That's because sugars in food, milk and formula can form a plaque-like film. Removal of this film is important to promote good oral hygiene at an early age.
因为辅食、配方奶里的糖份会形成牙菌斑，清除这层细菌膜对建立一个良好口腔卫生基础非常重要。
2
Plaque - Plaque appears as a soft, gooey substance that sticks to the teeth a bit like jam sticks to a spoon.
菌斑—菌斑表现为一种软的，粘性物质贴在牙齿上，就想粘在汤勺上的果酱。
3
Plaque attaches to teeth like jam sticks to a spoon. It can't be totally removed by rinsing, but a light brushing will do the trick.