| 摘要 |
Delivery systems for whitening teeth are provided. The delivery systems include a flexible strip of material sized to cover a front surface of a plurality of teeth, wherein the strip of material is substantially flat and a layer of a tooth whitening substance is in contact with the strip of material. The tooth whitening substance includes a whitening active selected from the group consisting of peroxides, metal chlorites, perborates, percarbonates, peroxyacids, hypochlorites, and combinations thereof. The amount of the tooth whitening substance is between about 0.05 grams and about 0.4 grams.
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