Method of investigation of elektrovozoremontnij teeth

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The study of elektrovozoremontnij teeth make as follows.
To the terminal of the device indicated by the sign "plus", attach the passive electrode (lead plate sized 100 to 150 cm2), which is placed on top of hydrophilic strip (its sizes are several more of the size of the electrode), moistened with warm tap water. Electrode with seal is fixed with the help of the bandage on the hand or forearm. As the passive electrode, you can use a metal cylinder (wrapped moistened gauze), which the patient holds in his hand. To the terminal marked with the sign "minus", attach an active electrode, which is a fine stainless steel wires with a diameter of 0.5-0.6 mm, fixed on the handle of an insulating material. Before each study strip and active electrode is sterilized by boiling, elektrodvigatel carefully wipe alcohol or bleach and dried wool. The tip of the active electrode wrap a thin layer of cotton wool wetted tap water. It is placed on the sensitive point of the tooth.
In carious teeth, along with the usual sensitive points should also explore the anxiety from the bottom of the cavity, which previously necessary, to the extent possible, to remove the softened dentin, and the cavity is good to dry. With deep cavities, when removal loosened dentin threatens opening of the tooth cavity, a study conducted with a partially processed bottom, given that the obtained data are not accurate. A study of dentin is dry metal electrode (the tip does not cover moistened cotton wool). Anxiety is defined with 3-4 points, and guided by the minimum current.
In the study of indigenous teeth with large fillings on the chewing surfaces or when the resistance in the field of sensitive point is very large and received at the maximum voltage is not enough to get a reaction, a study should be carried out with fillings, fissures (and in front teeth-lingual surface above the tubercle). The results obtained though inaccurate, but can give an idea about the state of the pulp. Where it is possible to conduct a study with the mouths of root canals, it is necessary to do to get a clear picture about the state of the root pulp.
The patient before the study should be warned that at the first appearance of any sensations in the tooth, he should tell the doctor about it (to make the sound "a"). If the pulp is not completely died (and there is even only in the apex of the root), irritation of the current causes a feeling of pain. In deponirovano tooth current irritates the periodontium and causes tactile sensation, feeling a little push. The same feeling occurs when neuritis alveolar nerves and after anesthesia.
In those (usually very rare) cases when a patient is not well versed in their feelings, should cause irritation to any healthy tooth. This allows such a patient better understand the sensations that can occur in a sick tooth. If in doubt, you should always ask the patient what he feels. Usually, as a rule, patients are well versed and accurately understand my feelings. Never, however, should not be limited to only one threshold of irritation. Having received the affirmative answer, it should slightly increase the current and to check whether feels something sick. After ensuring that it responds to the damage of irritation, it is necessary, reducing the current strength again to check the threshold.
While the study of adults and children older than 6 years are usually does not present any difficulties and is associated with minimal time, the definition of anxiety in children younger than 6 years is associated with a risk of serious errors. That is why to study it is necessary to resort to the extreme, and to the obtained data be treated with caution.
A study carried out preferably in a separate room, where nothing could distract the attention of the patient, which should be given the opportunity to absorb first impression arising in the tooth at the irritation of his current minimum (threshold) forces.
As a patient, and the doctor must be well insulated from the earth, which floor, at least in the place where the research is carried out should be covered with carpet or linoleum. To avoid errors related to the leakage current, the doctor it is necessary to work in rubber gloves. Instead of metal dental mirror, use a plastic spatula.
The chair on which sits the patient, shall be fitted with a head restraint; the mouth - well-lit. Subject to study teeth must be completely free from plaque, Tartar (at least in the area of the investigated points) and well dried up, which is lined with cotton rolls and dried, rubbing little cotton balls in the direction of the cutting edge (chewing surface) to the neck.