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Methods for whitening teeth
专利权人:
Paul Albert Sagel
发明人:
Paul Albert Sagel
申请号:
US13150392
公开号:
US09642687B2
申请日:
2011.06.01
申请国别(地区):
US
年份:
2017
代理人:
摘要:
In a tooth whitening method, a whitening composition is applied to at least one tooth. The whitening composition is maintained on the at least one tooth for a first time period. After the first time period, a light radiation is directed toward the at least one tooth for a second time period. The first time period has a duration greater than 50% of a total duration of the first and second time periods. The whitening composition is removed from the at least one tooth.
来源网站:
中国工程科技知识中心
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