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This design aims to protect people’s gums through a deformable structure of the brush head. It is mainly for people with weak gums, especially for children who lack the correct knowledge of brushing. The idea is that when the brushing force is too large, the toothbrush head is subjected to force deformation, and the force is sequentially weakened from the center to the outer side, thereby reducing the damage to the gums. Also, when the teeth are cleaned, the middle fine hair can be cleaned to a more remote position, and the other positions of the brush head will not be damaged to the gums.