| 摘要 |
<p>Improvement in a toothbrush (301), especially for combined brushing of the teeth and massage of the gum, and comprising a plurarily of toothbrush bristles attached at their one end to the head (302) of said toothbrush and having their other end extending freely therefrom, the improvement comprising one or more inner rows or groups of bristles (303a, 303b) of ordinary cleaning quality in combination with adjacent outer rows or groups of bristles (304n, 305n) of smaller height (h) than said inner rows of bristles and provided with free rounded end portions (306).</p> |
