During toothbrushing, bristles should be placed at an angle against the gum margins, gently move the toothbrush back and forth in small amplitude like massaging the gums with only the bristles moving but the toothbrush head hardly moves.

  • 刷牙时,刷毛要斜斜的放在牙龈旁边。刷牙的动作幅度不要大,前前后后的,好像在摩擦牙齿,刷毛在摆动,但牙刷头只是少许摆动。

  • 互联网摘选 2025-01-20 11:43:53

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