The control group:Use except pu di lan ke yan ning chinese herb drug ingredients, other ingredients are the same as the pu di lan ke yan ning toothpaste

Efficacy of a new dentifrice containing Chinese herb extracts for gingivitis and Inhibiting dental plaque: a double-blind randomized-controlled trial in adults in China

Efficacy and safety of a new dentifrice containing Chinese herb extracts for dentin hypersensitivity: a double-blind randomized placebo parallel controlled trial