Twelve ways to get a brighter smile (most of them are not whitening)
Teeth dull for two different reasons, and only one of them responds to whitening. Working out which one you have decides whether you need a treatment or a habit.
Before any of the twelve, one distinction that decides which of them apply to you.
Teeth look duller for three different reasons, and they need different answers.
Surface staining sits on the outside of the enamel. Coffee, tea, red wine, dark sauces and smoking. This comes off with a clean.
Deeper colour is built into the tooth, from age or certain medications. Cleaning does nothing to it. Whitening is what works here.
Thinning enamel makes teeth look yellower without any staining at all, because enamel is slightly translucent and the layer beneath it is darker. As enamel wears, more of that shows through. This one is erosion, and whitening is the wrong answer for it.
Most people assume they have the second and quite often have the first or third.
The habits
1. Brush properly, twice a day. Two minutes, soft brush, angled into the gum line, small circles. This does not whiten teeth. It stops new stain settling in, which preserves the shade you have.
2. Do not brush harder. Abrasion wears enamel, and thinner enamel looks yellower. Scrubbing to get whiter teeth achieves the opposite over a few years.
3. Floss or use interdental brushes daily. Stain and plaque collect between teeth, and shadowing there makes the whole smile read as duller.
4. Rinse with water after staining drinks. Coffee, tea, red wine. A mouthful of water afterwards is genuinely effective and costs nothing.
5. Use a straw for cold dark drinks. Iced coffee, cola, juice. Less contact with the front teeth.
6. Do not sip. A coffee nursed for an hour gives stain an hour to settle in, and if the drink is acidic it is softening enamel the whole time too.
7. Wait an hour before brushing after anything acidic. Wine, juice, citrus, soft drink. Acid softens enamel temporarily and brushing it then wears it away, which makes teeth look yellower. Rinse at the time, brush later.
8. Eat crunchy fruit and vegetables. Apples, pears, celery, carrots. They prompt saliva and gently clean surfaces as you chew. A useful habit rather than a miracle.
9. Stay hydrated. A dry mouth stains more and decays more, because saliva is what washes acid and pigment away. If your mouth is often dry, mention it, since it is frequently a medication side effect.
10. Do not smoke. Tar stains teeth quickly and deeply, and it is the fastest way to undo whitening. It also causes gum disease while suppressing the bleeding that would warn you about it.
The treatments
11. Have a professional clean before you consider whitening.
This is the most underrated item here. A scale and clean removes hardened build-up and a good deal of surface staining, and the result surprises people often enough that some decide they are done.
It is also a prerequisite. Whitening gel cannot get through a layer of plaque and tartar, so whitening an unclean mouth produces a patchy result.
A full check-up and clean is a fixed $249, covering the exam, the scale and clean, fluoride and any bitewing x-rays you need.
12. Professional whitening, if the colour is in the tooth.
If your teeth are clean and still darker than you want, that is what whitening is for.
Our in-chair whitening is a fixed $399 against a $599 value, and it includes take-home trays so you can top up rather than starting over later.
Two things to know before you book. Whitening works on natural enamel and does nothing to crowns, veneers or white fillings, so if you have visible work at the front, the sequence needs planning. And we check first, because gel reaching an untreated cavity or exposed root surface is genuinely painful.
What about whitening toothpaste
It works on surface stain only, and it does so by being mildly abrasive rather than by bleaching. It cannot change the underlying colour of a tooth.
That makes it a reasonable maintenance product and a poor treatment. And used aggressively over years, the abrasion thins enamel, which makes teeth look yellower. It is one of the few products on this list that can quietly work against you.
Charcoal pastes are the same story with a stronger version of the same problem.
The realistic expectation
Nobody's natural teeth are pure white, and teeth that are look obviously artificial. Enamel is slightly translucent and varies from person to person, and the canines are naturally a shade darker than the front teeth.
The aim worth having is your teeth looking clean, healthy and a bit brighter. That is achievable and it looks like you. Uniform brilliant white generally does not.
Read more: Whitening kits vs professional whitening: what you actually get
Cosmetic dentistry FAQ
What causes teeth to become yellow?
Three separate things. Surface staining from coffee, tea, red wine, dark sauces and smoking, which sits on the enamel. Deeper colour built into the tooth from age or certain medications. And enamel thinning from erosion, which lets the naturally darker layer underneath show through. They look similar and need different answers.
Does whitening toothpaste work?
Only on surface stain, and modestly. It works by being mildly abrasive rather than by bleaching, so it can polish stain off but cannot change the underlying colour of the tooth. Using an abrasive paste aggressively over years can also wear enamel, which makes teeth look yellower, so it can quietly work against you.
Is professional whitening safe?
At the concentrations dentists supply and with the gums properly isolated, it is not expected to damage enamel. The usual side effect is temporary sensitivity to cold that settles within a few days. Problems come from misuse: too strong, worn too long, or gel sitting on gums because the tray does not fit.
Can brushing alone whiten teeth?
It can keep new stain from settling in, which preserves the shade you have. It cannot lift colour that is already in the tooth. If your teeth have gradually darkened over years, brushing more will not reverse it, and brushing harder will make things worse by wearing enamel.
How often should I have a professional clean?
Six months suits most people. If you drink a lot of coffee or red wine, or you smoke, more often may keep the staining under control better. A clean removes far more surface staining than people expect, and it is worth trying before assuming you need whitening.
