If the bristles of the toothbrush touch the surface of teeth, the plaque on there will be dislodged away just by a few strokes of brushing action with light force.

• 只要牙刷的刷毛有搆到，那里的牙菌斑就会松动掉下来，而且只要轻轻的力量来回摩擦几次即可。