| 摘要 |
A rubber-nylon-mixture bristle toothbrush which does not injure teeth nor gums and can perform effective tooth-brushing and gum-massaging at the same time, and which comprises a toothbrush head integrally formed by rubber triangular or quadrangular pyramidal bristles and nylon bristles and a handle with a serrated irregular connection section provided between the head and the handle.
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