Teeth whitening: is it safe and how long does it last?
In short: Teeth whitening done in the clinic by a professional is safe and does not damage the enamel; at most it causes some passing sensitivity. The result usually lasts between one and three years depending on your habits. The price you will see here is a rough market figure; the firm quote is given at the free first visit.
Is it safe to whiten your teeth?
Yes, as long as a dentist does it or supervises it. Professional whitening uses peroxide gels in controlled concentrations that lighten the tooth without damaging the enamel. What can happen is that you notice sensitivity to cold for a few days: that is normal, it is temporary and it can be managed.
The real risk lies in doing it on your own: internet kits, “miracle” pastes or unsupervised strips can irritate the gum or simply not work at all. That is why the sensible thing is to have your mouth checked first. This is general information and does not replace a professional assessment.
How is it done in the clinic?
Before whitening, the usual step is a check-up and, very often, a scale and polish, because whitening takes better and more evenly on clean teeth. There are two typical methods, and they are often combined:
- In the clinic: the gel is applied and activated with a special light. You notice the change the same day.
- At home with trays: the dentist makes custom trays and a milder gel to use at home for a few days, under supervision.
How long does the result last?
Between one and three years, tending towards the lower end if you smoke or drink a lot of coffee, tea or red wine, which are the big stainers. It is not forever, but it holds up quite well with good hygiene and the occasional touch-up. Many people in Bilbao have a light refresh every so often rather than starting from scratch.
Who is it not suitable for?
Whitening lightens the natural tooth, but it does not change the colour of fillings, crowns or veneers: if you have those pieces on show, the shade can end up uneven. It is also not recommended during pregnancy, or with untreated cavities or inflamed gums. With very marked stains, the result sometimes falls short and veneers are considered. All of this is assessed at a check-up.
How much does it cost?
As a market reference, not as the clinic’s price:
| Type | Rough range |
|---|---|
| In-clinic whitening | 250 € – 500 € |
| At-home trays | 200 € – 350 € |
| Combined (clinic + home) | 350 € – 600 € |
These are ranges to give you an idea. The firm quote is given at the first visit, which is free, after seeing your case.
What if I have sensitivity?
If your teeth are already sensitive by nature, tell the dentist: the gel concentration is adjusted and products are used to reduce the discomfort. It is not a reason to give up, just a reason to do it sensibly and under supervision.
If you fancy a fresh smile for the summer or a special event, the first step is a check-up to see your starting point. In Bilbao, the first consultation is free: book an appointment with no obligation and we will tell you what result you can expect in your case, with no false promises.
Frequently asked questions
Does teeth whitening damage the enamel?
Done by a professional and with the right products, whitening does not harm the enamel. It can cause passing sensitivity for a few days, but it does not weaken the tooth. The risk lies in home products that are misused or unsupervised.
How long does teeth whitening last?
It usually lasts between one and three years depending on your habits. Coffee, tea, red wine and tobacco shorten it. With good hygiene and the occasional touch-up it lasts longer.
How much does teeth whitening cost?
As a rough market range, in-clinic whitening usually runs from 200 to 500 euros. This is a reference figure, not a fixed price: the exact quote is given at the first visit, which is free.
Can we help with your case?
Free first consultation and diagnosis in Bilbao, no commitment.
