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Dynamic Navigation in Endodontics: Guided Access Cavity Preparation by Means of a Miniaturized Navigation System

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Comparative analysis of endodontic pathfinders.

Michael J Allen¹, Gerald N Glickman, Jason A Griggs

¹Department of Endodontics, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, Texas 75246, USA.

Journal of Endodontics

|May 19, 2007

Summary

This study compared ten endodontic pathfinder files, finding Pathfinder SS, S finder, and D finder most efficient. File flexibility varied, with Pathfinder CS and SS being the most flexible endodontic instruments.

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Area of Science:

Endodontics
Dental Materials Science

Background:

No prior scientific literature exists on endodontic pathfinder instruments.
Endodontic pathfinders are crucial for navigating complex root canal anatomy.

Purpose of the Study:

To compare dimensional characteristics, rigidity, efficiency, wear, and distortion of ten different endodontic pathfinder files.
To evaluate the influence of various file properties and operator skill on canal negotiation efficacy.

Main Methods:

Analysis of dimensional characteristics (pitch, taper) and rigidity.
In vitro simulation exercise assessing efficiency, wear, and distortion in S-shaped canals.
Scanning Electron Microscopy (SEM) for cross-section and tip imaging.
Operator-based assessment of canal patency achievement.

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Main Results:

Pathfinder SS, S finder, and D finder demonstrated the highest efficiency in canal negotiation.
Hi-5 and C+ files exhibited the least flexibility; Pathfinder CS and SS files were the most flexible.
File efficiency was influenced by pitch, taper, cross-section, heat treatment, metal type, tip geometry, and operator skill.

Conclusions:

Specific endodontic pathfinder designs significantly impact efficiency and flexibility.
Material properties, design features, and operator technique are critical factors in successful root canal negotiation using pathfinder files.