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The endodontic file is a disposable instrument
R B Kazemi1, E Stenman, L S Spångberg
1Department of Restorative Dentistry and Endodontology, University of Connecticut Health Center, School of Dental Medicine, Farmington 06030-1715, USA.
Journal of Endodontics
|September 1, 1995
Summary
Endodontic files rapidly wear down when cutting human dentin, with significant differences among brands. This study suggests that disposable endodontic files are a practical solution for consistent dental procedures.
Area of Science:
- Dental materials science
- Biomaterials engineering
- Endodontics
Background:
- Tool wear is a common issue in machining processes.
- The wear characteristics of endodontic files on human dentin are not well understood.
- Previous studies indicated variable file efficiency on artificial substrates like Plexiglas.
Purpose of the Study:
- To investigate and understand the wear patterns of endodontic files during machining of human dentin.
- To compare the wear performance across different brands and types of endodontic files.
Main Methods:
- Evaluation of seven distinct brands and types of endodontic files.
- Machining tests were conducted using human dentin as the substrate.
- Analysis of file deterioration and efficiency decline during the process.
Main Results:
- All tested endodontic files exhibited rapid deterioration when machining human dentin.
- A significant decline in file efficiency was observed.
- The rate and extent of wear varied significantly both within and among different file brands.
Conclusions:
- Endodontic files demonstrate substantial wear when used on human dentin.
- The variability in wear suggests inconsistencies in performance.
- The findings support the recommendation for endodontic files to be treated as disposable items.