Why would a tooth need another procedure?
As with any dental or medical treatment, a tooth may not heal as expected after the first procedure. Common reasons include:
- Narrow or curved canals that were not fully treated the first time
- Complicated canal anatomy that was not found
- A crown or other restoration that was placed late after treatment
- A restoration that let saliva and bacteria leak into the tooth
A tooth that healed well can also run into new trouble:
- New decay exposes the root canal filling to bacteria
- A loose, cracked or broken crown or filling lets infection back in
- The tooth is fractured
What happens during retreatment
- Reviewing your optionsDr. Warren explains your choices and your chances of success before anything begins.
- Reopening the toothThe tooth is opened to reach the old filling material. A crown, post or core may need to be removed first.
- Cleaning and searchingThe old filling is removed and the canals are cleaned. Under the microscope, we look carefully for extra canals or unusual anatomy.
- SealingThe canals are filled and sealed and a temporary filling is placed. If a canal is unusually narrow or blocked, microsurgery may be recommended.
- New restorationReturn to your dentist soon for a new crown or restoration to protect the tooth.
Is retreatment the right choice?
Whenever possible, saving your natural tooth is best, and retreated teeth can work well for years, even for life. Techniques have improved a great deal, so we may be able to use methods that were not available when your tooth was first treated. As with any procedure there are no guarantees, and we will discuss the likely outcome with you.
How much does it cost?
Retreatment is usually more complex than the first root canal, since the restoration and old filling must be removed and extra time is spent looking for hidden anatomy. Expect it to cost more than the original treatment. Some insurance plans limit coverage to one procedure per tooth in a set time, so check your coverage first.
What are the alternatives?
If retreatment is not possible, endodontic surgery may be. The only other option is removing the tooth and replacing it with an implant, bridge or partial denture, which costs more, takes longer and can involve neighboring healthy teeth. Nothing is as good as your own natural tooth.
Adapted from patient information by the American Association of Endodontists. Every tooth is different; Dr. Warren will explain what applies to yours at your exam.