Allergic stomatitis from orthodontic adhesives

We report a case of a type IV hypersensitivity reaction causing oral stomatitis, presumed to be the result of common dental adhesives. The case was diagnosed using patch testing to the dental adhesives that were used in the patient. Both of the adhesives tested contained a form of acrylate that is being seen more frequently in the literature as a cause of type IV hypersensitivity reactions. Metals can cause allergic reactions; however, other contact items need to be considered as a cause of oral allergic reactions. Cases of allergic stomatitis are rising and there is question if all-in-one adhesives may be contributing to this rise.