Unusual allergic reaction to orthodontic wire: report of a case in a Nigerian patient and implications for clinical management.

Material reactions of both an irritant and hypersensitivity nature are not uncommon in contemporary orthodontic practices. The most common hypersensitivity reactions in orthodontic patients are due to alloy components of metal-based orthodontic appliances. This article reports a case of an unusual reaction to the component of an orthodontic appliance in a 6-year-old girl. There was associated trauma with local irritation. The implications and suggestions for management in the orthodontic clinic are reviewed.