An Overview of Thermomechanically Heat-treated Nickel&amp;ndash;Titanium Alloy Used in Endodontics

Ashok, Loganathan; Krishnan, Vineesh; Nair, Rajesh Sasidharan; Angelo, Mano Christaine

doi:10.5005/jp-journals-10048-0047

Cited by 2 publications

(3 citation statements)

References 22 publications

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“…Since the Ni‐Ti file was first introduced in the endodontic field by Walia [18], it has been widely used because of its superelasticity and flexibility [6]. Recently introduced heat‐treated Ni‐Ti instruments have shown improved fracture resistance and mechanical properties and have been used frequently [7]. However, we found only one study that reported the accuracy of EALs with heat‐treated Ni‐Ti files [11].…”

Section: Discussionmentioning

confidence: 99%

“…If the temperature is above the austenitic finish (Af) temperature, the alloy exists in an austenitic state. Upon cooling, if the temperature is below the martensitic finish temperature (Mf), the alloy exists in the martensitic phase [7]. For example, the Af temperature of ProTaper Universal (Dentsply Maillefer, Ballaigues, Switzerland) is approximately 15°C and it exists in an austenitic state at room temperature [8].…”

Section: Introductionmentioning

confidence: 99%

“…HyFlex EDM (Coltene/Whaledent AG, Altstatten, Switzerland) files are manufactured using a unique manufacturing process called electrical discharge machining (EDM) [9]. The Af temperature of the file is approximately 52°C [7]; thus, it remains martensitic at room temperature than the conventional Ni‐Ti files, making the files extremely flexible and fracture‐resistant [10].…”

Section: Introductionmentioning

confidence: 99%

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Accuracy of electronic apex locators using heat‐treatedNi‐Tifile

Heo

Hwang

2022

Aust Endodontic J

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This study investigated the accuracy of two electronic apex locators (DentaPort and Bingo) using heat‐treated nickel‐titanium files. The true root canal length of 30 single‐rooted teeth was determined using K files. Next, the electronically measured length was determined using two nickel‐titanium files (ProGlider and HyFlex EDM Glide Path File) with two electronic apex locators at the ‘APEX’ marks. The accuracy of the electronic apex locator was evaluated by comparing the true root canal length and electronically measured length for each measurement. There was no significant difference between the measurements with two nickel‐titanium files, and all differences between true root canal length and electronically measured length were within ±0.5 mm regardless of the type of nickel‐titanium files or electronic apex locators. Based on the results, the heat treatment of the nickel‐titanium files showed no adverse effects on the working length determination using electronic apex locators.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Accuracy of electronic apex locators using heat‐treatedNi‐Tifile

Heo

Hwang

2022

Aust Endodontic J

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Beş Farklı Nikel-Titanyum Döner Eğe Sisteminin Yapay Kanallarda Şekillendirme Etkinliklerinin Karşılaştırmalı Olarak Değerlendirilmesi

BİLGİN

Altunbaş

2022

Cumhuriyet Dental Journal

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Objectives: The aim of this study was to compare the simulated canal shaping efficiencies of five different NiTi rotary file systems. Materials and Methods: In the study, 100 transparent resin blocks with J-shaped canals were randomly divided into five groups (n=20). Simulated canals were shaped with VDW.Rotate (VR), TruNatomy (TRN), HyFlex CM (HF), EdgeFile X7 (EF), or ProTaper Next (PTN) files. Ten measuring points were detected on the pre- and post-preparation images taken from the blocks and superimposed. After preparation, the total canal width and the amount of transportation were calculated for the determined measuring levels. Zipping and ledge formation, instrument fracture and deformation, and change in working length were evaluated. The data were statistically analyzed with the Kolmogorov-Smirnov test, one-way ANOVA, Tukey test, Chi-Square test, and a Monte Carlo version of the Fisher Exact tests. The error level was taken as 0.05. Results: There were significant differences between the groups at all measuring levels in terms of total canal width after instrumentation (p = 0.001). Significant differences in the amount of transportation were found between the groups (p = 0.001) except at levels 4 (p = 0.169) and 10 (p = 0.054). Zip and instrument fractures did not occur in any group. 3 EF size 25/.04 files were deformed (p = 0.021). There was no significant difference between the groups in terms of ledge formation and working length change (p > 0.05). Conclusions: According to findings obtained in the study, transportation occurred at all 10 measuring levels with all file systems used. HF and EF systems were found to be more reliable in terms of transportation in the middle and coronal regions. Wider canal preparation was obtained with the PTN system in the middle and coronal regions.

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An Overview of Thermomechanically Heat-treated Nickel–Titanium Alloy Used in Endodontics

Cited by 2 publications

References 22 publications

Accuracy of electronic apex locators using heat‐treatedNi‐Tifile

Accuracy of electronic apex locators using heat‐treatedNi‐Tifile

Beş Farklı Nikel-Titanyum Döner Eğe Sisteminin Yapay Kanallarda Şekillendirme Etkinliklerinin Karşılaştırmalı Olarak Değerlendirilmesi

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