为啥还没有发明出可以在家自己洗牙的设备啊
刷牙其实很难完全刷掉牙菌斑
牙菌斑日积月累就更难刷掉了
恨不得每个月都洗牙
但是去医院洗牙也太麻烦了吧
气死

@schreiben 只有冲牙器,比不上医院洗牙但是对刷牙挺好的补充

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