Multiple doses of paracetamol plus codeine taken immediately after oral surgery

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Abstract
A double-blind randomized analgesic trial was carried out in 180 patients undergoing surgical removal of an impacted lower wisdom tooth. The patients received the first dose of either paracetamol 1000 mg plus codeine 60 mg, paracetamol 500 mg plus codeine 30 mg or placebo immediately after surgery during the effect of the local anaesthetic. The mean pain intensity, the duration of effect and the number of patients needing additional analgesics were all significantly dose related. In the evaluation procedure a pain intensity index was defined which took into account both the efficacy and the duration of effect. In addition, the analgesic efficacy was calculated over a 12 hour period after first medication and thereby including the efficacy of a second dose, if taken. Paracetamol 1000 mg plus codeine 60 mg followed by paracetamol 500 mg plus codeine 30 mg after around 5 hours was a very effective treatment and over 40% of these patients did not need any further pain relief during the evaluation period. In conclusion, an effective analgesic taken immediately after oral surgery reduces the total pain and diminishes the need of analgesics.