Publication: Farklı Yöntemlerle Üretilmiş Orijinal ve Muadil Döner Sistem Eğelerin Standardizasyon ve Döngüsel Yorgunluk Dirençlerinin Karşılaştırılması
Abstract
Amaç: Bu çalışmanın amacı farklı yöntemlerle üretilmiş resiprokal hareketle kullanılan orijinal ve muadil döner nikel-titanyum (NiTi) eğelerin standardizasyon ve tasarım özelliklerinin incelenmesi ve döngüsel yorgunluk dirençlerinin karşılaştırılmasıdır. Materyal ve Metot: Bu çalışmada her gruptan 10 adet olmak üzere 3 orijinal (R-Motion, OneRECI ve ZenflexONE) ve 2 muadil (Endoart Expert Gold ve Endoart Expert Blue) olmak üzere 5 farklı döner NiTi tek eğe sistem kullanıldı. Tasarım ve standardizasyon özellikleri yönünden eğelerin incelenmesi için stereomikroskop görüntüleme ve mikro BT kullanıldı. Döngüsel yorgunluk direncinin karşılaştırılması için eğeler statik döngüsel yorgunluk test cihazında kırılıncaya kadar kullanıldı. Elde edilen verilerin istatistiksel analizi için Kruskal-Wallis H testi, tek yönlü varyans analizi (One Way ANOVA) ve post-hoc Tukey HSD testleri kullanıldı. Bulgular: Eğeler standardizasyon ve tasarım özellikleri yönünden değerlendirildiğinde tüm eğelerin çapları nominal değerlere göre farklılık gösterdi ve gruplar arasında istatistiksel olarak anlamlı fark bulundu (p<0,05). Eğelerin ortalama konisiteleri nominal değerlerden farklı olmakla birlikte tek yönlü varyans analizinde gruplar arasında anlamlı bir fark bulunmadı (p=0,121). Döngüsel yorgunluğa bağlı kırılma direnci değerlendirildiğinde Endoart Expert Blue ve R-Motion eğelerin diğer eğelere göre daha uzun sürede kırıldığı gözlendi (p<0,05). Sonuç: Standardizasyon açısından tüm eğeler nominal değerlere göre farklılık gösterdi. Tüm gruplarda ortalama konisite değerleri ANSI/ADA 101 no'lu spesifikasyonda belirtilen ±0,05 tolerans aralığı içinde bulundu. Orijinal veya muadil fark etmeksizin 'Blue' ısıl işlem görmüş eğelerin döngüsel yorgunluk direnci 'Gold' ve 'Violet' ısıl işlem teknolojisi ile üretilen eğelere göre daha yüksek bulundu.
Aim: The aim of this study was to investigate standardization and design features and to compare the cyclic fatigue resistance of original and replica-like rotary nickel-titanium (NiTi) files, produced with different methods which are used with reciprocating motion. Material and Method: In this study, five different rotary NiTi single file systems were used, 10 from each group, consisting of 3 original (R-Motion, OneRECI and ZenflexONE) and 2 replica-like (Endoart Expert Gold and Endoart Expert Blue). Stereomicroscopic imaging and microCT were used to investigate the standardization and design features of the files. To compare cyclic fatigue resistane, the files were used in a static cyclic fatigue testing device until fracture occurred. Kruskal-Wallis H test, one-way analysis of variance (One way ANOVA) and post-hoc Tukey HSD tests were used for the statistical analysis of the data. Resılts: When the files were evaluated in terms of standardization and design features, the diameters of all files differed from nominal values and the difference among the groups was statistically significant (p<0,05). Although mean taper values of the files were different from the nominal values, no significant difference was found among the groups in one-way analysis of variance (p=0,121). When the fracture resistance due to cyclic fatigue was evaluated, it was observed that Endoart Expert Blue and R-Motion files fractured in longer time compared to other files (p<0,05). Conclusion: In terms of standardization, all files differed from the nominal values. In all groups, mean taper values fell within the ±0,05 tolerance range as stated in ANSI/ADA Specification No.101. The cyclic fatigue resistance of 'Blue' heat treated files were found to be higher than those produced with 'Gold' and 'Violet' heat treatment technology regardless of being original or replica-like
Aim: The aim of this study was to investigate standardization and design features and to compare the cyclic fatigue resistance of original and replica-like rotary nickel-titanium (NiTi) files, produced with different methods which are used with reciprocating motion. Material and Method: In this study, five different rotary NiTi single file systems were used, 10 from each group, consisting of 3 original (R-Motion, OneRECI and ZenflexONE) and 2 replica-like (Endoart Expert Gold and Endoart Expert Blue). Stereomicroscopic imaging and microCT were used to investigate the standardization and design features of the files. To compare cyclic fatigue resistane, the files were used in a static cyclic fatigue testing device until fracture occurred. Kruskal-Wallis H test, one-way analysis of variance (One way ANOVA) and post-hoc Tukey HSD tests were used for the statistical analysis of the data. Resılts: When the files were evaluated in terms of standardization and design features, the diameters of all files differed from nominal values and the difference among the groups was statistically significant (p<0,05). Although mean taper values of the files were different from the nominal values, no significant difference was found among the groups in one-way analysis of variance (p=0,121). When the fracture resistance due to cyclic fatigue was evaluated, it was observed that Endoart Expert Blue and R-Motion files fractured in longer time compared to other files (p<0,05). Conclusion: In terms of standardization, all files differed from the nominal values. In all groups, mean taper values fell within the ±0,05 tolerance range as stated in ANSI/ADA Specification No.101. The cyclic fatigue resistance of 'Blue' heat treated files were found to be higher than those produced with 'Gold' and 'Violet' heat treatment technology regardless of being original or replica-like
Description
Keywords
Citation
WoS Q
Scopus Q
Source
Volume
Issue
Start Page
End Page
97
