Periodontal breakdown and pathologic root resorption of primary molars following traumatic injuries to the chin: case report.

Traumatic injuries to the chin impact facial and oral soft tissues with lacerations, abrasions, and contusions. The anterior segment of the mandible may be fractured as a result of direct impact to the chin.' Several reports describe fractures of posterior teeth" and the mandibular bone at the subcondyle area." Kennedy reports pulp necrosis in a primary molar as a result of indirect trauma to the chin. No report has described the effect of chin trauma to the supporting tissues of molars. This report presents an unusual pattern of resorption attributed to a traumatic injury to the chin.