If you dream about unhealthy or rotten teeth, it means that you have huge problems or worrying about something very much. The teeth that are clean, beautiful, straight and white signifies a happy domestic happiness and family affairs. The tooth that fallen out denotes something in your waking life that will be lost. You are afraid about something. To dream that somebody else is losing the teeth means that you are worrying about other people either.
Read more about dreaming of Teeth/Tooth in other dream meanings interpretations.