and battle decay.