Department of Oral Medicine, Chonnam National University Dental Hospital, Gwangju, Korea.
J Oral Rehabil. 2012 Dec;39(12):931-40. doi: 10.1111/joor.12007. Epub 2012 Sep 19.
The aim of this study was to compare the effects of three cryotherapeutic modalities (ethyl chloride spraying, ice block rubbing and cold gel packing) on facial skin temperature. Thirty healthy volunteers (15 men, 15 women; mean age, 29·4 ± 3·2 years) participated in this study. Each of the three modalities was randomly applied to the skin over the right masseter muscle. The skin surface temperature was recorded at baseline and every 5 min for 60 min after the application of one of the three cryotherapeutic modalities. Immediately after application, cold gel packing demonstrated the greatest reduction in surface temperature (10·6 °C), followed by ethyl chloride spraying (4·3 °C) and ice block rubbing (3·7 °C) (P < 0·001). During the 60-min post-application period, ethyl chloride spraying and ice block rubbing produced similar skin surface temperature changes. The skin surface remained coldest for the longest period of time after cold gel packing. The median time for recovery of the baseline temperature after application of the cold gel pack was about three to four times longer than that for the other modalities (P < 0·001). Ethyl chloride spraying and ice block rubbing resulted in less reduction and faster recovery of skin surface temperature than did cold gel packing. In conclusion, ethyl chloride spraying and ice block rubbing had a limited cooling effect on the facial skin tissue and could not reduce the skin surface temperature enough for local analgesia. Moreover, the cooling effect of cold gel packing was remarkable, but not sufficient for local analgesia.
本研究旨在比较三种冷冻治疗方式（氯乙烷喷雾、冰块摩擦和冷凝胶包装）对面部皮肤温度的影响。30 名健康志愿者（15 名男性，15 名女性；平均年龄 29.4±3.2 岁）参与了这项研究。三种方式中的每一种都随机应用于右咬肌皮肤表面。在应用三种冷冻治疗方式之一后，立即记录皮肤表面温度，并在 60 分钟内每隔 5 分钟记录一次。应用后即刻，冷凝胶包装的表面温度下降最大（10.6°C），其次是氯乙烷喷雾（4.3°C）和冰块摩擦（3.7°C）（P<0.001）。在应用后 60 分钟内，氯乙烷喷雾和冰块摩擦产生相似的皮肤表面温度变化。冷凝胶包装后皮肤表面保持最冷的时间最长。应用冷凝胶包装后恢复基线温度的中位数时间比其他方式长约三到四倍（P<0.001）。氯乙烷喷雾和冰块摩擦导致的皮肤表面温度降低较少，恢复较快。综上所述，氯乙烷喷雾和冰块摩擦对面部皮肤组织的冷却效果有限，无法将皮肤表面温度降低到足够的局部镇痛水平。此外，冷凝胶包装的冷却效果显著，但不足以达到局部镇痛效果。
