Have you ever heard of fluoride?
Fluoride is good to tooth remineralization, and can help the saliva to repair the demineralized enamel.
Fluoride can increase the hardness of the tooth surface, decrease the acid solubility of the enamel and inhibit the growth of bacteria.
The fluoridated toothpaste helps to strengthen the tooth enamel and prevent cavities.
You had better use fluoridated toothpaste when you brush yourteeth.