“酸会损伤牙釉质，使其软化。”Dr .Jones说。
刷牙力气过大更容易损伤你的牙釉质。 。
Thee chances of enamel breakage are greater when you brush too hard.
但牙医提醒说，有些方法可能会损伤覆盖在牙齿上的牙釉质，反而让牙齿显得更黑。
But dentists said some of the methods can erode the enamel covering of the teeth making them appear darker rather than whiter.
上端前齿过薄，牙釉质几乎消失，牙齿也有损伤。
Upper front teeth that are paper thin, with the enamel almost completely worn away, and teeth that hurt.
专业人士提醒，网上传播的用苏打粉、灰末以及过氧化氢进行牙齿儿美白的方法，若没有牙医的指导，会损伤牙釉质，给牙齿儿带来永久的危险。
self-treatments using baking soda, ash and hydrogen peroxide provided online with no dental experience, can strip tooth enamel and cause lasting damage to the gums, experts cautioned.
专业人士提醒，网上传播的用苏打粉、灰末以及过氧化氢进行牙齿儿美白的方法，若没有牙医的指导，会损伤牙釉质，给牙齿儿带来永久的危险。
self-treatments using baking soda, ash and hydrogen peroxide provided online with no dental experience, can strip tooth enamel and cause lasting damage to the gums, experts cautioned.
应用推荐