Influence of Electrochemical Polishing on the Mechanical Properties of K3 Nickel-Titanium Rotary Instruments

Abstract Instrument fracture is a serious concern in endodontic treatment. Several studies have evaluated the influence of various factors on the fracture of nickel-titanium endodontic rotary instruments. The present study analyzes the influence of electrochemical polishing on flexural fatigue and t...

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Bibliographic Details
Published inJournal of endodontics Vol. 34; no. 12; pp. 1533 - 1536
Main Authors Barbosa, Fabiola Ormiga Galvão, MSc, Gomes, José Antônio da Cunha Ponciano, DSc, de Araújo, Marcos Cesar Pimenta, DSc
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.12.2008
Subjects
Acetic Acid - chemistry
Dental Alloys - chemistry
Dental Polishing - methods
Dentistry
Electrochemical polishing
Electrochemical Techniques
Endocrinology & Metabolism
endodontic instrument
Equipment Design
Equipment Failure
fracture
Humans
Hydrofluoric Acid - chemistry
Hydrogen-Ion Concentration
Materials Testing
Microscopy, Electron, Scanning
Nickel - chemistry
nickel-titanium
Nitric Acid - chemistry
Pliability
Root Canal Preparation - instrumentation
Rotation
Stress, Mechanical
Surface Properties
Titanium - chemistry
Torque
Torsion, Mechanical
Electrochemical polishing
nickel-titanium
endodontic instrument
fracture
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Summary:Abstract Instrument fracture is a serious concern in endodontic treatment. Several studies have evaluated the influence of various factors on the fracture of nickel-titanium endodontic rotary instruments. The present study analyzes the influence of electrochemical polishing on flexural fatigue and torsional properties of K3 nickel-titanium endodontic rotary instruments. New files and polished files were tested for flexural fatigue and for resistance to fracture by twisting. The t test was used to compare the groups for number of cycles, angle of rotation, and maximum torque necessary to fracture. No statistical difference existed between these groups. Scanning electron microscopy analysis showed no significant differences caused by electrochemical polishing between these groups. These results suggest that electrochemical polishing has no influence on resistance to fracture of K3 rotary instruments.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0099-2399
1878-3554
DOI:10.1016/j.joen.2008.08.023