Why is there blood between my teeth
Blood between teeth often comes from inflamed interdental gum after plaque or trapped food, though decay, trauma, or infection can contribute.
The short answer
Blood appearing between two teeth usually comes from the interdental papilla, the small triangular gum filling that space. Plaque, calculus, an overhanging filling, food impaction, floss trauma, decay, or a periodontal pocket can make it bleed.
Why can the gum between teeth be difficult to clean?
The interdental gum is difficult to clean because contact points and root contours create a narrow space. Plaque can inflame the papilla, while a cavity or defective restoration can trap food and press on tissue.
How can you clean between bleeding teeth safely?
Use floss or an appropriately sized interdental brush gently against both tooth surfaces. Do not force a large brush through a tight contact, and do not ignore repeated bleeding.
When does bleeding between teeth need urgent care?
Seek dental care if the problem persists, recurs, or is joined by swelling, pus, fever, bad taste, severe pain, or a loose tooth. Facial swelling or difficulty breathing or swallowing needs urgent attention.
What should the dentist check when this area bleeds?
Ask what structure is affected, which examination or imaging is needed, what treatment addresses the cause, and which changes should prompt urgent review.
Frequently asked questions
Can this symptom have more than one cause?
Yes. An examination distinguishes surface irritation, inflammation, tooth disease, and problems in supporting tissues.
What will a dentist check?
The dentist examines the tissues and teeth, asks about timing and triggers, and uses probing, tests, or imaging when indicated.
Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.