Bump on gum behind molar
A bump behind a molar may be normal tissue, an erupting wisdom tooth, irritation, or infection, so symptoms guide assessment.
The short answer
A bump behind a molar may be normal anatomy, an erupting wisdom tooth, an irritated gum flap, or a swelling from infection; its appearance and symptoms determine the next step.
What is the direct answer?
What does this question mean?
The area can include the retromolar pad, the gum over a wisdom tooth, or tissue traumatised by biting. A pimple-like bump, pus, tenderness, bad taste, or fever can indicate drainage from an infected tooth or gum.
What can you do next?
Rinse after meals, brush the back area gently, and avoid squeezing, cutting, or repeatedly touching the bump. Note its size, colour, pain, bleeding, and any change in mouth opening.
When should you seek dental care?
Book a dental examination if the bump lasts, grows, bleeds, becomes painful, or is associated with fever, pus, or limited opening. Get emergency help for rapidly spreading swelling or breathing difficulty.
What should you ask the dentist?
Ask whether the bump is normal retromolar tissue, wisdom-tooth gum, trauma, or infection, and whether an X-ray, cleaning, drainage, or removal is needed.
Frequently asked questions
Can I manage this at home?
Rinse after meals, brush the back area gently, and avoid squeezing, cutting, or repeatedly touching the bump. Note its size, colour, pain, bleeding, and any change in mouth opening.
What will a dentist check?
Ask whether the bump is normal retromolar tissue, wisdom-tooth gum, trauma, or infection, and whether an X-ray, cleaning, drainage, or removal is needed.