Electrophysiologic Observations on the Effects of Capping Materials on the Pulp Nerve Fibers

¹ Department of Physiology, Tottori University School of Medicine, Yonago, Tottori, Japan

Electrophysiologic investigations were made on the effects of the application of the pulp capping materials on the cavity and on the mechanisms of the excitation of the pulp nerve. The following conclusions were made from these results: (1) It was suggested that the pulp capping materials evoked the excitation of the pulp nerve endings that are related with the odontoblast cell. (2) The effects of these agents increased in inverse proportion to the thickness of the dentin, whereas the effects of these materials altered its action power in direct proportion to the basic material. (3) The view that the neurofibril intimately associated with the odontoblast cell plays the role of the sensory end organ might have explained the results in the present and previous papers. (4) The suggestion was made that the considerations on the thickness of the dentin and on the selection of pulpal capping materials were important in dental treatment.