Canal preparation using two mechanical handpieces: distortions, ledging, and potential solutions

Area of Science:

• Endodontics
• Dental Materials Science

Background:

• Curved root canal preparation presents challenges in endodontic treatment.
• Mechanical handpieces are utilized for efficient canal preparation.
• Ledge formation is a common complication during root canal preparation.

Purpose of the Study:

• To compare the efficacy of the Giromatic and Kerr M-4 mechanical handpieces in preparing curved root canals.
• To identify and describe methods for minimizing ledge production during canal preparation.

Main Methods:

• Preparation of simulated curved root canals in plastic blocks.
• Utilized two distinct mechanical handpieces: Giromatic and Kerr M-4.
• Qualitative assessment of canal preparation outcomes, focusing on distortions.

Main Results:

• The Giromatic handpiece demonstrated generally superior performance compared to the Kerr M-4.
• Both handpieces resulted in the formation of ledges and other canal distortions.
• Specific techniques were observed to influence the degree of canal distortion.

Conclusions:

• The Giromatic handpiece may offer advantages for curved canal preparation over the Kerr M-4.
• Ledge formation remains a concern with both tested mechanical systems.
• Implementing specific procedural modifications can mitigate undesirable canal preparation outcomes.