Top 3 Causes for Root Canal Treatment Failure
Root canal treatment is a complex endodontic procedure. However, similar to any dental or medical procedure, there are potential risks and complications. Let’s have a look at the possibility and the causes for root canal failure.
Namely, there are several reasons as to why the root canal treatment can fail.
Reason 1: Accessory (Undetected) Root Canal
This is usually the most common reason for a root canal failure. Most root canals are expected to have just one canal, but some teeth might have extra canals branching out from the main canal. These extra canals are very tiny and difficult to be detected even by a trained endodontist.
If these extra canals are not found and treated, the root canal will eventually become reinfected. This leads to the failure of the root canal treatment, resulting in tooth abscess.
Reason 2: Cracks & Fractures in the Tooth
After the root canal treatment is completed, there is a risk that the tooth can crack or fracture. These cracks create gaps and spaces, which could lead to the formation and the growth of bacteria. Unfortunately, it is impossible for dentists to treat and seal the cracks.
This results in reinfection of the tooth. Most tooth cracks are not visible even on a dental X-ray. Such cracks would usually necessitate the extraction of the tooth, even after the root canal treatment has been completed.
Reason 3: Erosion of Root Canal Seal
With age, the seal used during the root canal treatment erodes and breaks down. This results in n bacteria re-entering the root canal, causing the tooth to be infected.
The most common symptom for this is a constant irritation in the gums and the tissues that are surrounding the root of that tooth.
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