幸运的是，这里列举了几种不上医院，自己在家就可修复、美白牙齿的方法。

Fortunately there are ways to maintain and restore the brightness of your smile at home, without visiting the dentist.

youdao

对于冷光美白牙齿能维持多久时间来说，主要是依据求美者做冷光美白牙齿的次数以及，美牙后的护理来说。

Teeth whitening can be maintained for long time is based mainly on the United States who seek to do as well as the number of teeth whitening, teeth care for the United States.

youdao

让你的牙医给你推荐一款合适的牙膏及牙具并给出洁牙程序的建议，这将帮助你保持牙齿健康又美白。

Get your dentist to recommend a good toothpaste and mouthwash for you and suggest a cleaning routine that will help keep you keep your teeth healthy and white.

youdao