Journals / Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi / 2015 / Cilt: 25 - Sayı: 2

NİKEL TİTANYUM DÖNER KANAL ALETLERİNE UYGULANAN FARKLI TORK DEĞERLERİNİN EĞRİ KÖK KANAL PREPARASYONUNA ETKİLERİNİN İN VİTRO OLARAK İNCELENMESİ

AN IN VITRO STUDY OF THE EFFECTS OF DIFFERENT TORQUE VALUES APPLIED TO THE NICKEL TITANIUM ROTARY CANAL INSTRUMENTS FOR CURVED ROOT CANAL PREPARATION

Pages
172–180
Publication Date
2022-10-10
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: K3 instruments shaped curved canals with minimal transportation, when the torque value increased; on the contrary, greater values of absolute transportation occured with Mtwo instruments

📌 3 Key Takeaways

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Objective & Hypothesis:Aim: To evaluate the effects of different torque values applied to K3 and Mtwo instruments on curved canal preparation in vitro.
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Key Findings & Data:Material and Methods:One-hundred-twenty resin blocks with curved canals were divided into two main groups in which K3 and Mtwo series were used.
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Conclusion & Impact:Conclusion: K3 instruments shaped curved canals with minimal transportation, when the torque value increased; on the contrary, greater values of absolute transportation occured with Mtwo instruments
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Aim: To evaluate the effects of different torque values applied to K3 and Mtwo instruments on curved canal preparation in vitro. Material and Methods:One-hundred-twenty resin blocks with curved canals were divided into two main groups in which K3 and Mtwo series were used. The main groups were then divided into three subgroups. Torque values were set at 20 gcm, 60 gcm and 120 gcm in the K3 group and 100 gcm, 150 gcm and 300 gcm in the Mtwo group. Pre- and post-instrumentation images were superimposed and canal shape was assessed. Measurements were carried out at 5 different points: at the canal orifice (O); half-way to the orifice in the straight section (HO); beginning of the curve (BC); apex of the curve (AC); endpoint (EP). Results: In the K3 and Mtwo groups, the narrowest total width measurements were recorded at the subgroups that the torque was highest. In the K3 group, there were significant differences for the amount of resin removed from the outer curve at O, BC and AC; for the amount of resin removed from the inner curve at HO, BC, AC and EP. In the Mtwo group, significant differences were found for the amount of resin removed from the outer curve at HO, BC, AC and EP; and for the amount of resin removed from the inner curve at AC. Conclusion: K3 instruments shaped curved canals with minimal transportation, when the torque value increased; on the contrary, greater values of absolute transportation occured with Mtwo instruments

Özet

Amaç: Bu çalışmanın amacı K3 ve Mtwo eğelerine uygulanan farklı tork değerlerinin, eğri kök kanal preparasyonuna değerlendirilmesidir. Gereç ve Yöntem: 120 adet eğri kanallı rezin blok K3 ve Mtwo serilerinin kullanıldığı iki ana gruba ayrıldı. Ana gruplar daha sonra 20'er bloktan oluşan üç alt gruba ayrıldı. Tork değerleri K3 grubunda 20 gcm, 60 gcm ve 120 gcm; Mtwo grubunda 100 gcm, 150 gcm ve 300 gcm olarak belirlendi. Enstrümentasyon öncesi ve sonrası görüntüler çakıştırıldı ve kanal şekli değerlendirildi. Ölçümler 5 farklı noktada yapıldı: kanal ağzı (O), kanal ağzı ile eğimin başlangıcı arasındaki uzaklığın orta noktası (HO), eğimin başlangıcı (BC), eğimin apeksi (AC), son nokta (EP). Bulgular: K3 ve Mtwo gruplarında en dar toplam kanal genişliği ölçümleri, torkun en yüksek olduğu alt gruplarda kaydedildi. K3 grubunda, eğimin dış tarafından kaldırılan madde miktarı yönünden O, BC ve AC ölçüm noktalarında ve eğimin iç tarafından kaldırılan madde miktarı yönünden HO, BC, AC ve EP ölçüm noktalarında istatistiksel farklılık anlamlı bulundu. Mtwo grubunda, eğimin dış tarafından kaldırılan madde miktarı yönünden HO, BC, AC ve EP ölçüm noktalarında ve eğimin iç tarafından kaldırılan madde miktarı yönünden AC ölçüm noktasında istatistiksel farklılık anlamlı bulundu. Sonuç: K3 eğeleri tork değeri arttığında eğimli kanalları minimum trasportasyonla şekillendirdi; tam tersine, tork değeri arttığında Mtwo eğelerle daha büyük değerlerde transportasyon meydana geldi

