Why do I need to redo a root canal?
Root canal treatment is also known as removing the nerve of the tooth. The pulp of the tooth is infected by bacteria and the tooth produces pain. Patients need to undergo root canal therapy if they want to be able to keep the tooth and continue to use it. In some cases, when the root canal is not completed, the pain in the tooth disappears due to inactivation of the pulp and the patient thinks the tooth is healed and does not return to the dental office again to have the tooth filled or a crown placed on it.
After a few months, the temporary filling material from the root canal will naturally fall off and bacteria will re-infect the root canal system, resulting in a failed root canal and the need to redo root canal.
First, the root canal system is very complex, with the presence of multiple tiny root canals (like a large tree trunk with many branches, and these branches are the lateral root canals). In some patients, the teeth have root canal calcification, and even the root canals are bent very badly. Dentists are limited by medical technology and equipment to accurately identify root canals in a timely manner.
The dentist may not be able to completely remove the tooth during the root canal procedure, or the tooth may not be properly filled. Even after the root canal has been completed, the patient may still experience pain in the tooth.
Secondly, root canal treatment is a complex procedure that requires the patient to make several visits to the dental office in order to complete the entire treatment. Sometimes patients do not follow the dentist’s instructions because of various reasons, such as moving house, busy work, or fear of seeing the tooth.
Finally, if the tooth is not properly cared for after the root canal is completed, or if the patient does not wear a proper crown, the tooth will crack again and bacteria will take advantage of the opportunity to infect the root canal system that has been treated and the patient will again experience pain.
For these reasons, the patient will need to have the root canal treatment redone.
Steps for redoing a root canal
●your doctor will give you an anaesthetic and then drill the tooth through a drill press.
●After the first root canal treatment, there is no pulp left in your tooth cavity, only the filling and root canal. Therefore, the dentist will need to remove the filling and root canal with the help of delicate equipment.
●the dentist cleans the cavity and puts in anti-inflammatory medication.
●The dentist fills the cavity with the root canal and filling.
●the dentist seals the tooth with the filling material.
Does the success rate of redoing root canals decrease?
Redoing a root canal is more difficult than the first treatment. Statistically, the success rate of the first root canal is 85-95%, and the success rate can be significantly improved by microscopy during the root canal procedure. The success rate of redoing the root canal decreases by 20% to only 74%.
This is because when re-treating a root canal, the dentist is faced with a more complex dental environment. If the dentist treats a different dentist twice, the dentist needs to re-evaluate the amount and material of the filling, which increases the chances of failure when redoing the root canal.