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Figure 1. Scanning electron micrographs of brackets, before and after artificial saliva exposure. (A) AISI 304 stainless steel brackets before and (B) after 63-day saliva exposure. In (C), low-nickel steel brackets prior to and (D) after 63-day exposure. AISI 304 stainless steel bracket surface (B), with irregular areas suggestive of corrosive attack, and low-nickel steel bracket surface (D), presenting regular and less-altered surfaces after artificial saliva exposure.
