SEM Observations and Differential Scanning Calorimetric Studies of New and Sterilized Nickel-Titanium Rotary Endodontic Instruments

Scanning electron microscopy (SEM) and differential scanning calorimetric (DSC) studies were utilized to investigate surface and microstructure of two brands of rotary nickel-titanium (NiTi) endodontic instruments, in the as-received condition and after subjection to 1, 6, and 11 sterilization cycle...

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Published inJournal of endodontics Vol. 32; no. 7; pp. 675 - 679
Main Authors Alexandrou, Georgia B., Chrissafis, Konstantinos, Vasiliadis, Leonidas P., Pavlidou, Eleni, Polychroniadis, E.K.
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.07.2006
Subjects
Analysis of Variance
Calorimetry, Differential Scanning
Dental Alloys
Dental Instruments
Dental Stress Analysis
Dentistry
DSC
Elasticity
Equipment Reuse
Flexmaster
Hot Temperature
Microscopy, Electron, Scanning
Nickel
Nickel-titanium endodontic instruments
ProFile
Root Canal Preparation - instrumentation
Sterilization
Surface Properties
Titanium
Flexmaster
ProFile
Nickel-titanium endodontic instruments
DSC
sterilization
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Abstract Scanning electron microscopy (SEM) and differential scanning calorimetric (DSC) studies were utilized to investigate surface and microstructure of two brands of rotary nickel-titanium (NiTi) endodontic instruments, in the as-received condition and after subjection to 1, 6, and 11 sterilization cycles. A total of 66 ProFile ( n = 33) and Flexmaster ( n = 33) files were examined. SEM observations indicated the presence of surface imperfections and adherent material in all new and sterilized instruments and an increase in surface roughness of the instruments that underwent multiple sterilizations. DSC measurements showed that the specimens of both brands, in the as-received condition and after 11 sterilizations, were completely austenite in the oral environment temperature, suggesting that they are capable of superelastic behavior in appropriate clinical conditions.
AbstractList Scanning electron microscopy (SEM) and differential scanning calorimetric (DSC) studies were utilized to investigate surface and microstructure of two brands of rotary nickel-titanium (NiTi) endodontic instruments, in the as-received condition and after subjection to 1, 6, and 11 sterilization cycles. A total of 66 ProFile ( n = 33) and Flexmaster ( n = 33) files were examined. SEM observations indicated the presence of surface imperfections and adherent material in all new and sterilized instruments and an increase in surface roughness of the instruments that underwent multiple sterilizations. DSC measurements showed that the specimens of both brands, in the as-received condition and after 11 sterilizations, were completely austenite in the oral environment temperature, suggesting that they are capable of superelastic behavior in appropriate clinical conditions.
Scanning electron microscopy (SEM) and differential scanning calorimetric (DSC) studies were utilized to investigate surface and microstructure of two brands of rotary nickel-titanium (NiTi) endodontic instruments, in the as-received condition and after subjection to 1, 6, and 11 sterilization cycles. A total of 66 ProFile (n = 33) and Flexmaster (n = 33) files were examined. SEM observations indicated the presence of surface imperfections and adherent material in all new and sterilized instruments and an increase in surface roughness of the instruments that underwent multiple sterilizations. DSC measurements showed that the specimens of both brands, in the as-received condition and after 11 sterilizations, were completely austenite in the oral environment temperature, suggesting that they are capable of superelastic behavior in appropriate clinical conditions.
Author Alexandrou, Georgia B.
Chrissafis, Konstantinos
Polychroniadis, E.K.
Vasiliadis, Leonidas P.
Pavlidou, Eleni
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Keywords Flexmaster
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sterilization
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Snippet Scanning electron microscopy (SEM) and differential scanning calorimetric (DSC) studies were utilized to investigate surface and microstructure of two brands...
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StartPage 675
SubjectTerms Analysis of Variance
Calorimetry, Differential Scanning
Dental Alloys
Dental Instruments
Dental Stress Analysis
Dentistry
DSC
Elasticity
Equipment Reuse
Flexmaster
Hot Temperature
Microscopy, Electron, Scanning
Nickel
Nickel-titanium endodontic instruments
ProFile
Root Canal Preparation - instrumentation
Sterilization
Surface Properties
Titanium
Title SEM Observations and Differential Scanning Calorimetric Studies of New and Sterilized Nickel-Titanium Rotary Endodontic Instruments
URI https://dx.doi.org/10.1016/j.joen.2006.01.003
https://www.ncbi.nlm.nih.gov/pubmed/16793479
https://search.proquest.com/docview/68566600
Volume 32
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