Mouth bleeding while brushing teeth

Bleeding while brushing commonly reflects inflamed gum tissue, but persistent bleeding needs an examination.

Gums bleed when plaque irritates the gingival margin, when brushing is forceful, or when gum tissue is injured. Less common causes include infection, medication effects, or a blood disorder.

Use a soft brush with fluoride toothpaste, angle it toward the gumline, clean between teeth gently, and do not stop cleaning because of light bleeding. Arrange a professional assessment if it continues.

Seek care for spontaneous bleeding, marked swelling, pus, loose teeth, fever, mouth ulcers, or bleeding that is difficult to stop. Facial swelling affecting breathing or swallowing is an emergency.

Ask whether you have gingivitis or periodontitis, whether a professional cleaning is needed, and how brushing, interdental cleaning, medicines, or medical conditions affect the bleeding.