Pericoronitis is an inflammation of the gum tissue surrounding a partially erupted tooth, most commonly a wisdom tooth. It occurs when food debris and bacteria become trapped under the gum flap covering the tooth, leading to infection. Symptoms range from mild discomfort and bad breath to severe pain, swelling, difficulty opening the mouth, and fever. It can be acute or chronic and may spread if untreated. Risk factors include poor oral hygiene, stress, and impacted teeth. Treatment typically involves cleaning, antibiotics, and sometimes removal of the affected tooth. Prompt dental care is essential to prevent complications