Dental materials are o en suspected to be the caus-ative agent in contact allergic reactions [1, 2, 3, 4]. However, typical morphological correlates are not always found in the oral mucosa. Allergic contact stomatitis generally presents clinically as in ltrated erythema with or without erosions. Having said that, contact allergies occasionally present as lichen-oid lesions in the oral mucosa; in such cases, it is important to perform a comprehensive allergy dia-gnosis to identify and avoid the trigger