| 摘要 |
A colored dental floss that changes color when passed between the teeth. The dental floss is coated or impregnated with one or more agents that facilitate the color change by mechanically rubbing the floss against the oral hard tissue or by chemical reaction or both. In addition, the dental floss can be impregnated or coated with an agent that indicates the present of bacterial, disease, virus, infection or the like. Furthermore, the dental floss can be coated or impregnated with a medicament or anti-microbial agent for treat or prevention of disease and the like. |
