Almost everyone has bad breath sometimes, especially in the morning or after a meal heavy with onion and garlic. Breath that stays bad even after brushing, though, is called halitosis, and it is usually a sign that something in the mouth needs attention.
The short answer
In most people, persistent bad breath comes from bacteria in the mouth, mainly on the back of the tongue, between the teeth and under inflamed gums. Cleaning your tongue, flossing daily, drinking enough water and getting a professional cleaning fix most cases. If your breath is still bad after that, see a dentist to check for gum disease, a decayed tooth or a dry mouth, and then a doctor if the mouth is healthy.
Where bad breath comes from
- The tongue: a white or yellow coating at the back of the tongue holds a lot of odour-causing bacteria.
- Food trapped between teeth that brushing misses.
- Gum disease: bacteria in deep gum pockets give off a strong smell. Gums that bleed are a warning sign.
- Decayed teeth, broken fillings and a partly erupted wisdom tooth, which trap food and bacteria.
- Dry mouth from mouth breathing, snoring, low water intake, fasting or some medicines. Saliva naturally washes bacteria away.
- Tobacco, paan and gutka, which cause their own odour and damage the gums.
- Dentures or aligners that aren't cleaned every day.
Less often, the cause lies outside the mouth: sinus infections, tonsil stones, acid reflux, or medical conditions such as uncontrolled diabetes. A doctor can check for these if the mouth is healthy.
How to tell if your breath is bad
It's hard to smell your own breath. Try licking the inside of your wrist, letting it dry for a few seconds and smelling it, or scraping the back of your tongue with a spoon. Better still, ask someone you trust.
What actually helps
- Clean your tongue every day with a tongue cleaner, from back to front. This alone makes a big difference for many people.
- Floss or use interdental brushes once a day.
- Drink water through the day, especially during fasts, long meetings and air-conditioned days.
- Chew sugar-free gum or eat crunchy vegetables to keep saliva flowing.
- Choose an alcohol-free mouthwash. Alcohol-based ones can dry the mouth. Mouthwash masks odour for a short time; it doesn't replace cleaning.
- Stop tobacco in any form.
- Clean dentures, retainers and aligners daily, and take dentures out at night.
What a dentist will check
At a check-up we look for gum pockets, hidden decay, leaking fillings, food traps and partly erupted wisdom teeth. A professional scaling and polishing removes the tartar that bacteria live in. If gum disease is found, treating it usually clears the breath too. Read more about our general dentistry services.
Frequently asked questions
Why is my breath bad even though I brush twice a day?
Brushing alone misses the tongue and the spaces between teeth, where most odour comes from. Add tongue cleaning and flossing. If it still persists, there may be gum disease or a problem tooth.
Is bad breath a sign of gum disease?
It can be. Bad breath together with bleeding or puffy gums is a common early sign. Our guide to bleeding gums explains what to look for.
Can a wisdom tooth cause bad breath?
Yes. A partly erupted wisdom tooth can trap food under the gum flap. See wisdom tooth pain: does it always need removal?
Does mouthwash cure bad breath?
No. It freshens breath for an hour or two, but the smell returns unless the cause is cleaned away.
Book a consultation in GK-1
If bad breath is affecting your confidence, a check-up and cleaning is the quickest way to find the cause. Ark Dental Global is at R-27, 1st Floor, Greater Kailash-1, New Delhi 110048, a short drive from GK-2, CR Park, Kalkaji, Lajpat Nagar and Saket. We are open Monday to Saturday, 10 AM to 8 PM. Call or WhatsApp +91 99905 09300, or book online.
