CBCT-Guided Root Canal Retreatment in Finchley

Retreatment is needed when a tooth that has already had root canal therapy becomes reinfected or fails to heal. This can occur months or even years after the initial procedure. You should seek an assessment if you notice symptoms such as lingering pain, sensitivity to hot or cold, tenderness when chewing, or a small pimple-like bump on the gum near the tooth. Sometimes there are no symptoms, and the problem is only detected on a routine dental x-ray. The primary goal is to resolve the infection and save the tooth from extraction. Common causes of failure include complex or missed canals, new decay that allows bacteria to enter the tooth, or a cracked or loose filling or crown.

A standard 2D x-ray offers a limited view, which can hide parts of a complex root canal system. A CBCT scan changes this by creating a detailed 3D model of your tooth, roots, and surrounding bone. This is valuable for retreatment because it reveals details that are otherwise invisible, such as: Undiscovered canals a tiny hidden canal often causes retreatment failure. CBCT imaging shows the exact number and location of all canals. Complex anatomy unusual curves or branches in the root structure become clear. Vertical root fractures tiny cracks that can be hard to spot on 2D x-rays can be confirmed or ruled out with CBCT, guiding the treatment plan. Case Example 1: A patient from Finchley had persistent pain after a molar treatment years earlier. A standard x-ray was inconclusive. Our CBCT scan showed a fourth untreated canal in the molar harbouring bacteria, enabling a successful retreatment and complete symptom relief.

The process starts with a 60 minute consultation that includes the CBCT scan to diagnose the problem and assess whether saving the tooth is possible. If you proceed, retreatment unfolds over one or two appointments, each lasting 60 to 90 minutes. First, under local anaesthetic, we open the tooth to access its interior. Then we use a dental operating microscope to remove the old root filling material. The canals are cleaned, disinfected, and reshaped to remove remaining infection. Finally, the canals are filled and sealed with a biocompatible material. A temporary filling is placed, and you return to your general dentist for a permanent crown to protect the tooth long term.

After the procedure you may feel tenderness for 2 to 4 days. Over the counter pain relief such as ibuprofen can help. Eat soft foods and avoid chewing directly on the treated tooth until tenderness eases and the permanent crown is in place. Keep your normal brushing and flossing around the area. Red flags include severe or increasing pain after day 3, swelling that spreads to the face, or a fever. If you have an emergency outside office hours, call 111 or go to the nearest A&E.

While our focus is keeping your natural tooth, retreatment is not always the best option. Apicoectomy or root-end surgery may be advised when infection sits at the root tip. If retreatment is not feasible, extraction may be the most predictable option. The missing tooth can then be replaced with a dental implant, bridge, or partial denture. Case Example 2: A patient from Golders Green was referred for retreatment. Our CBCT scan showed a clear vertical root fracture along the root. In that case retreatment would have a low chance of success. We discussed the findings and recommended extraction with an implant as the best long-term solution, avoiding a failing treatment. During your consultation we will review the prognosis for your tooth and help you weigh the options.

Root canal retreatment costs more than an initial root canal because of its complexity and the use of advanced technology such as the CBCT scan and operating microscope. The final fee depends on the tooth involved and how difficult the case is. You will receive a full quote after the initial consultation and CBCT assessment. Our practice is private and does not offer NHS services. We accept private dental insurance plans including Max Bupa, Denplan, and Cigna. Please bring your policy details to your appointment so we can help with paperwork.

To choose what fits you best, ask providers these questions during your Finchley visit or elsewhere: What is the likely success rate for retreatment in my case Do you use a CBCT scanner and dental microscope for retreatments What did you identify as the cause of the first treatment failure What are the full costs including consultation CBCT and treatment What happens if the retreatment fails What are your qualifications and experience with complex retreatment cases Will I need a new crown afterwards and is that included in the fee