Teeth whitening is the process of removing pigmentation from the surfaces of hard teeth and making them appear
Many materials used to whiten teeth, the most important of which is peroxide.
As these bleaching materials degrade and break down the external pigments stuck to the surfaces of the teeth, they create asmall particles, resulting in a reduction in tooth sensitivity.
Concentrating these colorings or dyes and making the teeth appear whiter.
And it should noted that the results of teeth whitening are temporary and not permanent, which means that
continuing to eat coloured foods and drinks greatly reduces the period during which the teeth remain white.
And increases the chances of the teeth returning to their original colour.
Teeth whitening methods
There are several ways to whiten teeth, the three most common of which are as follows:
- Whitening in the dental clinic: This method requires multiple visits to the dental clinic, where a size of the patient’s
teeth is taken, a mould is made for them, and then the dentist uses the bleaching material, places it inside the mould,
and then places the mould on the patient’s teeth.
- Bleaching at home under the supervision of a doctor: It made in the same way as the previous method, with the
exception that the patient uses bleaching material alone at home per the doctor’s instructions.
- Laser whitening: A bleaching substance applied to the teeth, and then a laser light shone on them, activating the process of removing pigmentation from the surfaces of the teeth. This method is faster than the previous ones, but it is more expensive.
- Whitening pastes: This is the method in which tooth whitening pastes are used.
And is one of the gentlest and least harmful methods for teeth.
And toothpastes help to remove surface pigmentation, as it contains abrasive materials that
remove pigmentation, and the use of toothpastes does not change their color.
But rather removes pigments.
Laser bleaching side effects
The following are the side effects of laser teeth whitening:
- When compared to other methods of whitening.
There is a greater risk of tooth sensitivity.
Tooth sensitivity is the sensation of pain when eating cold or hot foods.
And tooth sensitivity is more severe in people
who have a thin tooth enamel layer.
- the occurrence of irritation to the tissues surrounding the teeth;
Due to the acidic nature of the bleaching material.
Prolonged contact with the soft tissues surrounding the teeth may
lead to irritation.
In general, these damages can occur regardless of the type or method of whitening used.
And not only in the case of laser whitening.
Methods of treating tooth sensitivity caused by whitening
To reduce tooth sensitivity caused by teeth whitening, the following methods can be used:
- Placing the bleaching material on the teeth’s surfaces for a shorter period of time.
- Refrain from doing the whitening process for a few days to allow the teeth to adjust to the whitening process.
- Using fluoride-containing products after and before the whitening process.
As recommended by the dentist; this is because these products help re-mineralize the teeth.
- Use a toothpaste for sensitive teeth, and it is necessary that it contains potassium nitrate, which relieves pain in the
Causes of tooth discoloration
There are numerous causes for a change in the colour of one’s teeth, the most important of which are as follows:
- Coffee and tea, for example, contain pigments and coloured materials that adhere to the outer surfaces of the teeth,
causing a change in the natural colour of the teeth.
- Cigarettes contain tar and nicotine, and tar is a dark substance.
Whereas nicotine is colourless but turns into a coloured substance when it interacts with oxygen, giving the teeth a
- Heredity: a person’s genes may produce darker teeth than normal.
- Fluorosis: Fluorosis occurs in the early stages of tooth formation, and fluorosis appears in the form of white spots or
lines on the teeth, and its cause is an increase in the proportion of fluorine in drinking water.
And fluorosis occurs in children at the age of eight.
And appears on the surface of the tooth in the form of white chalky spots or brown
pigmentation or clicks.
- Age: Aging causes a loss of the outer layer of the teeth, known as the enamel layer, resulting in a thin layer that reveals
the yellow dentin layer beneath, making the teeth appear yellower not whitening in the elderly.
- Some medicines, such as antihistamines and antidepressants.
Can cause teeth discoloration, and some antibiotics.
Such as tetracycline and doxycycline.
Can cause teeth discoloration in children.
- Blows that may cause tooth discoloration: because they cause an increase in the yellow substance of dentin in the
Cases excluded from teeth whitening
Bleaching may not be appropriate for everyone, as there are some cases where it is difficult to whiten the teeth, and it is not recommended to do teeth whitening for people who have the following conditions:
- Children under the age of sixteen, due to the large pulp of the teeth in these children, which may cause irritation of the pulp of the teeth from the bleaching material.
- Pregnant and lactating women.
- Teeth that are sensitive in nature, or problems of receding gums and exposure of the roots of the teeth.
- People who are allergic to bleach.
- People who have gum disease, have lost the outer layers of their teeth, or have dental caries
- Who have cosmetic fillings or other types of artificial prostheses, as the colour of fillings, bridges, and ceramic
prostheses will not change.
- Who believe that teeth whitening will produce more results than it actually does may be disappointed if they do not
obtain the desired results.