tooth sensitivity
Introduction
Introduction to dental allergy Dental allergy, medically known as allergic dentin or dentin hypersensitivity, is the teeth are stimulated by the outside, such as temperature (cold, hot), chemical sensitive teeth (acid, sweet) and mechanical action (friction or bite hard) The sore symptoms caused by the etc. are characterized by rapid onset, sharp pain, and short time. basic knowledge The proportion of sickness: 0.01% Susceptible people: people around 40 years old Mode of infection: non-infectious complication:
Cause
Causes of tooth allergy
The pathogenesis of tooth allergy is not fully understood, and there are currently three hypotheses.
1. Neurology believes that there are dental nerve endings in dentin, so the feeling can be transmitted into the pulp by the surface layer of dentin. However, from the observation of morphology and function, there is no consensus yet. Many scholars believe that only the part of the unmyelinated nerve in the odontoblast layer of the pulp enters the anterior layer of the pre-dentin and dentin, and the outer structure is not seen in the outer 2/3. Many experimental results do not support the view that "the response of nerves to various stimuli is direct." Potassium chloride, histamine, acetylcholine and the like do not cause pain in superficial dentin; local anesthetics acting on the surface of dentin do not alleviate the sensitivity of dentin.
2. The dentin fiber conduction theory holds that the protoplasmic cells of odontoblasts contain acetylcholine enzyme, which can cause nerve conduction and cause pain after being stimulated. Those who disagreed believed that experimentally interfering with human dental odontoblasts did not reduce dentin sensitivity, indicating that odontoblasts do not have sensory properties and may only play a passive role in dentin hypersensitivity.
3. The theory of liquid dynamics believes that the pain caused by air, hypertonic solution or temperature stimulation is caused by these stimuli moving the liquid in the dentinal tubules, mechanically agitating the contents of the pulp, and indirectly exciting the free nerves. The tip, the impulse, causes pain. The energy accompanying the movement of the liquid can be converted into an electrical signal by the receptor of the pulp. Approximately 25% of the dentin volume is occupied by free liquid, which is similar in composition and properties to other body fluids and communicates with the pulp tissue. The dentinal tubule is a capillary having a diameter of 0.8 to 2.5 m, and therefore, the effect of liquid dynamics depends on the permeability of the dentinal tubule or the condition of the dentin surface. Stimulations that cause the dentinal fluid to move outward are air drying, hypertonic solution, and cold stimulation. The stimulus for moving the dentin liquid inward is mechanical stimulation or heating. The initial dentin exposure is very sensitive, and then the sensitive natural relief is the result of mineral deposits in the dentinal tubules or the formation of prosthetic dentin in the pulp.
Prevention
Dental allergy prevention
To prevent dentin hypersensitivity, choose the right toothbrush for correct brushing, use the correct brushing method, avoid excessive force when brushing teeth; reduce the intake of acidic foods and beverages; do not brush your teeth immediately after eating acidic foods and beverages, one hour later Brush your teeth again. If you already have sensitive teeth, you can replace the normal toothpaste with professional anti-allergic toothpaste. It relieves sensitivity while meeting the daily oral cleansing effect. Moreover, the abrasive is good, the friction coefficient is low, and the sensitivity of the teeth is prevented from continuing to deteriorate. For example, after 4 to 8 weeks, there is no obvious effect, and the doctor should be consulted in time.
Complication
Tooth allergy complications Complication
In addition to causing toothache, there are generally no special complications.
Symptom
Symptoms of tooth allergy Common symptoms Teeth with cold and hot pain, teeth, nerve pain, chewing, gingival pain, tooth loosening and shedding
1. When the tooth is stimulated by cold, heat, acid, sweetness and mechanical action (friction, biting hard object), it will suddenly have a sore feeling, or flash over, or briefly, when the stimulus is removed, this kind of The soreness will disappear. When the doctor examines the teeth, the probe can also be used to detect sensitive points on the teeth.
2, in addition to wear, dental caries, acid erosion, tooth trauma, gingival recession of the elderly, exposed roots and other reasons, can also lead to tooth allergies.
Examine
Dental allergy check
1, pulp temperature test (cold fever diagnosis).
2, oral examination.
Diagnosis
Diagnosis of dental allergy
Diagnosis can be based on clinical manifestations.
