Occupational Asthma Reference

Scherpereel A, Tillie-Leblond I, Pommier de Santi P, Tonnel AB., Exposure to methyl methacrylate and hypersensitivity pneumonitis in dental technicians, Allergy, 2004;59:890-891,


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We report two cases of dental technicians with a diagnosis of hypersensitivity pneumonitis because of inhalation of methyl methacrylate (MMA), occurring within the first weeks of exposure to MMA.

When polishing and grinding prosthesis, dental technicians are exposed to mineral dusts and chemicals. Pneumoconiosis, asthma and hypersensitivity pneumonitis (HP) have been described, linked to silica, silicon carbide, asbestos or metals (1). Methyl methacrylate (MMA) is a monomer, commonly used in dental clinics. Previously, MMA has been shown responsible for occupational asthma, rhinoconjunctivitis, contact dermatitis or stomatitis (2, 3). We report two cases of HP induced by an exposure to MMA in students working in a dental laboratory.

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