| 摘要 |
<p>An objective of the present invention is to provide a pasty dental bleaching material, which can stably preserve hydrogen peroxide for a long period of time, has excellent adhesion with viscosity being about same level as that of the conventional material, gives few damages to a tooth by pH, and has high efficiency of bleaching to tooth. The pasty dental bleaching agent in the present invention has two structures. In one structure, 10-50 wt.% powdery hydrogen peroxide polyvinyl pyrrolidone complex is blended in a liquid component. In another structure, the pasty dental bleaching agent comprises a pasty first component and a pasty second component. In the first component, 10-50 wt.% powdery hydrogen peroxide polyvinyl pyrrolidone complex is blended in a liquid component. In the second component, 0.01-10 wt.% catalyst for activating hydrogen peroxide and a 1-70 wt.% thickener are blended in a liquid component.</p> |
