Abstract
The objective of this study will be evaluated, by scanning electron microscopy analysis, the effect of peracetic acid solution 0,5% and 2% and sodium hypochlorite solution 5,25% in the root canal walls after rotary instrumentation. Will be used 80 single-rooted human roots with standardized length of 16 mm and will have their canals instrumented by two rotary systems (Biorace and Mtwo), v…