Root canal treatment is designed to remove infection from inside a tooth, clean and seal the root canal system, and preserve the natural tooth. When properly diagnosed, planned and performed, root canal treatment has a high rate of success. However, the outcome can vary depending on the condition of the tooth, the complexity of the root canal system, the quality of treatment and the restoration placed afterward. This guide explains the root canal treatment success rate, what can cause treatment failure and what options may be available if a previously treated tooth develops problems.
According to the most credible academic studies, an endodontics success rate of 89% to 94% should be expected from conventional root-canal therapy. Only about five percent of root canals actually fail, and sometimes it is not actually a βfailure.β In cases, of teeth that have more than one root, it is possible that only one root was infected and filled.
Who Is This Article For?
- Patients considering root canal treatment
- Patients worried about whether a root canal will work
- People who have already had a root canal
- Patients experiencing symptoms after root canal treatment
- People wondering whether retreatment is possible
- Patients deciding between saving a natural tooth and extraction
What is a Root Canal?
A root canal is a procedure that removes the nerve and bacteria-containing pulp from inside the root of a tooth. This is done to fix an infected or decayed tooth. Infections inside the tooth can be caused by bacteria entering through a cavity and growing inside the pulp of the tooth. A root canal procedure is done to clean the inside of the tooth and remove the infected pulp. The pulp of a tooth is made up of blood vessels and live nerve tissue. This tissue is what causes pain when a tooth is infected or decayed. If the pulp is not removed, the infection will spread inside the tooth and eventually lead to the death of the tooth.
Why is root canal treatment needed?
Root canal treatment is usually needed when a tooth becomes infected. Infections are often caused by tooth decay, deep dental procedures, or trauma to the mouth. Infected teeth usually donβt hurt. Instead, the infection may cause a toothache, swelling, bad breath, swelling in the gums, or pus coming out of the tooth.
If you have one or more affected teeth, you should visit the dentist as soon as possible. Left untreated, an infected tooth can cause serious health problems. A tooth that has been decayed or infected may need to be removed. Your dentist might recommend root canal treatment to save the tooth.
What happens during Root Canal Treatment?
Root canal treatment is a common procedure thatβs used to treat a diseased or injured tooth. If a tooth has become infected or decayed to the point where it is beyond saving, then a root canal is recommended. A dentist or oral surgeon (depending on where the tooth is located) will then remove the damaged pulp and fill the root canal with a special material to stop the infection from spreading.
Root canal treatment may sound scary, but modern dentists have perfected the procedure so that it is both highly effective and relatively pain-free. First, your dentist will administer a local anesthetic and numb the area to minimize pain. The tooth will then be thoroughly cleaned, and the pulp removed. Finally, the root canal will be cleaned, filled with a special material, and sealed off with a filling or dental crown.
Root Canal Treatment Success
Root canal treatment is intended to be permanent. Success is likely if it is carried out by a qualified professional. Before recommending root canal treatment, clinicians need to confirm the diagnosis of infection and assess the extent of the damage. This helps them to determine how best to proceed with the treatment. Treatment success is usually determined by the absence of symptoms. However, there are different methods to measure success.
The rate of success for root canal treatment is about 98%. This means that about 98 out of 100 people who undergo this procedure are successfully treated. Success is more likely if the treatment is carried out early before the infection spreads. The success ratio is also higher if the procedure is done with modern techniques by a clinician who is well-trained in this procedure.
Limitations of Root Canals and Alternative treatments
If the diagnosis is correct, then root canal treatment is nearly always successful. However, there are some limitations to root canal treatment. Success is more likely in non-aggressive lesions. Less fortunate are individuals with complicated or aggressive lesions. Root canal treatment is not always possible in cases of advanced infection. This is especially true with teeth that have had multiple root canals.
There are also no guarantees when it comes to chronic infections. These types of infections are often challenging to treat because the bacteria are highly resistant and difficult to eliminate. Root canal therapy has a lower success ratio in teeth that experience recurrent episodes of apical periodontitis, teeth with a thin periodontal ligament, teeth with a high percentage of secondary deposits, teeth with fractures, and teeth with periapical bone sclerosis.
Conclusion
Root canal treatment is an established way of treating infection or inflammation inside a tooth while preserving the natural tooth. Its success depends on factors such as the diagnosis, tooth anatomy, extent of infection, quality of cleaning and sealing, and the final restoration. Although root canal treatment can sometimes fail, retreatment or other procedures may allow the tooth to be preserved in selected cases. If you are experiencing pain or other symptoms after a root canal, a dental examination can help determine the cause and the appropriate next step.
Frequently Asked Questions
What is the success rate of root canal treatment?
Root canal treatment generally has a high success rate, but there is no single percentage that applies to every tooth. Outcomes vary depending on diagnosis, tooth anatomy, infection, treatment quality, restoration and follow-up period.
Can a root canal fail years later?
Yes. A previously treated tooth can develop new decay, leakage, fracture or persistent/recurrent infection. A dental examination is needed to identify the cause.
What happens if a root canal fails?
Depending on the condition of the tooth, options may include root canal retreatment, endodontic surgery or extraction.
Is extraction better than root canal treatment?
Not necessarily. If a natural tooth can be predictably treated and restored, preserving it may be considered. The appropriate option depends on the tooth’s condition and the patient’s circumstances.
Can a root canal last a lifetime?
A root-treated tooth can remain functional for many years, but no specific lifespan can be guaranteed. Proper restoration, oral hygiene and regular dental care can help maintain it.
Suggested Article β
- Pros and Cons of Full Mouth Dental Implants
- Difference between Crowns and Dental Implants?
- Who is the Best Dental Implant Specialist
Medical Disclaimer
This article is for patient education only. Dental treatment should be planned after clinical examination, medical history review, and X-rays or scans where required. Treatment suitability, cost, timeline, healing, and results vary from patient to patient.
