Oral lichenoid lesions and allergy to dental materials.

Background: Dental materials, oral hygiene products and food additives may cause contact allergic reactions in the mouth with varied clinical presentation. Oral lichenoid lesions (lichen planus-like lesions) can be induced by hypersensitivity to dental restorative metals, acrylates, flavorings and other substances.

Aim: The aim of this study was to demonstrate contact allergy to dental materials in patients with oral lichenoid lesions using patch tests.