1, acute pulpitis. More common in patients with deep caries, bacteria enter the pulp cavity from the tooth cavity, causing congestion and inflammation of the tooth nerve. Toothache is often spontaneous, and the pain is aggravated at night, and the pain is more severe after cold and hot stimulation.
Pain also radiates to the face, temples and ears. When suffering from suppurative pulpitis, heat stimulation aggravates the pain of patients, while cold stimulation reduces or disappears the pain.
2. Acute periapical periodontitis. It is caused by acute pulpitis or trauma. The sick tooth is in constant pain, feeling floating and afraid to chew. Patients can correctly point out the diseased teeth, and knocking on the diseased teeth will cause pain. At this time, because the nerve of the diseased tooth is necrotic, there is no irritating pain.
3. Acute periodontitis. The nature of toothache is similar to acute periapical periodontitis. The affected teeth not only have chewing pain and floating feeling, but also have formed periodontal pockets and loose teeth. Repeated swelling, pain and bleeding may occur in gingival tissue.
4. Periodontal abscess. The further development of periodontal tissue inflammation can cause suppurative inflammation. The pain is severe when the abscess is formed, and there is a sense of fluctuation locally after the abscess is formed. After the formation of periodontal abscess, the pain can be obviously alleviated or relieved.
5, tooth allergies. It is usually caused by gingival atrophy, cervical dentin exposure and tooth defects. At this time, cold, hot, sweet, acid and other stimuli can cause pain, but the pain can disappear after the stimulation stops.
6, food impaction pain. Toothache can be caused by food impaction between teeth, which is called food impaction pain.
7. dry socket. It usually occurs 2~4 days after tooth extraction, which can cause spontaneous and persistent severe pain. During the examination, it can be found that the blood clot in the tooth extraction wound smells bad.
In addition, there are tumors such as gums and jaws and trigeminal neuralgia, which can also cause pain in the corresponding areas of ipsilateral teeth.