Root Canal in Rego Park Queens, NY

The practice of treating root canals is known as Endontocs. Dr Pinchas has treated many patients for root canals and here explains the process.


Endodontic retreatment is the process of performing a dental root canal procedure on a tooth that has previously had a root canal.
The retreatment is the process of a second dental root canal procedure carried out on a tooth that has previously had root canal treatment. It is therefore also known as 'repeat root canal treatment.
One reason for endodontic retreatment is failure of the initial endodontic procedure: usually a second ental abcess will occur.

There are many reasons that an endodontic treatment may fail. On common reason is inadequate chemomechanical debridement of the actual root canal, usually in the apical third of the root canal. It is possible that the gutta-percha becomes contaminated with oral bacteria due to exposure of the obturation material to the oral surroundings.

Therefore if an endodontic procedure is to take place, the contaminated gutta-percha must be retreated so as to reduce the risk of failure.

The type of bacteria found inside a failed root canal may differ from the normal infected tooth.

Endodontic retreatment is very demanding. The chance of a 5 year success rate is around 60% compared to around 85% for an initial root-canal procedure. It is very time consuming and in some cases may be referred to a specialist endodontist who may use a microscope or other magnification.

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Endodontic Retreatment: A second chance to save your tooth.

With proper care, most teeth that have had endodontic (root canal) treatment can last as along as other natural teeth.In some cases, however, a tooth that has received endodontic treatment fails to heal or the pain continues. Occasionally, the tooth becomes painful or diseased months or even years after successful treatment. If your tooth has failed to heal or has developed new problems, you have a second chance. Another endodontic procedure may be able to save your tooth.

Who performs endodontic retreatment?

All dentists receive endodontic training in dental school, however retreatment is more challenging and many dentists refer the work to retreatment work to endodontists. They have at least two years experience of advanced education and training in root canal techniques and procedures.
In addition to treating routine cases, they are also proficient in performing complicated procedures, such as surgery, and in treating difficult cases, such as teeth with narrow, blocked, or unusually positioned canals. This special training and experience can be valuable if retreatment is necessary.

Reason for another endodontic procedure.

As may happen with any dental procedure, a tooth may not heal as expected, due to one or more of the following:

  • Narrow or curved canals were not treated during the initial procedure.
  • Complicated canal anatomy went undetected in the first procedure.
  • The crown or other restoration was not placed soon enough after the procedure.
  • The restoration did not prevent saliva from contaminating the inside of the tooth.

In some instances another problem with that tooth could cause the need for the retreatment of a root canal. In some instances new decay could expose the root canal filling material to bacteria thus causing a new infection. Also loose, cracked or a broken crown or filling could also expose the tooth to a new infection.

What is the process during retreatment?

1) The endodontist will discuss your treatment options and explain the process. Once you have decided to go ahead with the procedure the dentist will reopen the tooth to gain access to the root canal filling material. The complex restorative materials including crown, post and core material must be removed in order to permit access to the root canals.

2) Once the canal filling is removed, the endodontist will clean the canals and examine the inside of the tooth, looking for any root canals or any anatomy that requires treatment.

3) One the dentist is sure that the canal is completely cleaned he will fill and seal the canal(s) and place a temporary filling in the tooth. During this time he will prepare the post.

4) At the final visit with your endodontist, you will need to return to have the new crown or restoration placed on your tooth and restore it to full function.

How effective is retreatment?

Retreatment of a tooth can function well for years, even for a lifetime. It is usually always best to save the tooth. There are constantly new advances in endodontic technology so the dentist may use a different treatment than what was used the first time.

How much will it cost?

The cost depends entirely on how complicated the procedure will be. It will usually be more complex than the first procedure due to the fact that restoration and filling material will have to be removed to clean root canals. The endodontist will also have to search the canal anatomy.This is a time consuming process and you can expect it to cost more than the initial endodontictreatment.

What is the alternative?

The only other alternative to retreatment is extraction of the tooth. It must then be replaced with an implant, bridge or removable partial dentures to restore chewing fuction and prevent teeth from shifting. Nothing is as good as saving the original tooth. For more information please contact Dr Eduard Pinchas.

Dr Pinchas wil give you his honest opinion as to whether he thinks there is a chance to save your tooth. For more information or for an appointment call 718-779-2242.