Bad Breath · San Ramon
It is almost never about what you ate
Persistent bad breath is a symptom, not a hygiene failure. Mints treat the smell; we would rather treat the reason.
Who this is for
- Breath that returns within an hour of brushing
- A partner or family member has mentioned it
- A persistent bad taste rather than a smell
- You have been using mouthwash daily for months without it resolving
Where it actually comes from
In the large majority of cases, the source is inside the mouth, and it is bacteria producing volatile sulphur compounds as they break down proteins. Those bacteria live in three main places.
The back of the tongue is the most common by a distance — the surface there is deeply textured and holds a substantial bacterial coating that brushing your teeth does nothing about.
Periodontal pockets are next. Deep pockets are anaerobic, which is exactly the environment these bacteria prefer, and this is why persistent bad breath is one of the more reliable signs of untreated gum disease.
Then dry mouth, because without saliva flushing and buffering, everything above gets worse.
Why mouthwash usually fails
Most mouthwashes mask odor for an hour and are alcohol-based. Alcohol dries the mouth, and a dry mouth produces more of the compounds causing the smell in the first place.
So there is a genuine trap here: daily use of an alcohol mouthwash for bad breath can leave you slightly worse off than doing nothing, while feeling like you are addressing it. If you have been using one for months without resolution, that is worth knowing.
What does help is a tongue scraper — properly, at the back, once a day — and treating whatever the underlying cause turns out to be.
When it is not the mouth
Around one in ten cases originate elsewhere. Tonsil stones are a frequent culprit and are often missed. Chronic sinus drainage, reflux, poorly controlled diabetes, and some liver and kidney conditions all produce characteristic breath odors.
If we examine you and find healthy gums, a clean tongue, no decay and normal saliva, we will say so and suggest you see your physician rather than keep treating your mouth for something that is not coming from it.
What to expect
Here’s how the visit actually goes.
No surprises. That’s the whole idea.
01
An honest conversation
Nobody enjoys raising this. We will not make it awkward — it is a common, treatable complaint and we have heard it many times.
02
The examination
Gums charted, tongue examined, decay checked, saliva assessed, and a look at the tonsils.
03
The likely cause
Usually identifiable at that first appointment. We tell you which of the causes it looks like and how confident we are.
04
Treating it
Gum treatment, a specific tongue-cleaning routine, dry mouth management — whatever the actual cause turns out to be.
05
Reviewing
We check back. If what we treated was not the cause, that is worth knowing quickly rather than in a year.
Questions
Answered before you ask.
Is it just poor brushing?
Usually not, and that assumption is what stops people asking about it. Plenty of patients with excellent brushing have persistent bad breath because the cause is a periodontal pocket or the tongue surface, neither of which brushing teeth addresses.
How do I tell if I have it?
You largely cannot — you acclimatize to your own smell. Licking the back of your wrist, letting it dry and smelling it is a rough test. Asking someone you trust is more reliable and worth the awkwardness.
Do tongue scrapers actually work?
Yes, and better than a toothbrush for this. The evidence is reasonable and the effect is noticeable within days. The trick is getting far enough back — most people stop well short of where the coating actually is.
What about probiotics or special toothpastes?
Some show modest benefit in studies, none replace finding the cause. If a product helps alongside proper treatment, fine. As a substitute for treating gum disease, no.
In their words
Thirty years of families who stayed.
Every quote below is a patient's own, unedited, from our reviews.
“We LOVE LOVE LOVE Avalon Dental! Dr. B is the best dentist we’ve ever gone to”
Cassondra H. “Dr B. always does a great job and you don’t feel the work getting done”
Marie T. “The staff always make my experiences with them the best and most comfortable”
Rebecca C.