Cases I Take On That Others Don't.

John Barclay
4 days ago
4 min read

By Dr John Barclay | GDC No. 210844 | DRJB Smile Clinic, Ruabon, North Wales

There has been no hospital restorative consultant covering this region since 2013. That gap doesn't disappear. It relocates — into general practice, into private referral clinics, and into the hands of clinicians who've had to develop the skills to fill it.

Over the last decade, that's what I've done. What follows is an honest account of the case types I accept that often come back to me after being declined elsewhere.

Calcified Canals

Radiographically absent canals are not the same as absent canals. Under the operating microscope, with appropriate lighting and magnification, the majority of calcified canals that appear on a periapical as white space contain a negotiable pathway.

The technique is slow. It requires patience, light instrumentation, and a willingness to spend time at a magnification most GDPs don't have access to. I've found and negotiated canals in teeth that had been told couldn't be treated. Not always — but often enough that a CBCT and a proper assessment is nearly always worth having before extraction is discussed.

If you have a tooth with calcified canals and a patient who wants to keep it, refer it before the extraction conversation happens.

Cracked Tooth Syndrome

Diagnosis is the hard part. Cracked tooth syndrome presents inconsistently, often mimics other conditions, and is routinely missed or mismanaged — not through negligence, but because the diagnostic tools available in a standard surgery make it genuinely difficult to confirm.

I use transillumination, staining, and selective anaesthesia alongside microscope examination to characterise the crack — its extent, its location relative to the pulp and periodontal ligament, and whether the tooth is salvageable. The answer isn't always yes. But it deserves a proper answer before the tooth is lost.

The case that once sat in a waiting room undiagnosed is now the kind of case I see most weeks. Complex, ambiguous, under-diagnosed, frequently referred late. Early referral gives the tooth its best chance.

Failed Root Canal Treatment

Not all failed RCT is the same, and not all of it is retreatable to a meaningful prognosis. I assess rather than assume. With CBCT available in-house, I can characterise the original failure — missed canal, inadequate density, perforation, fracture — before committing to a treatment plan.

When retreatment is indicated and the tooth is restorable, I do it under the microscope with NiTi rotary systems throughout. When it isn't, I'll tell you clearly why, and what the alternatives are.

The referral that comes to me after a GDP has attempted retreat and run into difficulty is a harder case than the one that comes before. Early is always better.

Separated Instruments

The presence of a separated instrument in a canal does not automatically mean the tooth is lost. It does mean the case requires assessment before a decision is made.

I approach each case on its specific merits: the position of the fragment, patency beyond it, periapical status, restorability. Retrieval is one option. Bypassing is another. Leaving in situ with appropriate sealing is sometimes the right call. I won't attempt retrieval where the risks outweigh the benefit — but I also won't recommend extraction without a proper case assessment.

Complex Restorative Cases

The region has had limited access to specialist-level restorative care for over a decade. As a result, I see cases that in other areas would have been managed by a consultant — full-arch rehabilitation, heavily broken-down dentitions, complex crown and bridge planning, cases sitting at the intersection of endo and restorative where the treatment sequence matters as much as the individual procedures.

I work in collaboration with your practice where possible. The patient returns to you. You retain the relationship. I provide the clinical component and a written report.

A Note on Referral Timing

The cases above are all more manageable when they arrive early. A calcified canal referred before any instrumentation. A cracked tooth referred before it fractures to the gum line. A failed RCT referred before a second attempt has introduced new complications.

If you're uncertain whether a case is within scope — yours or mine — contact me before you start. That conversation has no cost and occasionally prevents a significant one.

📞 01978 823490

📧 infodesk@drjbsmileclinic.co.uk

References & Further Reading

1. Patel S et al. The detection and management of root resorption lesions using intraoral radiography and cone beam computed tomography — an in vivo investigation. International Endodontic Journal, 2009. → Supports CBCT use in complex case assessment prior to retreatment decisions.

2. Krell KV, Rivera EM. A six year evaluation of cracked teeth diagnosed with reversible pulpitis: treatment and prognosis. Journal of Endodontics, 2007. → Key evidence base for cracked tooth diagnosis, management decisions and prognostic outcomes.

3. Torabinejad M et al. Outcomes of nonsurgical retreatment and endodontic surgery: a systematic review. Journal of Endodontics, 2009. → Supports the treat/extract decision framework for failed RCT cases.

4. Suter B et al. Factors influencing the removal of separated instruments. International Endodontic Journal, 2005. → Evidence base for the nuanced decision-making around separated instrument management.

5. European Society of Endodontology. Quality guidelines for endodontic treatment: consensus report. International Endodontic Journal, 2006 (updated 2019). → Defines the standards against which complex endodontic case management should be benchmarked.