你应该知道的事

YSK:牙釉质一旦受损,就无法恢复。然而,被削弱的牙釉质可以通过提高其矿物质含量在一定程度上得到恢复。
YSK: Once tooth enamel is damaged, it cannot be brought back. However, weakened enamel can be restored to some degree by improving its mineral content.
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