| 摘要 |
Some disclosed tooth whitening methods comprise: painting a tooth whitening solution or gel including a bleaching agent onto teeth; and subsequent to the painting, disposing a conforming protective cover over the teeth. In some embodiments, the painting and disposing are performed under the non-interventional guidance of a session guide. In some tooth whitening article of manufacture embodiments, a tooth whitening solution or gel includes a bleaching agent, the tooth whitening solution or gel being configured for paint-on application onto teeth, and conforming protective cover is configured to be conformally disposed over the teeth after painting with the tooth whitening solution or gel. In some embodiments a tooth whitening solution or gel includes a bleaching agent at hydrogen peroxide-equivalent concentration of greater than or about 10 percent and does not include a reactive thickening agent.
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