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One hundred and thirty-six patients attending for local anaesthetic procedures in the trigeminal area were assigned to four groups. Each group was injected with the anaesthetic solution at temperatures 10°C, 18°C, 37°C and 42°C, respectively. Measurement of pain during injection was made on a numeric scale. The results show a strong relationship between the temperature of the anaesthetic solution and the pain of the injection (p ≪ 0.001). This demonstrates that warning the anaesthetic solution significantly reduces the pain felt by the patient during injection, especially at 42°C.
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Accepted: June 24, 1992
Received: February 18, 1992
© 1993 The British Association of Plastic Surgeons. Published by Elsevier Inc.