Each year, millions of people undergo root canal treatment to relieve severe tooth pain and save teeth that might otherwise require extraction due to infection.


Root canals are highly successful, with a success rate of 86–98%. However, like any medical procedure, they can occasionally fail due to several reasons—most commonly, a lingering infection caused by incomplete cleaning or sealing of the root canal, or not following post-treatment care instructions.


Recognizing the signs of root canal failure is important for timely treatment and preventing further complications.


Signs of a Failed Root Canal

Contact your dentist right away if you notice any of the following signs that may indicate your root canal didn’t work or that an infection has developed: (2)


  • Severe, persistent tooth pain, especially when biting or chewing
  • (Note: Some mild to moderate discomfort is normal for a few days after the procedure, but ongoing or intense pain that interferes with eating or speaking should not be ignored.)
  • Swelling or tenderness in the gums around the treated tooth
  • Pus-filled abscess near the tooth root or gums
  • Tooth discoloration
  • Swelling in the face or neck near the affected tooth
  • Sensitivity to hot, cold, or pressure that lasts long after the procedure
  • Bad breath or a foul taste in the mouth (3)


What Should You Do?

If you experience any of these symptoms after a root canal, see your dentist as soon as possible. (3)


Keep in mind that signs of failure may not appear right away—they can develop weeks, months, or even years later. (1)


Your dentist will likely examine the tooth, take an X-ray, and determine whether an infection or other issue is present at the root. If needed, they’ll suggest the appropriate treatment to prevent the condition from worsening. (3)


Treatment Options for Root Canal Failure

Your dentist may recommend one of the following options if the original root canal fails or if inflammation persists: (2)(4)


  • Root Canal Retreatment: The dentist will reopen the tooth, clean out the root canal system again, and reseal it.
  • Apicoectomy (Root-End Surgery): A minor surgical procedure to remove the infected tip of the tooth root.
  • Tooth Extraction: If the tooth is too damaged and other treatments are not successful, the dentist may remove the tooth and replace it with a dental implant or bridge.


Post-Root Canal Care Tips

Proper aftercare is essential for recovery and long-term success. Here are a few tips: (5)

  • Stick to soft foods for the first few days—like mashed potatoes, yogurt, smoothies, and cottage cheese.
  • Avoid chewing on the treated tooth until fully healed; use the other side of your mouth.
  • Stop smoking, even temporarily, to promote healing.
  • Brush and floss regularly to keep your teeth clean.
  • Use an antibacterial mouthwash to reduce the risk of infection.


Why Choose Al-Ahli Hospital’s Dental Clinics?

  • Expertise in Root Canal Treatments: Our skilled dental team is highly experienced in handling complex root canal cases.
  • 24/7 Dental Services: We’re here whenever you need us—even for emergencies or sudden pain.
  • Advanced Technology: We use state-of-the-art tools and equipment to ensure precise diagnosis and effective treatment.
  • Modern and Comfortable Clinics: Designed for your comfort, our clinics provide a welcoming and soothing environment.
  • Affordable Care: We offer top-quality dental services at reasonable prices—without compromising on care.





Book your appointment today at Al-Ahli Hospital Dental Center and enjoy a healthy, pain-free smile!




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