Okoh, M. , OWOLABI, J.O. and EGBOR, P.E. 2024. 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 . Nigerian Dental Journal. 32, 1 (Mar. 2024). DOI:https://doi.org/10.61172/ndj.v32i1.277.