Metallurgical characterisation and torsional resistance of blue thermomechanically treated nickel titanium instruments after simulated ex vivo retreatment procedure

To compare used and unused Reciproc Blue and Reciproc after retreatment, the instruments were used in the mesiobuccal canals of maxillary molars with curvature. The torsional resistances were tested and then unused instruments were subjected to XRD, DSC and microhardness tests. Student’s t, ANOVA an...

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Bibliographic Details
Published in:Australian endodontic journal 2022-04, Vol.48 (1), p.121-130
Main Authors: Kalyoncuoğlu, Elif, Keskin, Cangül, Keleş, Ali, Aydemir, Hikmet
Format: Article
Language:English
Subjects:
Alloys
Dental equipment
Dental Instruments
differential scanning calorimetry
Endodontics
Equipment Design
Humans
Materials Testing
microhardness
Nickel
Retreatment
Root Canal Preparation
Titanium
torsional resistance
X‐ray diffraction
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Summary:To compare used and unused Reciproc Blue and Reciproc after retreatment, the instruments were used in the mesiobuccal canals of maxillary molars with curvature. The torsional resistances were tested and then unused instruments were subjected to XRD, DSC and microhardness tests. Student’s t, ANOVA and Tukey’s tests were performed (α‐level 0.05). The torsional strength of used Reciproc Blue was not significantly different than unused ones (P > .05), while torsional strength of Reciproc decreased significantly (P 
ISSN:1329-1947
1747-4477
DOI:10.1111/aej.12584