Teeth whitening

Teeth whitening, where science and art converge to create captivating smiles.


A gleaming smile has the power to captivate hearts and leave a lasting impression. However, as time passes, our teeth may lose their lustrous shine, succumbing to unsightly yellowing. Fear not, for the enchantment of teeth whitening is here to rescue your pearly whites from the clutches of discoloration.


Teeth whitening, also known as tooth bleaching, is a transformative process that works its magic by brightening the color of human teeth. This highly sought-after treatment tackles the intrinsic and extrinsic stains that mar the enamel’s natural radiance.

But how does it work?

At the heart of teeth whitening lies the mighty hydrogen peroxide. This powerhouse ingredient takes center stage in whitening products, appearing as either hydrogen peroxide or carbamide peroxide. Once it encounters water, hydrogen peroxide springs into action, releasing its remarkable bleaching prowess.

As this remarkable compound permeates the tooth, it assumes the role of an oxidizing agent, breaking down and generating unstable free radicals. These mischievous radicals seize the opportunity to latch onto organic pigment molecules, found in the nooks and crannies of tooth enamel, resulting in the formation of smaller, less pigmented components. By reflecting less light, these diminutive molecules work their magic, creating a stunning “whitening effect.”


Now, when it comes to banishing those stubborn stains, dental professionals, such as dental hygienists or dentists, play a crucial role. Armed with their expertise, they skillfully diagnose the type, intensity, and location of tooth discoloration, ensuring a tailored whitening treatment for each individual. The duration of exposure and the concentration of the bleaching compound become the guiding stars on the journey to achieving the desired teeth whitening endpoint.

Let’s delve into the origins of tooth staining and discoloration, for it is here that we find the true adversaries in our pursuit of radiant smiles.

The two primary sources of tooth stain:

Intrinsic and extrinsic. While traditional cleaning methods like debridement or prophylaxis can tackle extrinsic stains, teeth whitening sets its sights on the more elusive intrinsic stains. These intrinsic stains, deeply embedded within the tooth, require the specialized powers of whitening treatments to be vanquished.

Extrinsic stains, on the other hand, arise from external factors that leave their mark on the tooth’s surface. Picture the blood-red saliva associated with betel leaf, imparting a red-brown to nearly black hue upon our precious teeth. Tannin, a chromogenic agent found in popular indulgences like coffee, tea, and red wine, can also tarnish our smiles, casting a brownish shadow upon the enamel. Even seemingly innocent delights such as curries and tomato-based sauces can conspire to leave their mark.

But there’s more to the story. Certain topical medications, like chlorhexidine mouthwash, can bind to tannins, leading to extrinsic staining in individuals who enjoy coffee, tea, or red wine. However, fear not, for these stains are but temporary visitors that can be banished with proper brushing and oral care.

Metallic compounds also pose a threat to our teeth’s radiance. Whether through medicinal use or occupational exposure, iron, iodine, copper, nickel, and cadmium can leave their colorful Imprints, ranging from black to green and yellow-brown.


Teeth whitening may be undertaken for a variety of reasons, but whitening may also be recommended to some individuals by dental professionals.

Intrinsic tooth staining


Dental fluorosis

Endodontic treatment (internal bleaching)

Tetracycline staining

How is the appropriate type of teeth whitening chosen for a patient?

The wide variety of teeth whitening methods allows a large number of clients to avail of this service. Through a preliminary examination prior to the whitening session, the dentist can determine which type of teeth whitening is most suitable for the client in terms of tooth shade, color, and skin complexion.

What are the types of teeth whitening?

In recent years, dentists have developed several techniques that effectively eliminate yellowing of teeth and restore their natural color. This is often caused by daily habits and neglect of dental care, in addition to consuming unhealthy foods. Many people have been able to restore the natural color of their teeth by undergoing one of the following types of teeth whitening:

Chemical Teeth Whitening

Different types of chemical teeth whitening methods vary based on the materials used. Some rely on carbamide peroxide, while others prefer hydrogen peroxide. Both of these substances help whiten teeth by approximately 4 to 6 shades when applied for 40 minutes. Some individuals may be concerned about chemical teeth whitening, thinking that it may harm the enamel or their overall oral health. However, studies have refuted these claims and have instead demonstrated the effectiveness of the aforementioned substances in safely whitening teeth when used in approved concentrations and within the specified time frame.

Teeth Whitening with Laser

Laser teeth whitening has managed to surpass all previous types of teeth whitening due to its faster results. The following steps are taken during laser teeth whitening:

The dentist applies a low-concentration whitening gel to the teeth.

The laser beam is directed towards the teeth for a duration of approximately 15 to 20 minutes.

The laser light stimulates the whitening agent present in the gel to interact with the teeth.

Tags :