Almost everyone has bad breath in the morning. When it lasts all day, however, it is usually a sign that something in the mouth needs attention. In about nine cases out of ten, the cause is in the mouth itself.
The most common causes
- Bacteria on the tongue, especially at the back.
- Plaque and food left between the teeth.
- Gum disease, which creates pockets where bacteria grow.
- Dry mouth, from breathing through the mouth, some medicines, or not drinking enough water.
- Smoking, coffee, garlic and onion.
- Less often, sinus, stomach or general health problems.
What you can do
- Brush twice a day and clean between your teeth every day.
- Clean your tongue gently with a tongue scraper or your toothbrush.
- Drink water during the day and chew sugar-free gum to stimulate saliva.
- Clean dentures, aligners and retainers every day.
- Mouthwash only covers the smell for a short time. It does not replace cleaning.
When to see the dentist
If bad breath does not improve after two weeks of good hygiene, book a visit. We check for tartar, gum disease, cavities and old fillings that can trap bacteria. A professional cleaning often makes an immediate difference.
The role of the tongue and saliva
Saliva cleans the mouth naturally. At night your mouth makes much less of it, which is why breath is stronger when you wake up. People who breathe through their mouth, talk a lot for work or follow very low-carb diets may also notice it more during the day.
The whitish coating on the back of the tongue is one of the main “reservoirs” of bacteria. Cleaning it every evening, from back to front, noticeably reduces the smell within a few days.
Myths about bad breath
- “Mouthwash is enough.” It masks the smell for an hour or two, but it does not remove the plaque that causes it.
- “It always comes from the stomach.” In the vast majority of cases the cause is in the mouth.
- “Chewing gum fixes it.” It helps you produce saliva, but it does not replace brushing and flossing.
- “If I can’t smell it, it isn’t there.” People get used to their own breath, so ask someone you trust for an honest opinion.
Frequently asked questions
Is bad breath contagious? No. It depends mainly on each person’s oral hygiene and oral health.
Can children have bad breath? Yes, often because of food debris, enlarged tonsils or mouth breathing. If it lasts, talk to your dentist or paediatrician.
How often do I need a professional cleaning? For most people every six months; more often if you have gum problems.
At Roma Dental Clinic
We find the cause and give you a simple, personal plan. If the cause is not in the mouth, we tell you which doctor to see. Read more about hygiene and prevention.