Erythema multiforme, potential complicating factor in dental therapy.

Erythema Multiforme, (E.M.) is an interesting dermatologic disease which has oral manifestations. It presents a diagnostic dilemma because the oral cavity has the ability to produce varied manifestations. The range of possible etiologies fo oral disease is immense. Therefore, the dentist must have a differential diagnosis for all oral lesions. The following case report represents a differential diagnosis problem which hampered routine dental therapy. The oral soft tissue lesions needed to be managed before the endodontic therapy could be completed.