Symptoms · bad breath
What causes bad breath?
Most ongoing bad breath starts in the mouth, from bacteria in plaque, on the tongue, and around inflamed gums or decayed teeth. Dry mouth, smoking and some foods add to it. If brushing, cleaning between your teeth and your tongue doesn't fix it, book a check-up at Y3 Smiles Dental in Broadmeadows to find the cause.
When does bad breath need urgent attention?
Go to hospital or call 000
- A bad taste or smell with facial swelling that is spreading
- Swelling with trouble swallowing, breathing or opening your mouth, or a high fever
Call us today
- A bad taste with a swollen, painful gum or pus near a tooth
- Bad breath with a throbbing tooth
- A sore, smelly socket a few days after a tooth was removed
Book the next available time
- Ongoing bad breath without pain or swelling
- Bad breath with gums that bleed when you brush
Why does bad breath happen?
Bacteria in the mouth break down food particles and proteins and release sulphur compounds, which smell. Anything that gives bacteria more places to collect, or reduces saliva, tends to make breath worse. Common causes include:
- Plaque and food left between teeth and along the gum line.
- A coated tongue, especially towards the back.
- Gum disease, where bacteria collect in pockets around the teeth.
- Tooth decay or broken fillings that trap food.
- Dry mouth, from some medicines, breathing through your mouth, or not drinking enough water.
- Smoking, and strong foods like garlic and onion.
- Dentures that aren't cleaned well.
What can you do at home?
- Brush twice a day with fluoride toothpaste, including along the gum line.
- Clean between your teeth daily with floss or interdental brushes.
- Clean your tongue gently with your toothbrush or a tongue scraper.
- Drink water through the day, especially if your mouth feels dry.
- Clean dentures every day.
- If you smoke, quitting helps your breath and your gums.
How does a dentist find the cause?
At a check-up and clean at Y3 Smiles Dental, we look for gum disease, decay, food traps and infection, and check for dry mouth. A professional clean removes plaque and tartar that brushing can't reach. If gum disease is the cause, gum disease treatment usually makes a noticeable difference. If your mouth is healthy and bad breath continues, we'll suggest seeing your GP to look for other causes.
Other questions people ask
Does mouthwash cure bad breath?
Mouthwash can mask it for a short time, but it doesn't remove the cause. Cleaning plaque from your teeth, gums and tongue, and treating any gum disease or decay, is what makes a lasting difference.
Why is my breath worse in the morning?
Saliva flow drops while you sleep, so bacteria build up. Morning breath that goes away after brushing and breakfast is normal.
Can bad breath come from somewhere other than my mouth?
Sometimes. Sinus, throat and tonsil problems, reflux and some general health conditions can cause it. If your dentist finds your mouth is healthy, see your GP.
How can I tell if I have bad breath?
It's hard to judge your own breath. Asking someone you trust is often the most reliable way. A dentist can also look for the usual causes.
Can dentures cause bad breath?
Yes, if they are not cleaned well. Clean dentures daily, take them out overnight if advised, and keep your gums and tongue clean too.