Publication: Farklı Nikel Titanyum Döner Sistem Eğelerinin Kesme Etkinliklerinin ve Şekillendirme Yeteneklerinin Karşılaştırılması
Abstract
Amaç: Bu tez çalışmasının amacı farklı nikel titanyum döner sistemlerinin kesme etkinliklerinin ve şekillendirme yeteneklerinin karşılaştırılmasıdır. Gereç ve Yöntem: Farklı ısıl işlemlerle üretilmiş TruNatomyTM (Dentsply Maillefer, Ballaigues, İsviçre), VDW.ROTATETM (VDW, Münih, Almanya), Endostar E3 Azure (Poldent, Varşova, Polonya), EdgeFile® X3/X7 (EdgeEndo, Albuquerque, NM, ABD) döner sistemleri n=12 olacak 4 gruba ayrıldı; kesme etkinlikleri 150 gram serbest ağrılık uygulanarak lateral eksende pleksiglas örnekler üzerinde, şekillendirme yetenekleri her bir döner sistemin uygun hız ve tork değerlerinde 70°lik eğrilik açısına sahip J-şekilli yapay kök kanallarında değerlendirildi. Pleksiglas örnekler ve şeffaf rezin bloklar dijital olarak görüntülendi ve Adobe Photoshop 2022 (Adobe, San Jose, CA, ABD) görüntü işleme yazılımıyla örnekler üzerinde ölçümler yapıldı. Elde edilen bulgular SPSS 25.0 (IBM, Chicago, IL, ABD) istatistik programına aktarılarak için tek yönlü varyans analizi (One-Way ANOVA) ve Post-Hoc Tukey's HSD testleriyle değerlendirildi. Bulgular: Kesme etkinliği değerlendirildiğinde EdgeFile® X3 C2 döner aletinin diğer döner aletlere göre anlamlı derecede daha çok alan ve derinlik kestiği bulundu (p<0.05). Şekillendirme yeteneği değerlendirildiğinde TruNatomyTM döner sisteminin diğer döner sistemlerden daha az rezin uzaklaştırdığı; EdgeFile® X7 döner sisteminin TruNatomyTM döner sistemine göre özellikle orta üçlüde yüksek transportasyon oluşturduğu ve düşük merkezde kalma oranına sahip olduğu bulundu (p<0.05). Sonuç: Döner aletlere yüksek kesme etkinliği sağlayan Fire-Wire alaşımının, klinik kullanımda şekillendirme sırasında transportasyon ve strip perforasyon gibi prosedürel hataların oluşmasına neden olabileceği; TruNatomyTM döner sisteminin eğimli kanalların şekillendirilmesinde güvenle kullanılabileceği sonucuna varılmıştır. Anahtar Kelimeler: Endodonti, kesme etkinliği, nikel titanyum, şekillendirme yeteneği
Aim: The aim of this study is to compare the cutting efficiency and shaping abilities of different nickel titanium rotary systems. Material and Method: TruNatomyTM (Dentsply Maillefer, Ballaigues, Switzerland), VDW. ROTATETM (VDW, Munich, Germany), Endostar E3 Azure (Poldent, Warsaw, Poland), EdgeFile® X3/X7 (EdgeEndo, Albuquerque, NM, USA) rotary systems with different heat treatments were divided into 4 groups of n=12; their cutting efficiency was evaluated on plexiglass specimens in the lateral axis by applying 150 grams of free weight, and their shaping ability was evaluated on J-shaped artificial root canals with a 70° angle of curvature at the recommended speed and torque values of each rotary system. Plexiglass specimens and clear resin blocks were digitally imaged, and measurements were made on the specimens using Adobe Photoshop 2022 (Adobe, San Jose, CA, USA) image processing software. The findings were transferred to the statistical program SPSS 25.0 (IBM, Chicago, IL, USA) and evaluated using one-way analysis of variance (One- Way ANOVA) and Post-Hoc Tukey's HSD tests. Results: In terms of cutting efficiency, the EdgeFile® X3 C2 rotary instrument cut significantly more area and depth than the other rotary instruments (p<0.05). When shaping ability was evaluated, it was found that the TruNatomyTM rotary system removed less resin than the other rotary systems; the EdgeFile® X7 rotary system caused transportation, especially in the middle area of the canal, and had a lower canal-centering ratio than the TruNatomyTM rotary system (p<0.05). Conclusion: It was concluded that Fire-Wire alloy, which provides high cutting efficiency to rotary instruments, can cause procedural errors such as transportation and strip perforation during shaping in clinical use, and that the TruNatomyTM rotary system can be safely used for shaping curved canals. Keywords: Endodontics, cutting efficiency, shaping ability, nickel titanium
Aim: The aim of this study is to compare the cutting efficiency and shaping abilities of different nickel titanium rotary systems. Material and Method: TruNatomyTM (Dentsply Maillefer, Ballaigues, Switzerland), VDW. ROTATETM (VDW, Munich, Germany), Endostar E3 Azure (Poldent, Warsaw, Poland), EdgeFile® X3/X7 (EdgeEndo, Albuquerque, NM, USA) rotary systems with different heat treatments were divided into 4 groups of n=12; their cutting efficiency was evaluated on plexiglass specimens in the lateral axis by applying 150 grams of free weight, and their shaping ability was evaluated on J-shaped artificial root canals with a 70° angle of curvature at the recommended speed and torque values of each rotary system. Plexiglass specimens and clear resin blocks were digitally imaged, and measurements were made on the specimens using Adobe Photoshop 2022 (Adobe, San Jose, CA, USA) image processing software. The findings were transferred to the statistical program SPSS 25.0 (IBM, Chicago, IL, USA) and evaluated using one-way analysis of variance (One- Way ANOVA) and Post-Hoc Tukey's HSD tests. Results: In terms of cutting efficiency, the EdgeFile® X3 C2 rotary instrument cut significantly more area and depth than the other rotary instruments (p<0.05). When shaping ability was evaluated, it was found that the TruNatomyTM rotary system removed less resin than the other rotary systems; the EdgeFile® X7 rotary system caused transportation, especially in the middle area of the canal, and had a lower canal-centering ratio than the TruNatomyTM rotary system (p<0.05). Conclusion: It was concluded that Fire-Wire alloy, which provides high cutting efficiency to rotary instruments, can cause procedural errors such as transportation and strip perforation during shaping in clinical use, and that the TruNatomyTM rotary system can be safely used for shaping curved canals. Keywords: Endodontics, cutting efficiency, shaping ability, nickel titanium
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