Comparison of Pre-emptive Analgesic Effect of Paracetamol, Ibuprofen, and Placebo in Reducing Post-operative Pain in Intra-alveolar Tooth Extraction at The University of Benin Teaching Hospital, Benin City. A Randomised Trial.: Pre-emptive analgesic effect of paracetamol and ibuprofen in tooth extraction. . NIGER DENT J. 2024;32(1). doi:10.61172/ndj.v32i1.277