Syndromes, disorders of sensitivity in the clinic dental diseases

There are objective and subjective discomfort. Refer to the subjective pain and paresthesia (under imply occurs in the absence of an external stimulus, feelings of numbness, crawling, cold, heat, stress, skin, etc).
Objective disorder sensitivity is manifested in the following forms: 1) anesthesia - complete loss of sensitivity; 2) hypoesthesia - lowering sensitivity; 3) giperstesia - increased sensitivity (we are talking about lowering the threshold; this form of violation of sensitivity is extremely rare, for example, in the administration of strychnine; many authors deny this form of sensitivity disorders); the hyperesthesia very often confused with hyperpathia, which in the dental clinic often have to meet; 4) hyperpathia - a kind of violation of the perception of stimuli, in which feelings are extremely nasty sensual tone.
Among the diverse sensations that arise in the crust at the irritation of different receptors, pain, as mentioned, has a special place and in terms of their biological value, and for those suffering that it causes.
Painful sensations are characterized by great diversity. Qualitative distinguish shades of pain sharp, dull, piercing, cutting, smerlada, pulsating and others With various aches we face and diseases of the teeth.
Pain can occur without the influence of any external stimuli (spontaneous) detected or when causing irritation (reactive). Pains are paroxysmal or kept for a long time without light intervals.
Pain may be felt in the place of a pathological focus or away from him. On this basis distinguish local, projection, radiating and reflex pain. Local called pain, localization of pathological process. This type of pain most often during periodontitis.
Pain may also occur due to a shift irritation with one branch nerve to another - radiating pain. The process of irradiation occurs in the ganglia, where the cells corresponding to the individual branches are located in close anatomical and physiological contact.
Pain occur not only at the irritation of the receptors, but also other departments of the analyzer. However, these pains are projected in the area of sensitive nerves in the periphery. Such pain is called projection. For example, when the disease nizhnelenskoe nerve pain can be in all lower teeth of the party concerned. With the flat pains have to deal with diseases of the maxillary sinus or after radical surgery on her when are involved in pathological process upper alveolar nerves. Projection of pain in the teeth can occur not only with the defeat of the branches of the trigeminal nerve, but his sensitive cores and Central routes, up to the relevant Department of the cerebral cortex. Of course, that all attempts to find in these cases, the "guilty" tooth, Traunreut or delete it, of course, does not lead to the desired effect.
If pain is outside the branching of one nerve and goes to another nerve, it is called a reflex or the reflected pain. So, diseases of the teeth pain may be given in the neck or arm of the party concerned. The mechanism of pain in these cases is quite clear. The core of the downward beam trigeminal nerve comes to the second cervical segment; the cells of this kernel in contact with the cells back horns appropriate cervical segments, which in turn are anatomical and physiological connection with the cells back horns underlying the cervical segments of the spinal cord, nerve related that provide sensitive fibers neck and hands.
Reflex and are a pain in the teeth resulting in diseases of the internal organs. Pain in the teeth for angina first described by representatives of the clinic of internal diseases. Described and pain in the teeth for diseases of the stomach. The origin of the pain is as follows. Part of the sensory fibers running from the internal organs as part of the vagus nerve ends in the nucleus tractus beam down in the cervical part of spinal cord at level III, IV and V of the cervical segments, where over and fiber phrenic nerve; here they both come in contact with the cells kernel downward root of the trigeminal nerve. Diseases of internal organs irritation, spreading over vagal afferent fibers and phrenic nerves can irrationality on the cells of the kernel of the trigeminal nerve and projected on innervated their territory, including on the teeth.
Toothaches "nazebnego of origin" is not an uncommon phenomenon. They only rarely diagnosed. Most often, they give rise to incorrect diagnosis and, consequently, ineffective therapy. The correct diagnosis in these cases, entirely depends on the ability to correctly determine the state of the tooth nerve.