Ogawa Yojiro, Misaki Toru
Department of Dental Anesthesiology, Nihon University of Dentistry, Tokyo 101-8310.
Masui. 2011 Mar;60(3):322-9.
Frequency of using nitrous oxide (N2O) in anesthetic field decreased recently by the influence of the environmental problems and the widespread use of intravenous agents. In dental treatment, however, inhalation sedation using low concentration of N2O has been effectively used to relax dental patients. Nitrous oxide inhalation sedation for dental treatment generally involves the use of a combination of low-dose N2O and high-dose oxygen. Low-dose N2O induces the relaxation of psychological tension in dental patients who have "dental phobia". Also, high-dose oxygen would contribute to manage "(pre) syncope" due to pain stimuli. Thus, N2O inhalation sedation is effective for the dental treatment, although the leak of N2O affects the health of dental staffs. The present review described the advantage and harmful effects of N2O in dental management.
近年来，由于环境问题以及静脉麻醉剂的广泛使用，麻醉领域中氧化亚氮（N₂O）的使用频率有所下降。然而，在牙科治疗中，低浓度N₂O吸入镇静已被有效用于使牙科患者放松。牙科治疗中的氧化亚氮吸入镇静通常涉及低剂量N₂O和高剂量氧气的联合使用。低剂量N₂O可使患有“牙科恐惧症”的牙科患者心理紧张得到缓解。此外，高剂量氧气有助于应对因疼痛刺激导致的“（预）晕厥”。因此，尽管N₂O泄漏会影响牙科工作人员的健康，但N₂O吸入镇静对牙科治疗是有效的。本综述阐述了N₂O在牙科治疗中的优点和有害影响。
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