ObjectiveTo observe the clinical efficacy of drug toothpaste containing 2%Zanthoxylum Nitidum extract in reducing accumulation of dental plaque and occurrence of gingivitis in adults.

• 目的观察含2%25中药两面针提取液的牙膏在减少成年人牙菌斑积聚和牙龈炎形成方面的效果。