What is the reason for the cold and hot soreness of teeth? How to solve it?

As the weather gets colder and colder, in recent years, there are many customers who are sensitive to cold water soreness. Cold, hot, sweet and sour teeth are called tooth allergy in dentistry. What is the main reason? How to prevent it? 1, Tooth decay, that is, dental caries. The outermost enamel of the tooth has no nerve endings, and the second layer is called dentin, so the customer has no feeling at the initial stage of tooth decay. Only when the tooth decay reaches the second layer of the tooth, that is, the dentin layer, will he feel cold, hot, sweet and sour, indicating that tooth decay has become more serious. The solution is to fill teeth in time, pay attention to oral hygiene and have regular oral examination. 2. The lack of wedge-shaped neck can also cause cold, hot and sore teeth. This kind of toothache is often caused by the "wedge" defect of the tooth neck caused by excessive brushing and long-term brushing with a horizontal brush. The solution is to repair the wedge-shaped defect in time, pay attention to the correct brushing method at ordinary times, change the "horizontal brushing method" to "vertical brushing method", and suggest using a soft toothbrush. 3, excessive tooth wear, especially some customers with "night bruxism", because of excessive tooth wear completely polished the outer layer of enamel, so that the nerve endings of teeth are exposed to the mouth, and they will be sore when they encounter hot and cold sweetness. The solution is desensitization or treatment of pulp diseases, eating less hard food at ordinary times, correcting bad tooth habits and grinding teeth at night. 4, tooth trauma, including tooth occlusion, due to tooth enamel cracking, dentin will be sore when it is cold, hot and sweet. Solutions include tooth desensitization treatment, tooth nerve removal and tooth protection crown. 5. Periodontal atrophy and root exposure can also lead to tooth allergy. The preventive methods are usually to pay more attention to oral hygiene, brush your teeth correctly and clean your teeth regularly. Once the above symptoms appear, they are often solved by desensitization treatment, endodontic treatment and crown protection.