A tooth nerve infection, also known as pulpitis, occurs when bacteria invade the tooth's pulp, which contains nerves, blood vessels, and connective tissue. This infection is often caused by deep tooth decay, cracked teeth, repeated dental procedures, or gum disease. Common symptoms include severe toothache, sensitivity to hot or cold, swelling in the jaw, bad breath, and sometimes fever. If you experience any of these signs, it's essential to seek dental care immediately. A dentist will diagnose the infection through an examination and possibly X-rays. Treatment options typically include root canal therapy to remove the infected pulp, antibiotics to manage the infection, or in extreme cases, tooth extraction. Regular oral hygiene, routine dentist visits, wearing a mouthguard, and eating a balanced diet can help prevent tooth nerve infections. Prompt treatment is crucial to avoid complications like abscesses, tooth loss, or more severe infections. If you suspect a tooth nerve infection, consult your dentist as soon as possible to preserve your oral health and prevent further damage.