Shaping ability of two M-wire and two traditional nickel-titanium instrumentation systems in S-shaped resin canals

Ceyhanli, KT; Kamaci, Aysenur; Taner, Memduh Sami; Erdilek, Necdet; Çelik, Davut

doi:10.4103/1119-3077.163294

Cited by 18 publications

(15 citation statements)

References 27 publications

(33 reference statements)

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“…In this study, simulated canals in resin blocks had been used as an experimental model for assessment of shaping ability of the instruments. These simulated canals are an alternative to the real human extracted teeth and have been used in several studies to test the shaping ability of files [ 10 , 11 ]. Although the major advantage of using extracted human teeth is the reproduction of the clinical situation, the variations in three-dimensional root canal morphology makes standardization difficult [ 12 ].…”

Section: Discussionmentioning

confidence: 99%

Shaping Ability of Superelastic and Controlled Memory Nickel-Titanium File Systems: An In Vitro Study

Ba-Hattab

Pahncke

2018

International Journal of Dentistry

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Improvements in the thermomechanical processing procedures of NiTi wires have led to the development of new NiTi instruments that compose mainly of martensite crystals, making the wire stable at clinical condition. This study aimed at comparing the shaping ability of two rotary nickel-titanium systems manufactured from different NiTi wires. Twenty simulated root canals each with a curvature of 35° in resin blocks were divided into two groups of 10 canals each. Canals in the first group were prepared with superelastic F360 instruments (Gebr. Brasseler, Germany) while canals in the second group were prepared using controlled memory HyFlex®CM™ instruments (Coltène Whaledent, Switzerland). Images were taken before canal preparation and after the use of each instrument. The assessment of the canal shapes was accomplished with a computer image analysis program. Data were statistically analyzed using SPSS program. Within the limitation of this in vitro study, HyFlex®CM™ instruments remained better centered in the apical third of the canals. In most canal segments, no significant differences were observed between either system in the amount of material removed. Both systems were comparable to each other in regards to their ability to enlarge root canal in the same way without procedural errors.

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Section: Discussionmentioning

confidence: 99%

Shaping Ability of Superelastic and Controlled Memory Nickel-Titanium File Systems: An In Vitro Study

Ba-Hattab

Pahncke

2018

International Journal of Dentistry

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“…Ceyhanli ve ark. 23 S-şekilli yapay kanalları kullanarak yaptıkları çalışmada konikliği fazla olan ProTaper ve WaveOne eğelerin konikliği az olan Sendoline S5 ve GT series X eğelerden daha fazla miktarda madde kaldırdıklarını ve daha fazla transportasyona neden olduklarını bildirmişlerdir. Karşılaştırması yapılan eğeler farklı olsa da bu çalışmada da önceki çalışmalarla benzer şe-kilde, S5 eğelerin Mtwo eğelerden daha az genişletme yaptığı ve 5. ölçüm noktası haricinde diğer tüm ölçüm noktalarında, eğimin iç ve dış kısmından daha az madde kaldırdığı ve eğim bölgesinde daha az transportasyon meydana getirdiği saptandı.…”

Section: Discussionunclassified

Mtwo ve S5 NiTi döner kanal eğelerinin yapay kök kanalını şekillendirme etkinliklerinin karşılaştırılması