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Cite This Article

ALTUNBAŞ, D., AKPINAR, K. E., KUŞTARCI, A. (2022). NİKEL TİTANYUM DÖNER KANAL ALETLERİNE UYGULANAN FARKLI TORK DEĞERLERİNİN EĞRİ KÖK KANAL PREPARASYONUNA ETKİLERİNİN İN VİTRO OLARAK İNCELENMESİ. Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi, Cilt: 25 - Sayı: 2, 172–180. https://ajindex.com/articles/452190

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References (15)

  1. Peters OA. Current challenges and concepts in the preparation of root canal systems: a review. J Endod 2004;30:559-67
  2. Cohen S, Burns RC. Pathways of the pulp. 8 ed. St Louise; CV Mosby: 2002. p. 231-91
  3. Schäfer E, Schulz-Bongert U, Tulus G. Comparison of hand stainless steel and nickel titanium rotary instrumentation: a clinical study. J Endod 2004;30:432-5
  4. Walia HM, Brantley WA, Gerstein H. An initial investigation of the bending and torsional properties of Nitinol root canal files. J Endod 1988;14:346-51
  5. Schäfer E. Shaping ability of Hero 642 rotary nickel-titanium instruments and stainless steel hand K-Flexofiles in simulated curved root canals. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2001;92:215-20
  6. Schäfer E, Florek H. Efficiency of rotary nickeltitanium K3 instruments compared with stainless steel hand K-Flexofile. Part 1. Shaping ability in simulated curved canals. Int Endod J 2003;36:199-207
  7. Thompson SA, Dummer PM. Shaping ability of Hero 642 rotary nickel-titanium instruments in simulated root canals: Part 2. Int Endod J 2000;33:255-61
  8. Thompson SA, Dummer PM. Shaping ability of ProFile.04 Taper Series 29 rotary nickel-titanium instruments in simulated root canals. Part 2. Int Endod J 1997;30:8-15
  9. Thompson SA, Dummer PM. Shaping ability of NT Engine and McXim rotary nickel-titanium instruments in simulated root canals. Part 2. Int Endod J 1997;30:270-8
  10. Thompson SA. An overview of nickel–titanium alloys used in dentistry. Int Endod J 2000;33:297-310
  11. Schäfer E, Erler M, Dammaschke T. Comparative study on the shaping ability and cleaning efficiency of rotary Mtwo instruments. Part 1. Shaping ability in simulated curved canals. Int Endod J 2006;39:196-202
  12. Malagino VA, Grande NM, Plotino G, Somma F. The Mtwo NiTi rotary system for root canal preparation. Roots 2006;3:67-70
  13. Bergmans L, Van Cleynenbreugel J, Wevers M, Lambrechts P. Mechanical root canal preparation with NiTi rotary instruments: rationale, performance and safety. Status report for the American Journal of Dentistry. Am J Dent 2001;14:324-33
  14. Aydin C, Inan U, Yasar S, Bulucu B, Tunca YM. Comparison of shaping ability of RaCe and Hero Shaper instruments in simulated curved canals. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2008;105:e92-7
  15. Karagöz-Küçükay I, Ersev H, Engin-Akkoca E, Küçükay S, Gürsoy T. Effect of rotational speed on root canal preparation with Hero 642 rotary Ni-Ti instruments. J Endod 2003;29:447-9. 1