Why Teeth Get Darker in the First Place
Before choosing a whitening treatment, it helps to know what you’re actually trying to remove. There are two different problems, and they don’t respond the same way.
Surface staining (extrinsic) sits on the outside of the enamel. It builds up from what passes over your teeth every day — coffee, Nescafé, tea, red wine, dark soft drinks, tobacco. This is the type that responds best and fastest to whitening.
Internal discolouration (intrinsic) comes from within the tooth. It can be the natural shade you were born with, changes that come with age as enamel thins, certain medications, or a tooth that has darkened after trauma or root canal treatment. This type is more stubborn, and sometimes whitening isn’t the right answer for it at all — a single dark tooth, for example, usually needs a different approach.
Part of what I do at the consultation is work out which one you have. It’s the difference between a realistic result and a disappointing one.
The Two Main Treatments
In-clinic laser whitening. Done here, in one session. A stronger gel is applied under controlled conditions and activated with light. The advantage is speed and supervision — your gums are protected and I can see exactly what’s happening. This is the option for a visible change in a short time.
Custom home trays (gouttière). I take an impression and make trays moulded to your teeth, and you use a lower-concentration gel at home over a period of days. It works more gradually, and because the trays are yours, you keep them — which matters more than most people realise.
In practice, the best results usually come from both. The clinic session does the heavy lifting; the trays maintain it. That combination is what I use for my own teeth: laser every three to four months, with trays at home in between.
I mention that not as a sales point but because patients ask me constantly what I use myself.
The Part Most People Don’t Expect
Whitening is not permanent, and it isn’t one-and-done.
This is the single biggest misunderstanding I deal with. Patients come in expecting one session that fixes their teeth for life. That isn’t how it works — for anyone, at any clinic, with any technique.
Your teeth are exposed to staining every single day. Whatever shade we achieve, it will gradually drift back unless it’s maintained. That isn’t a failure of the treatment; it’s just what teeth do.
Once you understand this, whitening becomes much more satisfying, because you stop waiting for it to fail and start maintaining it instead. That’s exactly what the home trays are for.
Protecting the Result
- Be aware of what stains. Coffee, Nescafé, tea, red wine and dark sodas are the usual causes. You don’t have to give them up — just know they’re the reason.
- Use a straw for cold drinks. It genuinely reduces contact with the front teeth. For hot drinks, use a glass or metal straw rather than plastic.
- Rinse with water after anything staining, if you can’t brush.
- Don’t brush immediately after acidic drinks — wait about half an hour, or you’ll brush softened enamel.
- Keep your cleanings. A professional cleaning removes the surface build-up that makes teeth look dull in the first place. Some patients are surprised how much brighter their teeth look after a cleaning alone.
Is It Safe? Will It Hurt?
Sensitivity during and shortly after whitening is common and usually temporary. It settles within a few days. If you already have sensitive teeth, tell me beforehand — there are ways to manage it.
What matters more is that whitening is done on healthy teeth and gums. If there’s decay, an untreated crack, or gum inflammation, that gets addressed first. Whitening over an existing problem doesn’t hide it; it usually makes it hurt.
Also worth knowing: whitening doesn’t change the colour of crowns, veneers or fillings. If you have existing work on your front teeth, we plan the shade around it — and if you’re weighing whitening against veneers, read my article on choosing a natural smile over a “Hollywood smile”.
Learn more on our teeth whitening service page, or come in and we’ll look at your teeth together.
Book a consultation at Camellia Polyclinic, Michel Zakhour St., Beirut — call or WhatsApp +961 71 567 894.