Under the electric diagnostics understand investigation of the reaction of excitable tissues on electric irritation. This method is widely used in the clinic of nervous diseases, affection of peripheral motor neuron. They have successfully used in dentistry for diseases of the face, sublingual, nerves and motor part of the trigeminal nerve.
At the same time with the application of electric current to study neuromuscular apparatus many authors have repeatedly tried to use electric irritation to skin research (surface) sensitivity. It was assumed that the electric diagnostics will allow to pinpoint the condition sensitivity than the investigation of its adequate stimuli. However, all attempts in this direction were not successful. One of the reasons of failure was the fact that there was not a single developed methods that would use electric current to explore at least one kind of sensitivity. The authors believed that the sensitive nerves peculiar to specific response to electrical stimulation, which is expressed in the emergence of a peculiar sensation. In this irritation they saw method for investigation of "sensitivity", while the latter is a function of the number of analyzers, each of which reacts differently to electrical stimulation. Depending on the area and the place of application of the electrode (in other words, depending on the number and kind of brought into excitement sensitive nerve fibers), from the current determining the degree of irritation occur complex sensitive effects. This was the reason for the nomination naive, but very popular in his time the theory of the existence of special electric feeling. There was even expressed the opinion about the existence of this species sensitivity of the individual conductors in the Central nervous system.
Further development of research works on the electric diagnostics of disorders of sensitivity followed the line of chronometrie. Many authors have tried to identify chronaki different receptors. The results were quite unexpected. For example, some authors have argued on the basis of chronometrie that there are receptors "toothache", receptors "clear superficial pain", "stupid deep pain", receptors for temperature sensations (without distinction between heat and cold sensitivity), and other Characteristic that passion franksinatra sensitivity again revived the left was already opinion on the feasibility study "sensitivity at all."
The failure of this work is particularly obvious in the light of modern electrophysiological data showed that cause electric shock directly irritation of receptors is not possible. Experience the feeling of irritation receptor shock caused in fact by irritation of the receptor, and the corresponding sensitive fibers, i.e. there is a picture, which is observed at the irritation of electrical shock, skin nerve: the impulse reaches the crust, where it is transformed into a feeling of projecting itself into the region of localization of the receptors.
All the above makes clear why the electric diagnostics of disorders of sensitivity has been completely left without being able to replace conventional methods of research with adequate stimuli. But if the latter is fully satisfied with the Clinician in the study of the sensitivity of the skin or mucous membranes of the mouth, this cannot be said about the teeth, anatomical structure which presents insurmountable difficulties for sensitivity studies with adequate stimuli. This applies particularly to tactile and pain sensitivity. Meanwhile, none of the clinic does not need so in an objective method of the study of pain sensitivity, as a clinic for diseases of the teeth, where pain syndrome plays a very important role in the diagnosis of some diseases.
However, while we do not have enough well-developed research methods tooth sensitivity, in our disposal there remains only one possibility: the study of elektrovozoremontnij sensitive nerve of the tooth in norm and pathology. If we know the reaction of healthy tooth, how does this reaction, depending on the nature, extent and localization of the pathological process,the survey elektrovozoremontnij will significantly expand our diagnostic capabilities.
Needless to say that without a solid knowledge of anatomy and physiology of the nervous system of the tooth it is impossible to speak about the correct study of elektrovozoremontnij, and cannot be called a proper evaluation of the resulting data.