| Abstrakt: |
The incidence of allergies in general is on the increase. An allergic reaction can also occur during any dental and orthodontic treatment. However, the allergic potential of orthodontic appliances is frequently overestimated. Nickel is the most common metal to cause contact dermatitis in orthodontics. Chromium and Nickel-containing metal alloys, are widely used in orthodontic appliances. An allergic reaction to methylmethacrylate self-curing acrylic resin during orthodontic treatment also had been noticed. Alocalized hypersensitive reaction appeared on the palate after an orthodontic retainer was placed. In general, the most significant human exposure to nickel, chromium and titanium occures through diet, atmosphere, drinking water, clothing fastners, jewelry and iatrogenic uses of articles containing these metals.Since, the oral environment is particularly ideal for the biodegradation of these metals because of its ionic, thermal, microbiologic and enzymatic properties, some level of patient exposure to the corrosion products of these alloys could be assumed, if not assured. [ABSTRACT FROM AUTHOR] |
