Does gingivitis cause bad breath? Question
Yes. Bad breath that lasts after brushing is a symptom of gingivitis and of periodontitis. The bacteria in plaque and tartar along and under the gumline cause the infection. Brushing cannot reach tartar below the gumline, so lasting bad breath with bleeding or swollen gums is a reason to see a dentist.

What to know
- Other gingivitis symptoms are bleeding, red or swollen gums and tenderness when chewing.
- A professional cleaning removes tartar that brushing cannot.
- An antimicrobial mouthwash can help, but it does not replace brushing and flossing.
Sources
Gum disease and symptoms Read next
Can gum disease cause tooth loss?Yes. Periodontitis destroys the ligament and bone that hold teeth, and the CDC lists it as a leading cause of tooth loss.
What are the warning signs of gum disease?The warning signs of gum disease are red, swollen, tender or bleeding gums, gums pulling away from the teeth, loose or sensitive teeth, pain when chewing, and bad breath that does not go away.
What does stage 1 gum disease look like?Stage 1 gum disease is gingivitis, and it looks like red, swollen gums that bleed easily, often when you brush.
When should I be worried about bleeding gums?See a dentist or primary care physician if your gums bleed for two weeks or more.
What causes receding gums?Receding gums are caused by brushing too hard, plaque and tartar buildup, gum disease, injury to the gums, misaligned teeth, smoking or chewing tobacco, and lip or tongue piercings.
What is a periodontal abscess?A periodontal abscess is a pocket of pus-filled infection that starts in the gums.