Altunbaş¹,

Kuştarcı²,

Akpınar³

et al. 2016

Acta Odontol Turc

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[Abstract in English is at the end of the manuscript] GİRİŞEğri kanalların paslanmaz çelik eğelerle şekillendirilme-siyle dirsek, zip, basamak, perforasyon, alet kırığı veya çalışma boyu kaybı gibi istenmeyen hataların oluştuğu birçok çalışmada gösterilmiştir.1-3 Endodontik tedavinin başarısını olumsuz yönde etkileyen bu tür problemlerin üstesinden gelmek için çeşitli enstrümanlar, cihazlar ve kanal preparasyon teknikleri geliştirilmiştir. Nikel-titanyum (NiTi) alaşımının üstün elastikiyet özelliği, son 25 yıldır bu alaşımın endodontik eğelerin üretiminde kullanılmasına olanak sağlamıştır. NiTi eğeler esneklikleri ve şekil hafıza özellikleri sayesinde özellikle dar ve eğri kök kanallarının preparasyonu sırasında kanalın orijinal şeklini koruyabilmektedirler. Bu eğelerin çalışma gü-venliğini sağlayabilmek, çalışma süresini kısaltmak ve daha konik bir preparasyon oluşturmak için çeşitli tasarımları ve farklı protokollerle kullanılanları mevcuttur. 4NiTi döner sistemlerle genellikle crown-down preparasyon tekniği kullanılarak şekillendirme yapılmaktadır. Bu teknik kanal içi sürtünme streslerini azaltmakta ve böylece alet kırığı riskini en aza indirmektedir.5 Bununla birlikte, Mtwo sistemde (VDW, Münih, Almanya) diğer döner sistemlerin aksine, eğeler ön koronal genişlet-me yapılmadan çalışma boyunda (tek uzunluk tekniği) kullanılmaktadır.6 Bu eğeler S-şekilli bir kesite ve kesici olmayan güvenli bir uca sahiptir. Ayrıca, iki kesici kenarı olan pozitif kesme açısı ile karakterizedir. Devamlı rotasyon sırasında sıkışmayı önlemek ve debrisin apikale doğru taşınmasını azaltmak için kesici bıçakları arasındaki mesafe uçtan sap kısmına doğru artmaktadır. 5 Mtwo sistemde 10-60 numaralı, .04, .05, .06 ve .07 koniklikte eğeler bulunmaktadır.

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“…Literature research results reported that the shaping ability of S5 was examined in few studies [6][7][8]. In one study, S5 recorded similar transportation with Reciprocal and twisted file (TF) at the apical part, and greater transportation than TF at the middle part [6].…”

Section: S5 (Sendoline Täby Sweden) Is a New Ni Ti Rotary System Mamentioning

confidence: 99%

“…Taper Universal and wave one and similar transportation with GT series X [7]. The last study was examined canal transportation only in extracted teeth.…”

Section: S5 (Sendoline Täby Sweden) Is a New Ni Ti Rotary System Mamentioning

confidence: 99%

Canal Transportation, Centering Ability and Maintain Canal Curvature of Sendoline Versus Protaper Universal Rotary Nickel Titanium Files in Preparing Curved Root Canals: An In Vitro Study

Salama¹,

El-Khodary²,

Segari³

2019

Act Scie Dental

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The purpose of this study was to evaluate the shaping ability of S5 rotary system in relation to Pro Taper Universal system in preparation moderately curved root canal their effect on the canal transportation, centering ability and canal curvature change. Materials and Methods: Collected thirty mesiobuccally root canals of extracted human mandibular first molar were divided into two equal groups; Pro Taper and S5. The samples were mounted in two moulds of acrylic resin for pre-instrumentation imaging using cone beam computed tomography (CBCT). After root canal instrumentation, post-instrumentation imaging using CBCT was done with the exacted parameters of the pre-instrumentation imaging. The pre and post-instrumentation CBCT images were superimposed to measure the dentin thickness at three root canal levels; Canal transportation and centering ability were recorded according to formula introduced by Gambill., et al. (1996), while the change in the angle of canal curvature was recorded following Estrela., et al. (2008). Statistical Analysis: Data was tabulated and statistically analyzed; Independent samples t-test was used for comparing the variables between the two groups at each root canal level and also was used for comparing the percentage of change in the canal curvature angle between the two groups. The significance level is considered at P ≤ 0.05. Results: There was no statistically significant difference between the two rotary systems in canal transportation except at the coronal level; S5 recorded statistically lower mean value of root canal transportation than Pro Taper system. The centering ratios and the changes in the angles of canal curvature after the use of both systems were not statistically significant. None of the used systems showed perfect centering ability. Conclusion: Under limitations of this in vitro study, it can be concluded that; preparation of moderately curved mesio-buccal root canals with S5 was associated with lesser coronal transportation and similar middle and apical transportation, centering ability, and canal curvature change when compared to Pro Taper. anatomy specifically root canal curvatures present a challenge to enlarging instruments and might accompany by a number of

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Shaping ability of two M-wire and two traditional nickel-titanium instrumentation systems in S-shaped resin canals

Cited by 18 publications

References 27 publications

Shaping Ability of Superelastic and Controlled Memory Nickel-Titanium File Systems: An In Vitro Study

Shaping Ability of Superelastic and Controlled Memory Nickel-Titanium File Systems: An In Vitro Study

Mtwo ve S5 NiTi döner kanal eğelerinin yapay kök kanalını şekillendirme etkinliklerinin karşılaştırılması

Canal Transportation, Centering Ability and Maintain Canal Curvature of Sendoline Versus Protaper Universal Rotary Nickel Titanium Files in Preparing Curved Root Canals: An In Vitro Study

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