Cách chống vàng răng
(TNO) - Răng thường trở nên ố vàng do mảng bám vốn về cơ bản là một lớp chất bẩn “định cư” lâu dài trên răng. Khi chúng ta lớn tuổi dần, lớp men trên răng bị bào mòn và bắt đầu thẩm thấu màu thực phẩm.
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