Swelling of the gingiva is associated with the most distal tooth; fever and exudate may be present.

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Pericoronitis is inflammation of the gingiva around a partially erupted tooth. It commonly affects the most distal tooth in the oral cavity and can cause swelling, pain, fever, and sometimes pus. Acute herpetic gingivostomatitis is characterized by painful ulcers on the gums and oral mucosa, but not necessarily swelling of the gums. NUG (necrotizing ulcerative gingivitis) also presents with painful gingival ulcers and a grayish pseudomembrane, but may not be associated with a specific tooth. Periodontal abscess and endodontic abscess both involve infection and pus formation, but do not necessarily cause swelling of the gingiva specifically.

Swelling of the Gingiva Is Associated with the Most Distal