[Electron microscopic demonstration of mitochondria in odontoblastic processes in the rat molar dentin]

Under the electron microscope isolated mitochondria were found in the odontoblastic processes in the dentin up to the dentinoenamel junction. The larger number of mitochondria in the dentin third next to the pulp explains the finding by other authors of a localized activity of mitrochondrially bound enzymes in this part of the dentin.