Vieyra, Jorge Paredes, Fabian Ocampo Acosta, and Mario I. Manriquez Quintana. 2021. “Study on the Outcome of Preoperative Administration of Single-Dose Ketorolac, Ibuprofen 400mg and Placebo on Postoperative Pain in Teeth With Irreversible Pulpitis and Apical Periodontitis”. Recent Developments in Medicine and Medical Research Vol. 2, October, 47-56. https://doi.org/10.9734/bpi/rdmmr/v2/13467D.