In many cases, the cavity in the tooth is very deep, and filling it is not likely to offer a permanent solution. Removing a tooth is not recommended in many cases, because there is always some risk of error, and some nerves may get damaged in the process. The location of the tooth can also make it difficult to remove some teeth, especially the upper back teeth.
Hence in many cases, the doctor will recommend a root canal to clean the root infection of the teeth since this will prevent extraction of the tooth. Typically the cost of a root canal is higher than a tooth extraction, yet many people prefer the root canal since there are more risks associated with tooth extraction, especially bleeding
After the root canal, the patient is not expected to have any dental problem for the tooth. Yet, some patients find that they have a tooth infection after a root canal. There are many reasons for tooth infection. One of the most common reasons was that the dentist was not careful enough while carrying out the root canal. The bacterial infection in the tooth was not removed completely, and it is reoccurring. The roots of the tooth are also expected to be completely sealed after the root canal. Yet in some cases, the sealing material could get damaged or have holes, allowing the bacteria to accumulate again.
Another major reason for tooth infection is that the tooth is broken or fractured after the root canal treatment. In some cases, the fracture in the tooth is not detected initially, yet over a period of time, it becomes bigger and more painful. A gum infection or problem can spread to the teeth in the vicinity, causing pain. Many experienced dentists are willing to guarantee that the patient will not face any kind of problem after the root canal for the tooth for at least a few years. Hence, patients who are experiencing a tooth infection should contact their dentist at the earliest.