Endodontic success is built step by step. While shaping, cleaning, and obturation are fundamental, long-term outcomes can ultimately depend on one critical factor: the coronal seal. Without a reliable seal coronally, even the most carefully performed root canal treatment can be compromised.

Preventing bacterial recontamination from the oral environment is essential for maintaining the integrity of the root canal system and supporting periapical healing. A durable coronal seal protects the clinician’s endodontic investment and plays a decisive role in the longevity of the treated tooth.

Why coronal seal matters

Once access is gained, the pulp chamber becomes a potential pathway for bacterial ingress. Research has shown that coronal leakage can occur rapidly if sealing is delayed or inadequate. Marginal gaps, temporary restorations, or materials that do not bond predictably can all allow contamination to reach the canal system, increasing the risk of post-treatment disease.

A predictable coronal seal should provide the following:

  • Minimise bacterial penetration and microleakage
  • Protect the obturation and canal system
  • Support periapical healing
  • Enhance long-term restorative success

For these reasons, coronal sealing should be considered an integral part of the endodontic workflow.

Improve coronal seal with proven root to crown workflow solutions

Dentsply Sirona supports a system-based approach to endodontic treatment, offering integrated solutions designed to work together seamlessly from access through to final restoration. By aligning shaping, obturation and restoration, clinicians can reduce complexity and improve predictability.

At the shaping stage, WaveOne Gold continues to set the standard. Now celebrating 10 years of clinical success, this single-file reciprocating system has earned the trust of clinicians worldwide. Its gold heat-treated alloy delivers enhanced flexibility and resistance to cyclic fatigue, enabling efficient shaping while respecting canal anatomy.

After a decade of use, WaveOne Gold remains a proven choice because it consistently delivers reliable results. Predictable shaping creates the ideal foundation for effective irrigation, obturation and, critically, a durable coronal seal.

SDR: 15 years of proven performance

Once obturation is complete, immediate and effective coronal sealing is essential. For 15 years, SDR has been a trusted solution for clinicians seeking a predictable, durable coronal seal following endodontic treatment.

SDR flow+ is a bulk-fill flowable composite engineered to significantly reduce polymerisation stress, one of the key contributors to marginal breakdown and microleakage. By helping maintain the integrity of the adhesive interface, it supports a tight, long-lasting seal over the pulp chamber and canal orifices.

Key benefits of SDR flow+ include:

  • Low polymerisation stress, helping to reduce gap formation
  • Excellent flow and adaptation to complex cavity anatomy
  • Bulk-fill placement up to 4 mm for efficient workflows
  • Radiopacity for easy post-operative evaluation

By flowing intimately into internal irregularities, SDR flow+ helps seal potential pathways for bacterial ingress, protecting the root filling and supporting long-term endodontic success.

Immediate coronal seal as a standard of care

Evidence increasingly supports the placement of an immediate definitive coronal seal following obturation. Delays can expose the canal system to contamination, undermining treatment outcomes. SDR enables clinicians to place a reliable core build-up efficiently, even prior to full cuspal coverage, helping safeguard the tooth during the restorative phase.

Used within an appropriate adhesive protocol and followed by a definitive restoration, SDR flow+ acts as a stress-absorbing foundation that protects both the tooth and the endodontic work beneath.

Tried and tested solutions

In dentistry, longevity matters. Products that stand the test of time do so because they deliver consistent performance in everyday clinical practice. WaveOne Gold, with 10 years of proven shaping success, SDR, celebrating 15 years of excellent bulk fill technology, and AH Plus, commemorating 30 years of clinical success, recognised for its long term sealing reliability, point to Dentsply’s commitment to evidence based innovation.

Together, they are designed to support a workflow focused on:

  • Efficient and conservative canal shaping
  • Predictable obturation
  • Immediate, durable coronal sealing

Coronal seal is one of the cornerstones of endodontic success. By choosing proven, system based solutions, clinicians can protect their work, reduce the risk of reinfection and deliver predictable long term outcomes.

With WaveOne Gold, AH Plus and SDR® flow+, Dentsply Sirona offers trusted solutions that have supported clinicians for decades, helping ensure that every root canal treatment is sealed for success.