Masuda swelling
Back-mouth swelling can involve a wisdom-tooth gum flap, a tooth-root infection, or nearby soft tissue.
The short answer
A swelling near the back of the mouth may involve a wisdom-tooth gum flap, a tooth-root infection, salivary tissue, or another soft-tissue condition.
What is the direct answer?
What does this question mean?
A partially erupted third molar can have an operculum that traps food and bacteria. Swelling beside another tooth may arise when pulpal inflammation spreads through the root.
What can you do next?
Clean gently, rinse with warm salt water, avoid squeezing the lump, and use pain medicine only as directed for you.
When should you seek dental care?
Seek urgent dental care for fever, pus, increasing swelling, facial asymmetry, or limited opening; get emergency help for breathing or swallowing difficulty.
What should you ask the dentist?
Ask whether the cause is a wisdom tooth, gum, salivary tissue, or root, and whether examination or radiography is needed.
Frequently asked questions
Can I pop the lump?
No, squeezing or puncturing can injure tissue and spread contamination.
What is the main next step?
Clean gently, rinse with warm salt water, avoid squeezing the lump, and use pain medicine only as directed for you.