Internal Bleaching - Metropolitan Dental Care (2024)

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November 25, 2019

Internal Bleaching - Metropolitan Dental Care (18)

You’ve had a root canal on one of your front teeth and now you’ve noticed the tooth is turning gray. Now what? Sometimes changing the temporary filling in the back with a permanent white filling is enough to eliminate this graying. If not, internal bleaching is a great option to restore luster to teeth after root canal treatment.

What is internal bleaching?

Internal bleaching is the process of bleaching or whitening a tooth from the inside out. Unlike traditional tooth whitening, where whitening agents are applied to the outside of the tooth, internal bleaching is completed from the inside out. In cases of trauma or caries, the discoloration begins from inside of the tooth and spreads outwards. These types of stains can be eliminated by chemical means, via internal bleaching (a more conservative option), or by crowning or bonding the tooth surface in order to mask the discoloration. Oftentimes, a combination of internal bleaching and restorative therapy is used.

How is internal bleaching different than tooth whitening?

Traditional tooth whitening removes stains from the external surfaces of the teeth. There are a myriad of over the counter and dentist prescribed methods to achieve this goal, all of which are applied to the outside of vital or non-vital teeth. Internal bleaching on the other hand involves placing peroxide crystals inside of your tooth. In order to perform this type of whitening, a root canal must have been completed prior to starting treatment.

At your dental appointment, a small hole will be made in the back of the tooth and any debris will be removed. Then, the bleach crystals are placed inside of the tooth and the access sealed with a temporary filling material. Sometimes the bleaching process can take as little as 30 minutes, but more often than not, the bleach is allowed to sit inside of the tooth for 1-2 weeks. At this time the tooth is re-evaluated by your dentist. This process can be repeated if the desired color has not been achieved. Since the tooth has already been root canal treated, this process is painless and you are able to eat and drink normally while the bleach is inside of the tooth.

It is important to note that internal bleaching may not be able to eliminate all staining. In these cases, a crown is indicated in order to match the root canal treated tooth to the adjacent teeth and to protect the root canal treated tooth from biting forces.

If you think you might be a candidate for internal bleaching, talk to your dentist at Metropolitan Dental Care to see if this is the right treatment for you!

AUTHOR

Dr. Lauren Liebman

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Internal Bleaching - Metropolitan Dental Care (2024)

FAQs

What do dentists use for internal bleaching? ›

Internal bleaching on the other hand involves placing peroxide crystals inside of your tooth. In order to perform this type of whitening, a root canal must have been completed prior to starting treatment. At your dental appointment, a small hole will be made in the back of the tooth and any debris will be removed.

How long does internal teeth bleaching last? ›

And like external teeth whitening, it is not a definitive procedure. Your tooth may discolor in the future, but this process helps improve aesthetics for a very long time. Studies show that internal bleaching can last 5 to 7 years!

What is the success rate of internal tooth bleaching? ›

Internal bleaching with a 30 percent hydrogen peroxide solution is aesthetically very successful in the short term; however, in the long term, the success rate falls below 50 percent.

Can you do internal bleaching without root canal? ›

Internal bleaching must be conducted by your dentist and can only be performed after successful root canal therapy. Not everyone is a candidate for internal bleaching and one of our doctors will evaluate your case on an individual basis.

How long does internal bleaching last on root canal? ›

How long does internal tooth bleaching last? The longevity of your bleaching results will depend on a few factors. If you have had a root canal before your procedure, internal tooth whitening may be a long-lasting or even permanent solution. Infections can cause discoloration to reoccur.

Is internal tooth bleaching painful? ›

Any surgical procedure carries some risk. Internal bleaching is very safe, but you should be aware that some patients do experience slight discomfort or pain caused by the bleaching agent. We'll give you thorough instructions on what to do and how to contact us if that happens.

What are the risks of internal whitening teeth? ›

However, like in any other medical treatment, there are some risks involved. For internal tooth bleaching of non-vital teeth, the gel used to whiten the teeth (mostly hydrogen peroxide) can extremely rarely lead to bone resorption, resorption of tooth material or gum inflammation.

Does internal bleaching work on a dead tooth? ›

Yes, it is possible to whiten a dead tooth, but the key to successful treatment is a targeted approach. A dead tooth whitens more slowly, which requires additional treatments. So, it's likely that whitening all your teeth will only result in the dark tooth looking even more noticeable compared to the surrounding teeth.

Does internal bleaching work immediately? ›

The bleaching agent is placed inside and sealed. Periodic evaluations are made every few weeks to determine the appropriate shade to the adjacent teeth. Internal bleaching generally takes 3-4 months to achieve the desired result.

What are the cons of internal bleaching? ›

Disadvantages of internal bleaching include:

The bleached tooth may not match your other teeth precisely. Often, it is initially slightly whiter than the surrounding teeth.

Is internal bleaching expensive? ›

The average cost of internal tooth bleaching is around $150 per tooth. However, you may also find lower prices or prices that go as high as $600. The cost may be affected by the number of teeth you choose to treat, your location and the fees of the dentist that you choose.

How many sessions for internal bleaching? ›

This procedure is repeated 2 or 3 times until desirable results are reached. When the desired colour is reached, the cosmetic dentist will remove any whitening agent from inside the tooth and seal it with a permanent filling.

Can internal bleaching cause cervical resorption? ›

Cervical root resorption is an inflammatory- mediatedexternal resorption of the root, which can be seen after traumaand following intracoronal bleaching. Key words : Hydrogen peroxide, carbamide peroxide, sodium perborate, esthetics, resorption, barrier.

Why did I smell bleach during root canal? ›

Sodium hypochlorite is a bleaching agent commonly used during root canal treatment to clean the canals and pulp chamber of a tooth to dissolve any bacteria present.

Does internal bleaching cause resorption? ›

Internal bleaching is an effective and minimally invasive way of bleaching non-vital teeth. A commonly cited risk associated with it is external cervical resorption (ECR), which is a potentially significant complication that could result in loss of the tooth.

Can you internally bleach a tooth more than once? ›

In this procedure, bleach crystals are placed inside the tooth, left for several days and then the patient returns to the dental office to have the bleach crystals removed. Again, this procedure may be performed one or more times, depending upon the discoloration of the tooth.

Can you do internal bleaching more than once? ›

Once it reaches the color that matches your adjacent teeth, the bleaching material can be removed from the tooth and will be ready for a permanent filling. A tooth with severe discoloration may require more than one round of internal bleaching.

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