They are abrasive and can wear your enamel away and in the long-term lead to sensitivity and darkening of your teeth as the enamel wears and the inner amber-coloured dentine becomes visible.
2
酸性物质会软化牙釉质，立即刷牙会磨损牙齿。
The tooth enamel is softened by the acid and brushing straight after will wear the teeth down.
3
牙根部覆盖着牙髓，它比牙釉质更易磨损。
The root is covered with cementum, which is worn away more easily than enamel.
点击反馈