Bad Breath: The Dental Connection
Most bad breath starts in the mouth. Learn the common causes, from bacteria and dry mouth to gum disease, what helps, and when to see a dentist.
By the DentistDSS team · Published · Updated
Bad breath, medically known as halitosis, usually starts in the mouth. When food particles stay in the mouth, bacteria break them down and produce sulfur compounds that cause unpleasant odours.
Other causes include dry mouth, gum disease, tooth decay and infections. Smoking and certain foods, such as garlic or onions, can also contribute.
What helps
Brush twice a day with fluoride toothpaste, clean between your teeth every day, and gently clean your tongue. Drink water through the day, and chew sugar-free gum if your mouth feels dry. Mouthwash is an optional aid, best chosen with your dentist's advice; it does not replace cleaning or treating the cause.
When to see a dentist
If bad breath persists despite regular cleaning, book a dental appointment. Most causes are in the mouth and can be treated. If your dentist cannot find a dental cause, see your GP to check for causes such as medicine-related dry mouth, sinus or throat problems, or reflux.
Sources
- Halitosis, healthdirect Australia
- Bad breath, Queensland Government
- Bad breath, NHS
