Teeth whitening is among the most popular aesthetic dental treatments, but many have wrong expectations for the result. A dentist explains what whitening can really achieve, what shades do not respond to treatment and why the result is not the same for everyone.
It cannot change the colour of crowns, porcelain veneers, fillings (fillings) or other prosthetic restorations. For a safe, predictable and natural result, the combination of professional cleaning and personalized whitening is the ideal approach for a healthy and radiant smile.
Yellow Teeth: Is it the fault of age, smoking or DNA after all?
The colour shade of teeth is influenced by many factors. First of all, age. The younger we are, the brighter our teeth usually are. Over the years, enamel thins and becomes more transparent, making the naturally darker dentin more visible, making teeth appear more yellow.
Heredity also plays an important role. DNA determines the thickness and natural shade of enamel and dentin, which is why some people have whiter teeth from birth than others.
Finally, our daily habits affect tooth colour exogenously. Smoking, as well as the frequent consumption of coffee, tea and red wine, cause pigments that adhere to the surface of the teeth, aggravating their colour. The combination of all these factors explains why tooth colour varies so much from person to person.
Whitening in the doctor's office or at home?
Both methods are safe and effective when applied under the guidance of the dentist. Whitening in the doctor's office offers immediate results, as whitening agents of higher concentration are used, which are activated with special light, always with absolute protection of the gums and soft tissues.
Home whitening, with personalized splints and a special whitening gel, is more gradual, offers greater flexibility and makes it easier to maintain the result in the future. The choice of the appropriate method depends on the needs and expectations of each patient, while the combination of the two often offers the best and longest-lasting result.
Does whitening destroy tooth enamel?
The answer is no, when whitening is carried out correctly and under the supervision of the dentist. Whitening agents release active oxygen, which penetrates the enamel and dentin, neutralizing endogenous pigments without removing or damaging the dental substance.
Each treatment is always preceded by a detailed clinical examination to ensure that the teeth and gums are healthy and that there are no caries, cracks, leaking fillings or other conditions that need to be treated first.
Some patients may experience transient sensitivity during or after whitening. This is due to the temporary increase in pressure inside the dentinous tubules, as the whitening material diffuses inside the tooth to act on the endogenous pigments. The sensitivity soon subsides and is not an indication that the enamel or tooth is damaged. With the right diagnosis and application, whitening is a safe and scientifically documented aesthetic treatment.
Baking soda, whitening toothpastes, or TikTok hacks? Are they finally doing something?
The short answer is: no, they can't actually whiten teeth. Baking soda and most whitening toothpastes work mainly mechanically, removing surface pigments. They do not affect endogenous pigments, so they cannot open the natural colour of the teeth.
As for the various "hacks" circulating on social media, many lack scientific documentation and some can cause damage to the enamel or irritation of the gums. If you want real and safe whitening, the only scientifically proven solution is the treatment carried out or guided by the dentist.
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