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Root canal treatment at Clarendon Dental Spa in Leeds removes infected or inflamed pulp from inside a tooth, then cleans, disinfects and seals the canals to relieve pain and save your natural tooth, usually finished with a protective crown.
Root canal treatment at Clarendon is led by our endodontist, Dr Fadi Kreishan (MSc Endodontics, University of Manchester; MFDS Royal College of Surgeons), using microscope-enhanced technique and 3D imaging to give even complex or previously failed cases the best chance of success. Voted Dental Practice of the Year 2026 by real patients.

Root canal treatment removes infected or damaged pulp from inside a tooth, relieving pain and saving a tooth that might otherwise need extraction. Using modern rotary techniques and effective local anaesthesia, the procedure at our Leeds clinic is comfortable — most patients say it feels no different to having a filling.

Treatment is usually completed in one or two visits. Afterwards the tooth is sealed and often protected with a crown for long-term strength. Mild tenderness for a day or two is normal and settles with over-the-counter pain relief. We will give you clear aftercare guidance before you leave.
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We’re committed to delivering exceptional endodontic care by investing in the best equipment available. From microscope-enhanced treatment to modern digital imaging and high-precision instruments, every tool is chosen to improve accuracy, comfort and long-term results — combining state-of-the-art technology with expert clinical skill.
A dental microscope gives the clinician exceptional magnification and lighting, revealing fine details inside the tooth that are otherwise impossible to see. Hidden canals, cracks and complex anatomy can be identified and treated with far greater accuracy.
Better visibility means more precise cleaning, shaping and sealing of the root canal system, reducing the risk of missed infection or complications. Microscope-assisted root canal treatment offers more predictable, longer-lasting outcomes.
Microscopes are especially valuable for retreatments, calcified canals, unusual anatomy or locating separated instruments — allowing specialist-level care even in the most difficult situations.

Having root canal treatment carried out by an endodontist — a dentist with advanced training focused on the inside of the tooth — offers clear advantages in precision, comfort and long-term success, especially in complex or previously failed cases. Our endodontist, Dr Fadi Kreishan, holds an MSc in Endodontics from the University of Manchester and MFDS from the Royal College of Surgeons, and focuses on preserving natural teeth through precise, evidence-based treatment.
Endodontists concentrate on diagnosing and treating problems inside the tooth. This focus allows confident management of complex anatomy, retreatments, and curved or calcified canals that general treatment may not routinely cover — leading to more predictable outcomes.
Using microscopes, ultrasonics and high-precision instruments allows areas to be seen and treated that are invisible without magnification — meaning more thorough cleaning, fewer missed canals and higher long-term success rates.
Teeth with previously failed root canals, unusual anatomy or persistent infection benefit greatly from advanced endodontic care, helping preserve natural teeth that might otherwise be lost.

When a tooth has been heavily broken down by decay or a large old filling, there may not be enough tooth left to hold a crown after root canal treatment. In these cases we place a post and core — a small support anchored inside the treated root that rebuilds the foundation, so a strong, natural-looking crown can be fitted on top.
It’s a key step in giving a root-treated tooth the best long-term chance, and we’ll explain clearly whether your tooth needs one before we begin. Rebuilding heavily compromised teeth is a core part of Dr Kreishan’s restorative and endodontic work.

Not every root canal succeeds first time — sometimes infection or discomfort returns months or years later. Endodontic re-treatment gives that tooth a second chance: we carefully remove the previous root filling, clean and disinfect the canal system under magnification, and re-seal it to modern standards.
With a dental microscope and 3D imaging we can often find missed or calcified canals that are a common cause of a failed first attempt — frequently saving a tooth that would otherwise be lost. If you’ve been told a previously treated tooth is failing, it’s well worth an assessment before considering extraction.

We welcome referrals from dentists across Leeds and West Yorkshire for complex root canal, re-treatment and difficult cases — calcified or curved canals, perforations, separated instruments and previously failed treatments. Cases are managed by our endodontist, Dr Fadi Kreishan (MSc Endodontics, Manchester), using microscope-enhanced treatment and 3D imaging.
Your patient is always returned to you for their final restoration and ongoing care, and you’ll receive a full written report covering the procedure, imaging and recommendations — so follow-up is seamless and you keep the relationship with your patient. To refer a patient, use our dentist referral form.

THE BRAND PATIENTS TRUST

Dr Fadi Kreishan
July 4, 2026