If you dreamed about someone else brushing their teeth: You should avoid arguing with the people you do business with, you will see that you do not like the limitation of being socially accepted. To see someone else brushing their teeth in a dream means saying nice words, not upsetting your loved ones, having a good life and not needing anyone. Not wanting to brush someone else's teeth in a dream means hearing bad words and being sad, having trouble, having hard days, and shedding tears.