Traumatic self-inflicted bite with embedded tooth fragments in the lower lip.

An unusual case of traumatic self-inflicted bite of the lower lip in a 7-year-old girl is presented. As a result of the bite, due to a fall, four fragments of the right upper incisor tooth were embedded in the lower lip. The large tooth fragment appeared 18 days later, protruding through the skin of the lower lip. Radiographs confirmed the presence of these tooth pieces, which were removed under local anesthesia. Early diagnosis and surgical removal of the tooth fragments could prevent undesirable foreign-body reactions and scarring.