(Setting the tooth on its edge.) To set one’s tooth on its edge in a dream means a betrayal carried by a member of one’s family the tooth represents. This includes one’s children, wife, partners, or employees. To set one’s teeth on their edge in a dream also could mean changes in one’s behavior that may lead to a changing attitude on the part of such family members. (Also see Body 1 | Tooth)
Read more about dreaming of Teeth 2 in other dream meanings interpretations.