With spinal or general anaesthetics, or with serious operations, pilots should not fly until their doctor says it is safe to do so. It is difficult to generalize about local anaesthetics used in minor operations or dental work. Allergic reactions to these, if they occur, are early and by the time the anaesthetic has worn off the risk of side effects has passed. However, after extensive procedures (such as the removal of several wisdom teeth), common sense suggests waiting at least 24 hours before flying.
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