Sore gum behind back tooth
Soreness behind a back tooth may be caused by trapped food, gum inflammation, a partially erupted wisdom tooth, trauma, or infection around the tooth.
What is the direct answer?
Soreness behind a back tooth may be caused by trapped food, gum inflammation, a partially erupted wisdom tooth, trauma, or infection around the tooth.
What does this question mean?
The tissue behind the last molar is a common place for a partially erupted wisdom tooth to trap plaque beneath a gum flap. A sharp opposing tooth, cheek bite, ulcer, decay, or periodontal pocket can create similar soreness, so the tooth and surrounding tissue need inspection.
What can you do next?
Rinse gently with warm salt water, brush the area with a small soft brush, and remove trapped food without forcing objects under the gum. Use a suitable label-directed pain reliever if appropriate for you and avoid chewing hard foods on that side.
When should you seek dental care?
Arrange prompt care if pain persists, recurs, or comes with bad taste, pus, fever, swelling, limited mouth opening, or difficulty swallowing. Breathing difficulty or rapidly spreading swelling is an emergency.
What should you ask the dentist?
Ask whether a wisdom tooth, gum flap, pocket, ulcer, decay, or bite injury is responsible, whether an X-ray is needed, and how recurrence can be prevented.
Frequently asked questions
Can this problem have more than one cause?
Yes. An examination distinguishes tooth, gum, bite, medication, and general-health causes that can look similar.
What will the dentist check?
The dentist will inspect the area, test nearby teeth and gums, and use imaging or other tests when the findings require them.