Patient's question:
NoDoctor's answer:
Now, sealant application has been widely promoted in many places, and many local governments also offer it for free. In fact, even if it's not free, the cost is still affordable, and it's quite inexpensive, so you don't need to worry about the cost issue. As for whether it's harmful to children, that's even more reassuring. The material used for sealant application is completely harmless to the human body.