Dreams dictionary: Toothbrush
Dreams dictionary: Interpretation 1
To see or use a toothbrush in your dream suggests that you are feeling defensive about any criticism directed towards you. You are putting up a shield or barrier to protect yourself from potential hurt. Alternatively, the dream means that you are preoccupied with your appearance and are worried about how others perceive you.
Dreams dictionary: Interpretation 2
To dream that you don't want to brush your teeth implies that you tend to speak your mind even if it may offend others.