Canal Aberration Assessment in Simulated Root Canals: a Comparative Study

Area of Science:

• Endodontics
• Dental Materials Science

Background:

• Root canal preparation is a critical step in endodontic treatment.
• Rotary instrumentation systems aim to improve efficiency and safety.
• Evaluating new systems is essential for clinical practice.

Purpose of the Study:

• To compare the preparation time and incidence of canal aberrations using three different rotary systems: Endostar E5, Endostar E3, and T One File Gold.
• To assess the performance of these systems in simulated root canals by dentists without prior rotary instrumentation experience.

Main Methods:

• Ninety endodontic training blocks were divided into three groups (n=30 each).
• Dentists without prior rotary experience prepared blocks using Endostar E5, Endostar E3, or T One File Gold.
• Preparation time was recorded, and canal aberrations (ledge, instrument fracture) were analyzed post-procedure using a stereomicroscope.

Main Results:

• The T One File Gold system demonstrated significantly shorter preparation times compared to Endostar E5 and Endostar E3 (p < 0.05).
• No statistically significant differences in the type or number of procedural errors were found among the three systems when used by inexperienced operators.

Conclusions:

• All tested rotary systems showed similar rates of canal aberrations in simulated root canals among novice users.
• Single-file systems, like T One File Gold, offer a significant advantage in reducing root canal preparation time.