Flesh next to the big teeth swollen up clinically mainly refers to gingival swelling, the difficulty is proliferative gingivitis, periodontal abscess, periapical abscess and so on caused by. l. Proliferative gingivitis: mostly caused by long-term local stimuli such as poor oral hygiene, mainly manifested as obvious redness and swelling of the gum tissue. 2. Periodontal abscess: gingivitis continues to develop into periodontitis, inflammation accumulates and may cause periodontal abscess, which may be manifested as swollen flesh next to the big teeth. 3. Periapical abscess: The abscess in the apical area of the alveolar bone gradually spreads and drains from the gums, causing the flesh next to the big teeth to swell up. There may be other reasons for the swelling of the flesh next to the big teeth, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.