ABSTRACT
Different types of corrosion may occur in the oral cavity. Accordingly with T. Eliades and A. Athansiou, corrosion forms can be classify according to the appearance or attack mode and according to its different causes and mechanisms. The roughness and the arches surface is strongly related with its corrosion. Oshida and colleagues reported that the defects produced during the manufacture process of the orthodontic wires are areas susceptive to corrosion. In order to withstand corrosion, stainless steel alloys depend on the formation of an oxide passive film at its surface. The acidic conditions of the oral environment can contribute to these processes. After immersion in their respective conditions, all samples were placed in an ultrasonic bath with 96% ethanol for 50 minutes. After complete drying, and for material characterization by scanning electron microscopy, springs were fixated in an aluminum support with double sided carbon tape.
