5 ways to whiten your teeth

Last updated on: 5 Aug, 2026

A beautiful smile is often described as a person’s calling card. Having white teeth doesn’t just mean improving your appearance, but also enjoying good health. More and more people are looking for ways to change the appearance of their teeth through various whitening methods. 

The teeth whitening procedure is one of the most popular cosmetic practices in dentistry, allowing for a brighter and more attractive shade of teeth without invasive procedures.

Image: freepik

What is teeth whitening?

Teeth whitening aims to remove discolouration from the tooth surface and restore the teeth to their natural whiteness or even make them whiter. It is a chemical process in which active substances such as hydrogen peroxide or carbamide peroxide penetrate the tooth enamel and reach the dentine, where they break down the pigment molecules responsible for the unwanted colour.

The procedure is carried out under the supervision of an experienced dentist, who carefully selects the concentration of the whitening agent and the method of application according to each patient’s individual characteristics. When performed correctly, the structure of the teeth is not damaged, and the effect is visible and long-lasting.

When is it necessary to undergo the procedure?

The decision to have teeth whitened is a personal one and depends on each individual’s personal wishes and aesthetic preferences. There are a number of factors that make the procedure particularly advisable.

Reasons for tooth discolouration

There are many different reasons for changes in tooth colour. Among the most common are the regular consumption of pigment-containing foods and drinks such as coffee, red wine, black tea, fizzy drinks and certain sauces. The specific effect of food on teeth is strong and long-lasting, as the colouring agents gradually penetrate the enamel and alter its natural colour.

Smoking is another major factor leading to yellowing and darkening of the teeth. Nicotine and tar leave permanent stains that are difficult to remove by brushing alone. The build-up of plaque and tartar also contributes to discolouration, as these deposits have a porous structure that traps colourants.

With age, the natural colour of teeth changes, as the enamel becomes thinner over the years and the dentine naturally darkens, making the overall colour of the tooth more yellowish. Certain medications taken during childhood, as well as fluorosis, can cause permanent staining of the teeth.

Symptoms indicating a need for whitening

The main sign that you may need whitening is a visible change in the colour of your teeth, when they appear yellowish, greyish or have an uneven colour. If you notice that your teeth are significantly darker than before or that your smile is no longer the same and you are unhappy with it, this is a reason to seek advice from a specialist.

It is important to know that before whitening, your teeth must be completely healthy, with no cavities or gum inflammation. Timely dental care and regular check-ups are essential for a successful cosmetic procedure.

What are the benefits?

The many advantages of whitening go beyond its most common benefit, namely the change in tooth colour.

Key benefits of teeth whitening:

• Boosted self-confidence – a beautiful smile gives you confidence in social situations, at business meetings and in your personal life, helping you feel more attractive and successful.
• Improved appearance – whitened teeth look cleaner and healthier, which changes your overall appearance and indicates good oral hygiene.
• Safe and non-invasive procedure – unlike other cosmetic procedures, whitening does not require grinding or damaging the tooth structure.
• Quick and visible results – depending on the method chosen, the effect can be achieved in a matter of hours or days.

Teeth whitening is an excellent option for anyone who wants to invest in their smile and appearance in a safe and effective way.

Image: freepik

What methods of teeth whitening are available?

There are various approaches to achieving whiter teeth, each with its own characteristics, advantages and suitable applications. The choice of method depends on individual needs, the desired whitening timeframe, budget and the condition of the teeth.

Professional teeth whitening at the dentist’s surgery

Professional whitening is carried out by an experienced dentist in a controlled clinical environment. This method uses gels with a high concentration of hydrogen peroxide, which allows a significant effect to be achieved in just one session, lasting around one to two hours. 

The procedure begins with thorough removal of tartar and plaque, followed by protection of the gums with a special gel. The whitening agent is applied to the teeth and can be activated using a special LED lamp or laser.

Home whitening with custom trays

Home whitening with custom-made trays is a gentle and effective method in which the dentist creates custom trays based on an impression of the patient’s teeth. A gel with a lower concentration of carbamide peroxide is used; this is applied to the trays and worn for several hours a day or overnight for a period of 10 to 14 days. 

