dental calculus meaning in Chinese
齿石
牙垢, 牙结石
牙石
Examples
- As the plaque gets harder and thicker , it becomes what is known as dental calculus or tartar , a hard calcified layer that is irtually impossible to shift with normal brushing , you would hae to get the dental hygienist to do it
菌斑变硬增厚，即形成所谓的牙垢或牙石，它是一层很硬的钙化层，一般不能通过刷牙去除，必须得请牙医处理。