Stevens-Johnson syndrome and abnormal root development: a case report.

A boy developed Stevens-Johnson syndrome (erythema multiforme) 2 weeks after taking a course of slow-release theophylline at the age of 9 years. He had suffered from bronchial asthma since early infancy. He did not attend for dental treatment until the age of 14 years, when panoramic radiography demonstrated varying degrees of arrested root development in the permanent dentition.