| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve the problems in which: in a conventional toothbrush, a tooth is polished by reciprocating-motion of a bristle of the toothbrush in a longer direction and a direction perpendicular thereto; motion of the bristle tip of the toothbrush is insufficient and the bristle does not reach at a portion between a tooth and a gum, at a narrow part between teeth, and at a depth side of a groove on the clenched surface of molar teeth, therefore dental plaque is not sufficiently removed; and then a user gets periodontal disease and dental caries.SOLUTION: A z-shaped picking toothbrush comprises: a main body in Fig. 1 which is a modified Z shape; and a hole which is connected with a vibratory device. A central axis of a bristle of the toothbrush is arranged with an inclination of an angle at approximately 20 degrees against a central axis of the connection hole. An external vibratory device is connected to the connection hole to vibrate in an axial direction of the connection hole. A tooth is polished with a tip of the bristle of the toothbrush to remove dental plaque by picking motion when the bristle of the toothbrush contacts with the tooth, thereby removing dental plaque at a narrow part and a deep part by picking motion, which cannot be removed by a conventional toothbrush so that a user is prevented from getting periodontal disease and dental caries.</p> |
