My back left gum is swollen
Back-gum swelling can involve an erupting wisdom tooth, trapped food, gum inflammation, decay, or infection around a molar.
The short answer
Swelling at the back left gum may involve an erupting wisdom tooth, trapped food, gum inflammation, decay, or an infection around a molar.
What is the direct answer?
What does this question mean?
The location describes tissue behind or beside the back molars, where a partially erupted wisdom tooth can trap plaque beneath a gum flap. A cavity, cracked tooth, periodontal pocket, or abscess can also produce localized swelling.
What can you do next?
Rinse gently with warm water, brush the accessible surfaces, and clean between the molars without digging into the tissue. Avoid placing aspirin or concentrated chemicals on the gum; a dentist may need an examination, tooth tests, and dental imaging.
When should you seek dental care?
Seek prompt care for increasing pain, pus, fever, facial swelling, limited mouth opening, or difficulty swallowing. Do not wait if swelling approaches the throat or affects breathing.
What should you ask the dentist?
Ask whether the swelling is pericoronitis, a molar infection, or gum-pocket disease. Ask whether imaging is needed, whether the tooth can be cleaned or restored, and what treatment prevents recurrence.
Frequently asked questions
Can this symptom or treatment be diagnosed from the search phrase alone?
No. A dentist may need an examination, tooth tests, gum measurements, or dental imaging to identify the cause.
What should I do if it gets worse?
Contact a dental service promptly, especially when pain, swelling, fever, pus, persistent bleeding, or difficulty swallowing develops.