Toothpastes containing either of these F sources are both safe and effective against caries.
含有上述浓度氟化物的牙膏能够安全有效的帮助预防龋齿.
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A number of at - home teeth whitening products – kits, strips, and toothpastes – may lighten stains.
一些家庭的牙齿美白产品--套盒, 牙带和牙膏可减轻色斑.
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Some whitening toothpastes work with peroxide and baking soda -- whitening teeth through mild bleaching.
一些美白牙膏含有过氧化氢化合物和小苏打的成分 - 通过温和的漂白作用使牙齿美白.
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