Byers M R, Kish S J
J Dent Res. 1976 May-Jun;55(3):419-25. doi: 10.1177/00220345760550032001.
We have shown that there is extensive innervation of cusp pulp and dentin in rat molars. The dental nerves either end freely below the odontoblast layer or form gap junction endings on the odontobast cell body or along its dential process. The nerves are largely absent from response dentin, are found in contact with virtually all other odontoblasts at the tip of the cusps, are less frequent in intercuspal regions, and are absent from root dentin and odontoblast layers. The incisors were completely different from the molars, perhaps because they are continuously erupting teeth. The distribution of nerve endings in rat molars may be representative of that in teeth of other species, but the nerve endings should be mapped radioautographically for each type of tooth before generalizations can be made.
我们已经表明，大鼠磨牙的牙尖牙髓和牙本质有广泛的神经支配。牙神经要么在成牙本质细胞层下方自由终止，要么在成牙本质细胞体上或沿着其牙本质突形成缝隙连接末端。反应性牙本质中基本没有神经，在牙尖顶端几乎与所有其他成牙本质细胞接触，在牙尖间区域较少见，而在根牙本质和成牙本质细胞层中不存在。切牙与磨牙完全不同，可能是因为它们是不断萌出的牙齿。大鼠磨牙中神经末梢的分布可能代表其他物种牙齿中的分布情况，但在进行概括之前，每种类型的牙齿都应通过放射自显影法绘制神经末梢分布图。
