Skip to main content

Teeth Whitening

blanqueamiento dental


Tooth whitening is a dental treatment designed to lighten and improve the colour of teeth. It aims to remove unwanted stains, discolourations, and pigmentations on tooth enamel. It is a popular treatment to improve dental aesthetics and achieve a more attractive smile.

Furthermore, it should be borne in mind that the shade of teeth is specific to each person and changes over the years, whether due to age or other factors such as diet, habits, or even medical needs.

Tooth whitening offers the solution to teeth that, with the passage of time, have suffered a change in colour, becoming a yellowish colour, either due to food and drink such as coffee, tea, tobacco, medication such as tetracycline or because a root canal has been performed on a tooth.

This aesthetic treatment leads to an improvement in the self-esteem of the person, who feels more confident and comfortable smiling and engaging in conversation with a radiant smile and whiter teeth.


The treatment is carried out by applying whitening gels that release oxygen and produce a whitening effect on the teeth. At the Curull aesthetic dental clinic, after oral hygiene, the teeth are polished with a specific toothpaste and a whitening gel is applied.

In our clinic, we offer different types of teeth whitening adapted to your needs. We use whitening gels that release oxygen and generate a whitening effect on the teeth. Depending on your situation and preferences, you can opt for an in-clinic treatment or a home treatment. If the client has the whitening treatment at home, we provide the patient with a whitening kit that includes all the material to carry out the treatment at home, as well as detailed instructions on the process to be followed.

Tooth sensitivity is an important aspect to consider during the whitening process. Our professionals make sure to minimise any discomfort, and in cases of previous sensitivity, additional measures are taken to protect your teeth and ensure the best oral health.


Of course, for a teeth whitening treatment to be effective, some very essential guidelines must be followed. We detail them below:

  • Tooth surfaces must be clean and free of bacterial plaque.
  • Very careful dental hygiene is required.
  • The gums must be healthy.
  • There should be no presence of caries.

Successful stories


This time we would like to share with you a case of tooth whitening. This case is about a 45 year old patient who came to our practice because she wanted to whiten and correct the position of her teeth. Thanks to the latest whitening techniques, our specialist team was able to treat these dental problems and improve our patient’s dental aesthetics. For best results, we performed a specific internal whitening on a central incisor combined with a one-month at-home whitening supervised by Dr. Arias.
Continue reading this success story

Ask us about teeth whitening treatments!

 (+34) 977 24 13 80

Call us


Frequent Questions

What causes the discoloration of the teeth?

There are several causes. The most common are age, consumption of colouring substances (coffee, tea, and tobacco), trauma, degeneration of the nerve inside the tooth and old restorations. During the formation of the dentition, the consumption of tetracycline or excess fluoride can cause discolouration of the teeth.

Who can benefit from teeth whitening?

All kinds of people in general terms. However, there are some cases in which the treatment may not be effective. The dentist can determine who is a suitable candidate for the process through comprehensive oral diagnosis and examination. Dark stains on your teeth, such as those caused by antibiotics, may take longer to respond to treatment. The degree of white achieved may vary from patient to patient, depending on the structure of the teeth, the number of applications and/or the time during which the treatment is used.

Is the process safe?

Yes! Research and clinical studies indicate that teeth whitening with Carbamide Peroxide or Hydrogen Peroxide, under the supervision of a dentist, is safe for the teeth and gums. In fact, many dentists consider this tooth whitening process to be the safest cosmetic dental procedure available today.

Is teeth whitening harmful? Does it wear or abrade them?

The products and concentrations that dentists use to whiten teeth are not abrasive or harmful to oral structures (neither for the enamel nor for the gum nor for the mucosa). Whitening is harmful if it is done without professional dental supervision, since the mouths of the patients must meet adequate health and hygiene requirements. Not all patients who want to have a whitening can do it. The dentist will be the one who indicates to the patient, or advises against, a whitening.

How long does a treatment take?

After the recommended oral exam is done, the entire procedure is done in one appointment. The procedure begins with a period of preparation of the area to be bleached, followed by one or more bleaching sessions of 15 minutes each in the clinic, these will be carried out at the discretion of the dentist who is performing the bleaching. Later you should continue at home with the treatment, using the splints and the whitening product following the professional’s time guidelines for two or three weeks.

How long does results last?

Your teeth will always be whiter than before the treatment, however some patients may need a touch-up every two or three years, to maintain the whitest possible hue. It is advisable to avoid substances such as coffee, tea, red wine and tobacco so that the results are more lasting.

Are there any adverse effects?

Certain people experience increased sensitivity to cold during treatment. These symptoms disappear after 1-3 days after treatment is finished or stopped.

To know the possibilities of the teeth whitening in your case, you can request an appointment for a personalized, free and commitment-free diagnosis.

What is the difference between whitening that is performed with lamps or laser and the one that the patient is done at home under dental supervision?

The main differences are the concentrations of the active ingredients, the result that is achieved, the duration of the treatment and the time of colour stability in the future.

Basically, the products that are used with lamps and lasers are of very high concentration, but since the sessions are specific, the results that are achieved are not very satisfactory, they brighten more than they whiten and the original colour recurs in a short time, that is, the result that is achieved does not last long.

On the other hand, the products that are used at home are of lower concentration, it is true that they require discipline on the part of the patient to do it every day, but the results that are achieved are really optimal and their stability over time is very long-lasting.

Sometimes, in cases of very dark teeth, the idea is to treat these teeth with both techniques combined: clinical sessions with continuity of treatment at home by the patient.

Are there whitening toothpastes and mouthwash on the market?

No toothpaste and mouthwash have scientifically proven its whitening power on teeth. Also, you have to be careful because many are abrasive to the enamel. There are, yes, specific products that will help us maintain the colour obtained after teeth whitening for a longer time.

What is combined teeth whitening?

It is a type of treatment that takes a comprehensive approach, combining both aesthetic and oral health aspects. This treatment combines traditional whitening with additional measures to treat discolouration. For example, tooth whitening can be combined with other procedures such as tooth polishing and professional cleaning to remove surface stains. Combination whitening is highly customisable for a whiter, healthier smile.

Our patients Say

Georgina (Tarragona)

“They keep telling me: Georgina, what a beautiful smile you have!”

Read more

Cinta (Tarragona)

“Thanks to the treatment, I now smile with confidence and peace of mind.”

Read more

Albert (Tarragona)

“I have gained a lot of confidence. I finally speak without fear!”

Read more