PROBLEM TO BE SOLVED: To solve problems of a conventional toothbrush which is insufficient in removing dental plaque through less bristle movement between tooth and gum and in the groove of the clenching part of a molar tooth because the root part of the toothbrush is moved orthogonally to the bristle length in polishing the teeth, and also to solve problems of a Z-shaped and U-shaped stick-polishing toothbrushes of the prior art which sufficiently removed dental plaque but took time as teeth were polished one by one.SOLUTION: The F-shaped stick-polishing toothbrush is characterized in that a revolving axis is provided nearly in the center of the toothbrush shaft, that a groove is made in the end of the toothbrush shaft, with an eccentric cam put in this groove, and with this cam attached to the central axis of a motor, and that, by revolving the motor, longitudinal vibration is added to the tip end of the toothbrush bristles for polishing.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2018,JPO&INPIT【課題】従来の歯ブラシは歯ブラシの根元部分を毛の長さと直角方向に動かして歯を磨いていたので、歯と歯茎の間及び臼歯の噛み合わせ部分の溝は毛の動きが少なく歯垢の除去が不充分であった。先行技術のZ形及びU形つつき磨き歯ブラシは歯垢の除去は充分であったが歯を一本ずつ磨くので時間がかかった。【解決手段】歯ブラシの軸のほぼ中央に回転軸を設け、歯ブラシの軸の端に溝を設けこの溝に偏心カムを入れこのカムをモータの中心軸に取り付け、モータを回転させることにより歯ブラシの毛の先端に長手方向の振動を加えて磨く、F形つつき磨き歯ブラシである。【選択図】図2
