Lợi hại của fluor trong phòng trị sâu răng
Người ta đưa fluor vào nước uống, nước súc miệng, kem đánh răng, viên ngậm... để phòng và trị sâu răng cho cộng đồng. Nhưng khi dùng các sản phẩm có fluor cần lưu ý gì để đạt hiệu quả phòng bệnh cao nhất?
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