Farklý enstrümentasyon sistemleri kullanýlarak yapýlan kök kanal preparasyonu sýrasýnda apikalden taþan debris miktarýnýn deðerlendirilmesi

Amaç: Bu çalýþmanýn amacý, Protaper Gold (PTG; Dentsply Maillefer, Ballaigues, Switzerland), WaveOne Gold (WOG; Dentsply Maillefer), One Shape New Generation (OSNG; MicroMega, Besancon, France), Twisted File Adaptive (TFA; SybronEndo, Orange, CA, USA), and K3XF (SybronEndo) nikel-titanyum enstrümantasyon sistemleri ile preparasyon boyunca apikalden taþan debris miktarýný araþtýrmaktýr.
Gereç ve Yöntem: Yetmiþ beþ insan tek köklü mandibular premolar diþ rastgele olarak 5 gruba ayrýlmýþtýr (n=15). Kök kanallarý PTG, WOG, OSNG, TFA, ve K3XF eðeleri kullanýlarak üreticinin talimatlarýna göre prepare edilmiþtir. Enstrümantasyon boyunca apikalden taþan debris önceden tartýlmýþ ependorf tüplerin içinde toplanmýþtýr. Ependorf tüpler daha sonra 5 gün boyunca 70°C’de bir inkübatör içerisinde muhafaza edilmiþtir. Tüpler yeniden tartýldý ve ilk ve son aðýrlýklarý arasýndaki fark hesaplanmýþtýr. Veriler istatistiksel olarak tek yönlü ANOVA ve Tukey post-hoc testleri kullanýlarak analiz edilmiþtir.
Bulgular: TFA grubu diðer tüm gruplar ile karþýlaþtýrýldýðýnda önemli ölçüde daha fazla debris taþýrmýþtýr (P<0,05). Ýstatistiksel olarak, K3XF ve OSNG gruplarý, WOG ve FTG gruplar ile karþýlaþtýrýldýðýnda daha fazla debris taþmasý ile iliþkili bulunmuþtur (P<0,05). K3XF ve OSNG gruplar arasýnda istatistiksel olarak anlamlý bir fark saptanmamýþtýr (P>0,05). Buna ek olarak, WOG ve FTG gruplarý arasýnda apikalden taþan debris miktarýnda istatistiksel olarak anlamlý bir farklýlýk bulunmamýþtýr (P>0,05).
Sonuç: Bu çalýþmanýn koþullarý altýnda, tüm enstrümantasyon sistemleri debrisin apikal ekstrüzyonu ile sonuçlandý. WOG ve PTG enstrümantasyon sistemleri diðer gruplar ile karþýlaþtýrýldýðýnda en az miktarda debris ekstrüzyonuna neden olmuþtur. Apikalden taþan debris miktarý, kullanýlan enstrümanýn metalürjisine, kinematiðine ve tasarýmýna göre deðiþebilir.

Evaluation of different instrumentation systems for apical extrusion of debris

Aim: The aim of present study was to investigate the amount of debris extruded apically during preparation with ProTaper Gold (PTG; Dentsply Maillefer, Ballaigues, Switzerland), WaveOne Gold (WOG; Dentsply Maillefer), One Shape New Generation (OSNG; MicroMega, Besancon, France), Twisted File Adaptive (TFA; SybronEndo, Orange, CA, USA), and K3XF (SybronEndo) nickel-titanium instrumentation systems.
Materials and Method: Seventy-five extracted human single- rooted mandibular premolar teeth were randomly assigned to 5 groups (n = 15). The root canals were prepared according to the manufacturers’ instructions using the PTG, WOG, OSNG, TFA, and K3XF instruments. Debris apically extruded during instrumentation was collected in pre-weighed eppendorf tubes. The eppendorf tubes were then stored in an incubator at 70°C for 5 days. The tubes were weighed again, and the difference between the initial and final weights was calculated. The data were statistically analyzed using oneway ANOVA and Tukey’s post-hoc tests.
Results: The TFA group extruded significantly more debris compared with all other groups (P<0.05). Statistically, K3XF and OSNG groups were associated with more debris extrusion compared with the WOG and PTG groups (P<0.05). There was no statistically significant difference between the K3XF and OSNG groups (P>0.05). Additionally, there was no statistical difference between the WOG and PTG groups in the amount of extruded debris (P>0.05).
Conclusions: Under the conditions of this study, all instrumentation systems resulted in apical extrusion of debris. The WOG and PTG instrumentation systems caused the least amount of extruded debris compared with the other groups. The amount of apically extruded debris may vary according to metallurgy, kinematics and design of the instrument used.