Nickel-Titanium Rotary File Systems: What’s New?

ZAFAR, Kamil; TABASSUM, Sadia; UMER, Fahad

doi:DOI 10.14744/eej.2019.80664

Nickel-Titanium Rotary File Systems: What’s New?

Sadia TABASSUM, (Jinnah Medical and Dental College, Department of Operative Dentistry, Karachi, Pakistan)

Kamil ZAFAR, (Aga Khan University Hospital, Department of Surgery, Karachi, Pakistan)

Fahad UMER (Girilmemişş)

European Endodontic Journal

17 2

Yıl: 2019 Cilt: 4 Sayı: 3 Sayfa Aralığı: 111 - 117 Metin Dili: İngilizce DOI: DOI 10.14744/eej.2019.80664 İndeks Tarihi: 30-11-2020

Nickel-Titanium Rotary File Systems: What’s New?

Öz:

Ever since their introduction, nickel–titanium (NiTi) alloys have continued to revolutionize the field of endodontics. They have considerable advantages over the conventional stainless steel file in terms of mechanical properties. However, despite of their superior mechanical properties, NiTi alloys still pose some risk of fracture. Consequently, there has been considerable research conducted to investigate the mechanisms behind the occurrence of these procedural errors. Since the last decade, different proprietary processing procedures have been introduced to further improve the mechanical properties of NiTi alloys. These treatments include thermal, mechanical, electropolishing, and recently introduced electric discharge machining. The main purpose of these treatments is to impart a more martensitic phase into the files at normal body temperature, so that the maximum advantage of flexibility can be obtained. These heat-treated instruments also possess improved cyclic fatigue resistance when compared to conventional NiTi alloys. NiTi alloys can be subclassified as the instruments mainly containing austenitic phase (conventional NiTi, M-wire, R-phase), and those containing martensitic phase (controlled memory wire, ProTaper Gold, and Vortex Blue). Instruments based on austenitic alloys possess superelastic properties due to the stress-induced martensitic transformation. Contrary to this, martensitic alloys can easily be deformed due to phase transformation, and they can demonstrate the shape memory effect when heated. This review discusses the different phase transformations and heat treatments that the NiTi instruments undergo.

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Belge Türü: Makale Makale Türü: Derleme Erişim Türü: Erişime Açık

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APA	TABASSUM S, ZAFAR K, UMER F (2019). Nickel-Titanium Rotary File Systems: What’s New?. , 111 - 117. DOI 10.14744/eej.2019.80664
Chicago	TABASSUM Sadia,ZAFAR Kamil,UMER Fahad Nickel-Titanium Rotary File Systems: What’s New?. (2019): 111 - 117. DOI 10.14744/eej.2019.80664
MLA	TABASSUM Sadia,ZAFAR Kamil,UMER Fahad Nickel-Titanium Rotary File Systems: What’s New?. , 2019, ss.111 - 117. DOI 10.14744/eej.2019.80664
AMA	TABASSUM S,ZAFAR K,UMER F Nickel-Titanium Rotary File Systems: What’s New?. . 2019; 111 - 117. DOI 10.14744/eej.2019.80664
Vancouver	TABASSUM S,ZAFAR K,UMER F Nickel-Titanium Rotary File Systems: What’s New?. . 2019; 111 - 117. DOI 10.14744/eej.2019.80664
IEEE	TABASSUM S,ZAFAR K,UMER F "Nickel-Titanium Rotary File Systems: What’s New?." , ss.111 - 117, 2019. DOI 10.14744/eej.2019.80664
ISNAD	TABASSUM, Sadia vd. "Nickel-Titanium Rotary File Systems: What’s New?". (2019), 111-117. https://doi.org/DOI 10.14744/eej.2019.80664

APA	TABASSUM S, ZAFAR K, UMER F (2019). Nickel-Titanium Rotary File Systems: What’s New?. European Endodontic Journal, 4(3), 111 - 117. DOI 10.14744/eej.2019.80664
Chicago	TABASSUM Sadia,ZAFAR Kamil,UMER Fahad Nickel-Titanium Rotary File Systems: What’s New?. European Endodontic Journal 4, no.3 (2019): 111 - 117. DOI 10.14744/eej.2019.80664
MLA	TABASSUM Sadia,ZAFAR Kamil,UMER Fahad Nickel-Titanium Rotary File Systems: What’s New?. European Endodontic Journal, vol.4, no.3, 2019, ss.111 - 117. DOI 10.14744/eej.2019.80664
AMA	TABASSUM S,ZAFAR K,UMER F Nickel-Titanium Rotary File Systems: What’s New?. European Endodontic Journal. 2019; 4(3): 111 - 117. DOI 10.14744/eej.2019.80664
Vancouver	TABASSUM S,ZAFAR K,UMER F Nickel-Titanium Rotary File Systems: What’s New?. European Endodontic Journal. 2019; 4(3): 111 - 117. DOI 10.14744/eej.2019.80664
IEEE	TABASSUM S,ZAFAR K,UMER F "Nickel-Titanium Rotary File Systems: What’s New?." European Endodontic Journal, 4, ss.111 - 117, 2019. DOI 10.14744/eej.2019.80664
ISNAD	TABASSUM, Sadia vd. "Nickel-Titanium Rotary File Systems: What’s New?". European Endodontic Journal 4/3 (2019), 111-117. https://doi.org/DOI 10.14744/eej.2019.80664