Comparative Evaluation of Dentinal Defects After Root Canal Preparation Using Various Nickel Titanium Files: An In...

Area of Science:

• Endodontics
• Dental Materials Science

Background:

• Root canal instrumentation can cause dentinal damage.
• Evaluating file systems for dentin preservation is crucial for successful endodontic outcomes.

Purpose of the Study:

• To compare the dentinal damage induced by three different nickel-titanium file systems: Hyflex EDM, ProTaper Next, and Waveone Gold.
• To determine the most effective file system for minimizing root dentin damage.

Main Methods:

• Mandibular first premolars with straight canals were instrumented using Hyflex EDM, Waveone Gold, and ProTaper Next.
• Dentinal flaws were analyzed post-instrumentation using stereomicroscopy after sectioning specimens.

Main Results:

• No significant difference in dentinal damage was observed in the coronal or apical thirds among the file systems.
• Hyflex EDM and ProTaper Next showed a significant difference in the middle third (p=0.016).
• Hyflex EDM exhibited the fewest cracks, particularly in the middle third, compared to Waveone Gold and ProTaper Next.

Conclusions:

• Hyflex EDM files are superior in minimizing dentinal damage compared to ProTaper Next and Waveone Gold.
• The study highlights Hyflex EDM's effectiveness in preserving root dentin integrity during endodontic procedures.