Navigating Complexity: A Structured Endodontic Instrumentation Sequence for Severely Curved Mandibular Molars - Summary - DentalSpire

Navigating Complexity: A Structured Endodontic Instrumentation Sequence for Severely Curved Mandibular Molars

  • July 1, 2026

  • 3 min

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Objective:

To document nonsurgical root canal treatment in two patients diagnosed with symptomatic irreversible pulpitis and symptomatic apical periodontitis, focusing on a structured instrumentation sequence for severely curved mandibular molars.

Approach:
  • Case 1: Tooth No. 17 with a 75-degree distal root curvature; treatment involved EdgeOnyx instrumentation using X-Find, X-Follow, and X-Finish files, along with laser-activated irrigation.
  • Case 2: Tooth No. 18 with distal root curvature ranging from 60 to 75 degrees; similar EdgeOnyx instrumentation and laser-activated irrigation methods were employed.
Key Findings:
  • EdgeOnyx geometry enables controlled shaping in canals with curvatures exceeding 60 degrees.
  • The rotary NiTi file system features a minimally invasive design and follows a Triflex sequence.
  • The sequential four-file protocol maintains canal anatomy while achieving adequate master apical file sizes for bioceramic sealer flow.
  • EdgeBioCeramic ThermalFlow combined with EdgePRO laser activation achieves predictable 3-dimensional obturation.
Interpretation:

The structured instrumentation sequence demonstrates effectiveness in managing complex canal anatomy while preserving morphology.

Conclusion:

The cases illustrate a conservative shaping approach in managing severely curved mandibular molars.

Original Source(s)

Navigating Complexity: A Structured Endodontic Instrumentation Sequence for Severely Curved Mandibular Molars

  • July 1, 2026

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