Tamer TAŞDEMİR, Kürşat ER, Sabri CORA, Rasih FELEK, Hakan ER, Nadir KİRAZ, Burcu BECER

Gümüş İyon Yüzey Kaplamasının Nikel-titanyum Döner Eğelerin Antimikrobiyal ve Kesme Etkinliği Üzerine Etkisi

Amaç: Gümüş iyonlarının birçok mikroorganizmaya karşı etkili antimikrobiyal aktiviteye sahip olduğu iyi bilinmektedir. Bu çalışmanın amacı, yüzeyleri gümüş iyonları ile kaplanmış nikel-titanyum döner eğelerin antimikrobiyal ve kesme etkinliklerinin daldırma-kaplama yöntemi ile değerlendirilmesidir. Gereç ve Yöntemler: Endodontik eğe kaplama işlemi yapılmadan önce bir ön çalışma yapıldı. Hazırlanan kaplama solüsyonları (silan ve gümüş-kompleks sistemleri), spin kaplama metodu kullanılarak paslanmaz çelik levhalara uygulandı. Kaplamaların antibakteriyelaktivitesi Enterococcus faecalis’e karşı araştırıldı. Sonuç olarak, %20 solit oranı ve %2 gümüş içeriğine sahip kaplama çözeltisi seçildi. Daha sonra eğeler yapılan kaplama hızına göre 3 gruba [grup 1, 50 mm/dk; grup 2, 25 mm/dk; ve grup 3, kaplanmamış eğeler (kontrol)] ayrıldı. Şeffaf akrilik blokların ağırlık kaybı hesaplanarak kesme etkinliği değerlendirildi. Eğe yüzeyi ve kesit değerlendirmesi,yüzey işlemleri öncesi ve sonrasında, taramalı elektron mikroskobu (TEM) ve TEM-energy-dispersive X-ray spektroskopisi ile taranarak yapıldı. Elde edilen veriler, tek yönlü varyans analizi ve post-hoc Bonferroni testi ile istatistiksel olarak analiz edildi (p

Effect of Silver Ion Surface Coating onAntimicrobial and Cutting Efficiencies ofNickel-titanium Rotary Files

Objective: Silver ions are well known to have effective antimicrobial activity against many microorganisms. This study aims to evaluate the antimicrobial and cutting efficiencies of nickel-titanium rotary file surface coated with silver ions by using the dip-coating method.Materials and Methods: A pilot study was performed before the endodontic file coating. The prepared coating solutions (silan and silver-complex systems) were applied to stainless steel plates by using the spin-coating method. The antibacterial activity of the coatings was researched against Enterococcus faecalis, which resulted in the selection of the coating solution with a 20% solid ratio and 2% silver content. Subsequently, the files were assigned to three groups based on the coating speed [group 1, 50 mm/min; group 2, 25 mm/min; and group 3, non-coated files (control)]. The cutting efficiency was evaluated by calculating the weight loss of the transparent acrylic blocks. The file surface and section was evaluated using scanning electron microscopy (SEM) and SEM-energy-dispersive X-ray spectroscopy before and after preparation. Data were statistically analysed with one-way analysis of variance and post-hoc Bonferroni test (p

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