Pöllmann L
Rev Stomatol Chir Maxillofac. 1981;82(3):201-3.
A maximum of the pain sensibility of the teeth is found during the night. Simultaneous observations of epicritic and nociceptive functions reveal an opposite circadian cycle. During the day-time an analgesic agent effects in the teeth a quicker and longer elevation of the pain threshold than in the night-hours. During the day a placebo results in a greater and more rapid increase of the pain threshold in teeth than during the night.
牙齿的疼痛敏感性在夜间达到最高。对精细感觉和伤害感受功能的同步观察显示出相反的昼夜节律。在白天,一种止痛剂在牙齿上产生的疼痛阈值升高比夜间更快、更持久。在白天,安慰剂导致牙齿疼痛阈值的升高比夜间更大、更迅速。