A 34-year-old woman appeared at the office of a general dental practitioner after a bicycle accident. At first, the only injury seemed to be some small tooth enamel fractures. Several weeks later, she developed a swelling in the lower lip and was referred to an oral surgeon. A radiograph of the lower lip revealed some of the tooth enamel fragments. This case-report illustrates the importance of a meticulous examination in case of a patient with a dental trauma.