Best Internal Bleaching Dental Clinic in Dubai

What is Internal Bleaching?

Internal bleaching is a specialized whitening procedure used to lighten a discoloured tooth that has previously undergone root canal treatment. Unlike external whitening, this technique targets staining from within the tooth. After confirming the tooth is properly sealed and free of infection, a small access is made, and a bleaching agent is placed inside the tooth. The access is then temporarily sealed, and the tooth is monitored over several days or weeks, with the process repeated if needed. Once the desired shade is achieved, the bleaching material is removed and the tooth is permanently restored. Internal bleaching is a safe and effective way to restore a natural, uniform appearance to non-vital teeth.

Internal teeth bleaching, also known as internal tooth whitening, is a procedure used to whiten teeth that have darkened or become discolored due to trauma, root canal treatments, or other internal factors. The major types of internal teeth bleaching are:

Walking Bleach Technique: This involves placing a bleaching agent, such as sodium perborate mixed with water or hydrogen peroxide, inside the tooth and sealing it with a temporary filling. The patient “walks” with the bleaching agent in place for a few days before it is removed and replaced as needed until the desired whitening is achieved .
Thermocatalytic Bleaching: This method involves placing a bleaching agent inside the tooth and then applying heat to accelerate the bleaching process. This technique is less commonly used due to the potential risk of damaging the tooth structure from the heat.
Inside/Outside Bleach Technique: A combination of internal and external bleaching methods. A bleaching agent is applied both inside the tooth and on its external surface. This is typically used for more extensive discoloration and may involve custom-made trays for home use.

Dental professionals typically perform these methods to ensure safety and effectiveness.

Causes of Tooth Discoloration

Internal causes of tooth discoloration

Discoloration of teeth as a result of taking some drugs (tetracycline)
Discoloration of teeth as a result of metabolic causes: dystrophic calcification, fluorosis
Teeth discoloration as a result of genetic factors: congenital
Erythropoietin porphyria, cystic fibrosis of the pancreas,
hyperbilirubinemia (newborn jaundice), gametogenesis imperfecta,
Ethnogenesis imperfect.

External causes of tooth discoloration

The leading causes of chromogenic are the consumption of some food sources such as wine, coffee, tea, carrots, oranges, licorice, chocolate, and tobacco from the habit or use of mouthwashes, or the presence of plaque on the surface of the teeth.

Walking Bleaching Technique

The first description of the bleaching technique is walking, with a combination of sodium perborate and distilled water.

In this process, the compound remains in the pulp cavity for several days, and the access cavity is sealed (sealed) with temporary cement or glue.

Internal bleaching dental clinic experts recommend using 30% hydrogen peroxide instead of distilled water to increase the bleaching effect of the composition.

A combination of sodium perborate and water or hydrogen peroxide is still used today and has been described many times as a successful technique for bleaching the inside of a tooth crown

Application of bleaching agent

Sodium perborate (tetrahydrate) combined with distilled water at a ratio of 2:1 (g/ml) is a suitable bleaching agent. If severe discoloration has occurred, 30% hydrogen peroxide can be used as an alternative to water.

The bleaching agent should be changed every 3 to 7 days. Successful bleaching results will be noticeable after 2 to 4 sessions, depending on the severity of the discoloration.

Our internal bleaching dental clinic experts say that the patient should be taught to evaluate the tooth color on a daily basis and to visit the office if bleaching is acceptable to prevent over-whitening.

Success Rate and Longevity of Internal Teeth Bleaching

The success rate of various internal bleaching methods with different materials inside and outside the office is about 83 to 90 percent. That is, out of every 100 teeth that have undergone root canal treatment and are discolored, about 10 to 17 cases do not return to their natural tooth color with the internal tooth bleaching treatment.

The durability of internal tooth whitening in some patients is lifelong. But in general, 35-50% of the teeth will still remain white about 5 years after the treatment, and for the rest, bleaching should be repeated.

Repetition of internal bleaching requires trimming the previous restoration and creating a proper access hole. For this reason, part of the healthy dental tissue is cut. Therefore, in such cases, it is better to perform external bleaching first, and if the desired result is not achieved, then internal bleaching should be repeated.

Frequently Asked Questions