Canal-centering ability of two rotary file systems

Area of Science:

• Endodontics
• Dental Materials Science
• Biomedical Engineering

Background:

• Maintaining root canal anatomy is crucial for successful endodontic treatment.
• Nickel-titanium rotary files offer improved flexibility and cutting efficiency compared to stainless steel.
• Evaluating instrumentation techniques requires precise methodologies to assess canal preparation accuracy.

Purpose of the Study:

• To compare the canal-centering ability of two nickel-titanium rotary file systems.
• To assess the effectiveness of the Endodontic Cube as a novel tool for evaluating instrumentation techniques.
• To quantify root canal transportation using digital imaging analysis.

Main Methods:

• Ten mandibular molars with separate mesial canals were used.
• ProFile Ni-Ti .06 taper and ProFile GT rotary systems were employed in a crown-down manner.
• The Endodontic Cube mold facilitated sectioning and digital imaging for canal path analysis.

Main Results:

• Both nickel-titanium rotary file systems exhibited minimal canal transportation, with mean movement less than 0.15 mm.
• The ProFile Ni-Ti .06 taper and ProFile GT systems effectively maintained their centered position within the canals.
• The Endodontic Cube proved to be an effective device for comparative analysis of endodontic instrumentation techniques.

Conclusions:

• Both ProFile Ni-Ti and ProFile GT rotary file systems demonstrate excellent ability to preserve the original root canal morphology.
• The Endodontic Cube is a valuable and effective tool for research in endodontic instrumentation and canal preparation analysis.
• These findings support the use of advanced nickel-titanium rotary systems for predictable and anatomically sound root canal treatment.