IN VITRO COMPARISON OF CYCLIC FATIGUE RESISTANCE OF PROTAPER NEXT AND TRUSHAPE 3D CONFORMING FILE NICKEL-TITANIUM ROTARY INSTRUMENTS

Ahmet Demirhan UYGUN; Mehmet ÜNAL; Mehmet Sinan EVCİL; Halit ALADAĞ

doi:https://doi.org/10.17567/ataunidfd.831765

Makale detayları

IN VITRO COMPARISON OF CYCLIC FATIGUE RESISTANCE OF PROTAPER NEXT AND TRUSHAPE 3D CONFORMING FILE NICKEL-TITANIUM ROTARY INSTRUMENTS

Yazarlar:

Ahmet Demirhan UYGUN | Mehmet ÜNAL | Mehmet Sinan EVCİL | Halit ALADAĞ

Yayıncı:

Ataturk University

Ana Başlıklar:

Cerrahi ve ilgili tıbbi uzmanlıklar

Dergi:

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi 2021 Vol.31 Issue 3, pp.385-389

Belge Tipi:

Makale

Yayın Tarihi:

7/2021

Belge Dili:

İngilizce

Document ID (Org No.):

2000891529

Sıklık:

Üç Aylık

eISSN:

2822-2555

DOI:

https://doi.org/10.17567/ataunidfd.831765

Anahtar kelimeler:

Özet:

 

Abstract
Aim: The purpose of this study was to compare the cyclic fatigue resistance of all instruments of the ProTaper Next (PTN) and TRUShape 3D Conforming File (TRS) systems.
Materials and Methods: A total of 120 nickel–titanium rotary instruments were divided into eight groups:  PTN X1, PTN X2, PTN X3, PTN X4, TRS 20/.06v, TRS 25/.06v, TRS 30/.06v and TRS 40/.06v. Each group had 15 instruments. All the instruments were tested for cyclic fatigue resistance in stainless steel artificial canals with 5 mm radius and 60° angle of curvature. They were rotated until they got fractured, and the test was performed in a saline solution at 35°C (±2). The number of cycles to fracture (NCF) was calculated by measuring the time to fracture. The NCF data were analysed statistically using the Kruskal–Wallis H and post hoc Tamhane T2 tests for multiple comparisons (α-level = 0.05).
Results: The PTN X1 group had the highest NCF (P  0.05). However, there was a statistical difference between the other groups of similar sizes (X1–TRS 20/.06v) (X3–TRS 30/.06v) (X4–TRS 40/.06v) (P  0.05). Benzer boyutlara sahip diğer gruplar arasında ise istatistiksel olarak fark vardı (X1–TRS 20/.06v) (X3–TRS 30/.06v) (X4–TRS 40/.06v) (P < 0.05).
Sonuç: Bu çalışmanın sınırları dahilinde, PTN döner aletlerinin bir kısmı (X1, X3 ve X4) daha eski bir teknoloji ile üretilmiş olmalarına ragmen, TRS döner aletlerinden (20/.06, 30/.06 ve 40/.06) daha yüksek döngüsel yorulma direncine sahiptir. Bu sonuç, S-eğimli tasarımın özellikle büyük konik ve uç boyutlarına sahip döner aletlerde kırılma riskini arttırdığını göstermiştir.
Anahtar Kelimeler: döngüsel yorulma direnci, S-eğimli tasarım, TRUShape.

 

Abstract
Aim: The purpose of this study was to compare the cyclic fatigue resistance of all instruments of the ProTaper Next (PTN) and TRUShape 3D Conforming File (TRS) systems.
Materials and Methods: A total of 120 nickel–titanium rotary instruments were divided into eight groups:  PTN X1, PTN X2, PTN X3, PTN X4, TRS 20/.06v, TRS 25/.06v, TRS 30/.06v and TRS 40/.06v. Each group had 15 instruments. All the instruments were tested for cyclic fatigue resistance in stainless steel artificial canals with 5 mm radius and 60° angle of curvature. They were rotated until they got fractured, and the test was performed in a saline solution at 35°C (±2). The number of cycles to fracture (NCF) was calculated by measuring the time to fracture. The NCF data were analysed statistically using the Kruskal–Wallis H and post hoc Tamhane T2 tests for multiple comparisons (α-level = 0.05).
Results: The PTN X1 group had the highest NCF (P  0.05). However, there was a statistical difference between the other groups of similar sizes (X1–TRS 20/.06v) (X3–TRS 30/.06v) (X4–TRS 40/.06v) (P < 0.05).
Conclusion: Within the limitations of this study, most of the PTN instruments (X1, X3, and X4) have better cyclic fatigue resistance than do TRS instruments (20/.06, 30/.06 and 40/.06) even if they were manufactured with older technology. This result showed that the S-curve design increases the risk of fracture in instruments with large tapers and tip sizes. 
Keywords: cyclic fatigue resistance, S-curve design, TRUShape.

Makale detayları

IN VITRO COMPARISON OF CYCLIC FATIGUE RESISTANCE OF PROTAPER NEXT AND TRUSHAPE 3D CONFORMING FILE NICKEL-TITANIUM ROTARY INSTRUMENTS

Yazarlar: Ahmet Demirhan UYGUN | Mehmet ÜNAL | Mehmet Sinan EVCİL | Halit ALADAĞ

Yayıncı: Ataturk University

Ana Başlıklar: Cerrahi ve ilgili tıbbi uzmanlıklar

Dergi: Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi 2021 Vol.31 Issue 3, pp.385-389

Belge Tipi: Makale

Yayın Tarihi: 7/2021

Belge Dili: İngilizce

Document ID (Org No.): 2000891529

Sıklık: Üç Aylık

eISSN: 2822-2555

DOI: https://doi.org/10.17567/ataunidfd.831765

cyclic fatigue resistance

S-curve design

Sayı

Yazarlar:

Ahmet Demirhan UYGUN | Mehmet ÜNAL | Mehmet Sinan EVCİL | Halit ALADAĞ

Yayıncı:

Ataturk University

Ana Başlıklar:

Cerrahi ve ilgili tıbbi uzmanlıklar

Dergi:

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi 2021 Vol.31 Issue 3, pp.385-389

Belge Tipi:

Makale

Yayın Tarihi:

7/2021

Belge Dili:

İngilizce

Document ID (Org No.):

2000891529

Sıklık:

Üç Aylık

eISSN:

2822-2555

DOI:

https://doi.org/10.17567/ataunidfd.831765