Swelling in lower gums
Lower-gum swelling can come from trapped plaque, gum infection, trauma, or a tooth-root problem and needs cause-based care.
The short answer
Swelling in the lower gums is usually caused by irritated gum tissue, a local gum infection, trauma, or infection around a tooth root, so the cause must be examined before treatment.

What is the direct answer?
What does this question mean?
The lower gums include the gingiva around the front teeth, premolars, and molars. A lump, puffiness, redness, tenderness, or drainage may arise between teeth, beside a tooth, or over a root.
What can you do next?
Brush gently along the gumline with fluoride toothpaste, clean between the affected teeth with floss or an interdental brush, and rinse with warm salt water. Do not puncture the swelling or place aspirin on the gum.
When should you seek dental care?
Arrange a dental examination promptly if swelling persists, returns, bleeds easily, produces pus, or is linked with tooth pain. Seek urgent care for facial swelling, fever, trouble swallowing, or difficulty breathing.
What should you ask the dentist?
Ask whether the swelling is from gingivitis, a periodontal pocket, food impaction, a damaged tooth, or an abscess. Ask whether probing, dental radiographs, cleaning, drainage, or root canal treatment is needed.
Frequently asked questions
Can food stuck between teeth cause a swollen gum?
Yes. A trapped food fibre or hard fragment can irritate the interdental papilla until it is removed and the area heals.
Does a gum lump always mean an abscess?
No. It may be irritation or inflammation, but pus, throbbing pain, or a draining point needs assessment for infection.
