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Apparatus and method for whitening teeth
专利权人:
Ji-Young Kim
发明人:
Ji-Young Kim,Jong-Ho Kim,Sug-Youn Chang,Sei-Young Yun,Hae-Young Yang,Sang-Hoon Kwak
申请号:
US10717226
公开号:
US08652446B2
申请日:
2003.11.19
申请国别(地区):
US
年份:
2014
代理人:
摘要:
Disclosed herein is a pair of dry type patches for teeth whitening, having a patch for upper teeth and a patch for lower teeth, in which the patch for upper teeth has a shape different from the patch for lower teeth, and each patch has a controlled width and shape such that the contact area of each patch with gums is minimized. In the patch for upper teeth, a central portion covering right and left upper central incisors is widest. In the patch for lower teeth, either portion covering right and left lower canine teeth is widest. Since the dry type patches covers all the portions of the teeth while minimizing the contact area with gums, no or little irritation is caused and wearability is excellent.
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中国工程科技知识中心
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