Reduce swelling inside mouth

Mouth swelling may come from trauma, a blocked gland, gum disease, or dental infection; relief depends on its cause.

Swelling is fluid and immune-cell buildup in oral tissue. A lump beside a tooth differs from swelling under the tongue, inside the cheek, or near a salivary-gland opening, so location and onset guide diagnosis.

Rinse gently with salt water if it is comfortable, drink water, avoid heat and irritating foods, and use a cold pack outside the cheek. Do not lance the area or place caustic substances on it; a clinician may examine the tooth, gum, salivary duct, or soft tissue.

Get prompt dental assessment when swelling lasts, grows, recurs, or is painful. Fever, facial or neck spread, difficulty breathing or swallowing, drooling, or inability to open the mouth needs emergency care.

Ask where the swelling originates, whether imaging or drainage is needed, and which treatment addresses the source instead of only reducing the visible lump.