很少有美白牙膏经过任何形式的临床试验，有些美白牙膏摩擦剂含量过多，会伤害你的牙齿或让你的牙齿变得过分敏感。
Very few whitening toothpastes have undergone any type of clinical trial, and ones that are too abrasive can damage teeth or make them very sensitive.
如果刷牙后你的牙齿或者口腔更为敏感，换个牙膏试试。
If your teeth have become more sensitive or your mouth is irritated after brushing, try changing toothpastes.
这是一些特别适合牙齿敏感使用的牙膏。
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