About half of the orthodontic personnel had experienced adverse reactions. The majority of the problems were dermatoses, comprising dryness, redness, itching, thickening, reduced tactile sensitivity, fissuring, soreness/desquamation and pain of hands and fingers. The residual were respiratory reactions, eye reactions or reactions of a general nature.
Many of the dermatoses were of moderate severity, attributed to (seasonal) air/ventilation associated problems. Other frequent causes were hand washing procedures, work involving composites and acrylics (orthodontists), or work involving model materials, alcoholic disinfectants, latex gloves, alignates etc. (assistants). For both groups the most severe dermatological reactions were associated with unspecified allergies, acrylics and composites. Non-dermatological reactions also reflected the different working pattern and exposure to materials in orthodontics; acrylic monomer topping the list.
Dermal reactions included redness, eczema, itching and fissuring in facial, neck or perioral areas, mostly attributed to metallic parts of extraoral appliances, with some exceptions (elastics, neck pillows, head caps). Intraoral reactions consisted of redness, soreness and swelling of the oral mucosa, gingiva and/or lips and were associated with metal brackets, labial wires, bonding procedures or acrylic appliances.
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