目的：研究洁白牙贴增白牙齿的效果。
Objective: to study the effect of tooth whitening strip on tooth bleach.
随着人们对口腔卫生的日益关注，增白牙齿技术变得越来越重要。
With the increasing of the people's concerns about the oral hygiene, the tooth whitening is getting more and more important.
有些人还是喜欢古老的家庭自备方法来增白牙齿，如用小苏打轻轻刷牙美白牙齿。
Some people still prefer the age-old home remedy of baking soda and a toothbrush to gently whiten teeth at home.
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