EFFECT OF IRRIGATION WITH PRE-HEATED AND ULTRASONICALLY ACTIVATED SODIUM HYPOCHLORITE AT DIFFERENT CONCENTRATIONS ON POSTOPERATIVE PAIN LEVEL: A RANDOMIZED CONTROLLED CLINICAL STUDY. (2022). Journal of Pharmaceutical Negative Results, 3195-3160. https://doi.org/10.47750/pnr.2022.13.S08.395 (Original work published 2022)