This method is gentler on the enamel, carries a minimal risk of over-whitening and allows for easier control of the process. The patient can stop once the desired effect is achieved or if any discomfort arises. The whitening gel can be reused at a later date without the need for new trays.

Whitening toothpastes

Whitening toothpastes are the most affordable and easy-to-use method, suitable for dental prophylaxis and maintaining the results achieved after professional whitening. They contain abrasive particles and enzymes or a low concentration of peroxide compounds, which remove surface stains but do not have the ability to significantly alter the intrinsic colour of the teeth.

Standard recommendations for whitening with toothpastes include careful selection of products approved by dental associations and moderate use to avoid damaging the enamel. Toothpastes are suitable for daily use, but do not expect a dramatic change in colour.

Whitening strips and home-use systems

Whitening strips are thin, flexible strips coated with a gel containing peroxide, which are applied directly to the teeth for a specific period of time. They are convenient for use at home and offer moderate results with regular use. 

It is important to choose only products that comply with European regulations. In the EU, over-the-counter home-use products must not contain more than 0.1% hydrogen peroxide. Incorrect use can lead to gum burns and uneven whitening.

Alternative methods and natural remedies

Alternative methods and natural remedies, such as using bicarbonate of soda, lemon juice, coconut oil or activated charcoal, are popular online, but most are not recommended by dental professionals. 

Abrasive substances such as bicarbonate of soda can seriously damage the enamel, whilst the acids in lemon can break down the protective layer of the teeth. If you decide to experiment with home remedies, be sure to consult your dentist beforehand about the potential risks.

How does the preparation for treatment work?

Before starting a whitening procedure, a detailed examination by a dentist is essential. They will assess the condition of your teeth and gums, carry out a professional clean, and check for any cavities or other issues that need to be treated beforehand.

It is very important to discuss your expectations and goals for the whitening treatment. The specialist will determine the initial colour of your teeth using a special colour scale and will discuss the realistic, long-lasting results that can be achieved, taking into account the individual characteristics of your teeth.

If you have old fillings, crowns or veneers on your front teeth, you should be aware that whitening only works on natural teeth. Artificial materials will not change colour. In such cases, it may be necessary to replace the restorations after whitening to match the new shade.

Post-treatment care and recovery period

After the whitening procedure, it is normal to experience temporary tooth sensitivity, which usually subsides within a few days. To minimise discomfort, it is recommended to use toothpaste for sensitive teeth and to avoid cold, hot or acidic foods and drinks for the first 48 hours.

To maintain the whiteness of your teeth, certain rules must be followed. In the first 24–48 hours after whitening, it is important to avoid staining foods and drinks such as coffee, tea, red wine, blueberries, tomato sauce and other highly pigmented products. This is the critical period when the enamel is more porous and more susceptible to staining.

Giving up smoking is extremely important not only for dental care but also for maintaining a white smile in the long term. Regular oral hygiene includes brushing your teeth at least twice a day, using dental floss and mouthwash.

It is recommended that you visit your dentist every 6 months for professional dental care and, if necessary, refreshing treatments to prolong the effect. By following these recommendations, the time between whitening treatments can be significantly extended, and the results will remain long-lasting.

Conclusion

Teeth whitening is a proven and safe way to improve your smile and boost your self-confidence when carried out professionally and under the supervision of a qualified specialist. At Dentatime Clinic, we have the experience, technology and expertise to offer you personalised solutions tailored to your individual needs and expectations.

Whichever method you choose, it is important to make an informed and responsible decision to avoid any potential drawbacks of whitening. Contact the Dentatime team for a consultation and let’s work together to achieve the smile you want and deserve.

Frequently Asked Questions

How often can teeth be whitened?

With professional whitening, touch-up treatments are recommended every 6 to 12 months, depending on individual habits and oral hygiene practices. Whitening too frequently can damage the enamel.

What are the costs of whitening?

The specific cost of whitening varies depending on the method chosen. In-clinic whitening is more expensive, usually between 350–800 leva, whilst at-home whitening with trays is more affordable, at around 250–480 leva.

Are there any age restrictions?

Teeth whitening is not recommended for children and adolescents under the age of 18, as their teeth are still developing. It is also not suitable for pregnant women and breastfeeding mothers.