[Oral allergies].

Oral allergies to dental materials are a growing problem and remain poorly diagnosed by health professionals. The complaints of patients with oral allergy are various and include sensations of burning or stinging of the oral mucosa, sensations of dryness of the oral cavity, or general symptoms such as headache, dyspepsia, asthenia, arthralgia, and myalgia. Signs suggestive of oral allergy include erythema, edema, purpuric patches on the palate, ulcerations of the oral mucosa (canker sore), gingivitis, glossitis mimicking geographic tongue, angular cheilitis, peri-oral eczema or the presence of lichenoid reactions of the oral mucosa. The diagnosis of an allergy will include data from the anamnesis, the clinical examination, as well as the results of allergy tests: epicutaneous tests (patch tests) or cutaneous tests (prick tests), possibly completed by a blood test ( in vitro lymphoblastic transformation test ou LTT).