Abstract
This randomized study will evaluate in teeth with apical periodontitis the antimicrobial activity and the effect on bacterial products of treatment protocols using intracanal medications with calcium hydroxide [Ca(OH)2], N-acetyl cysteine (NAC) and chlorhexidine (CHX) and their associations. It will be subdivided into 2 subprojects. Subproject 1: It will evaluate the effect of intracanal …