Hyflex EDM ve WaveOne Gold Döner Sistem Eğelerinin Ani ApikalKurvatürde Kırılma Dirençlerinin Karşılaştırılması

Restoratif dişhekimliğinde son yıllarda teorik ve pratik açıdan güncel gelişmeler kaydedilmiştir. Geleneksel bilgi ve güncel çalışmaların ışığında dişhekimliğindeki gelişmelerin kısa ve uzun dönemde değerlendirilmesi bilimsel ilerlemenin sürekliliğini sağlayacaktır. Eski restorasyonların düzenli olarak takip edilmesi dişhekimliğinde kullanılan malzeme ve tekniklerin değerlendirilmesi açısından çok önemlidir. Posterior direkt kompozit restorasyonların değerlendirilmesi sonucu tamir, yenileme veya yalnızca takip kararı verilebilir. Buna bağlı olarak tedavi kalitesi ve hasta memnuniyeti artacaktır. Bu derleme, yapılacak değerlendirmelerin bilimsel kriterlere dayanması ve evrensel dille ifade edilmesini amaçlamaktadır. Amaç: Bu çalışmanın amacı, Hyflex EDM ve WaveOne Gold döner sistem eğelerin döngüsel yorgunluğa bağlı kırılma dirençlerinin simule ani apikal kurvatürde karşılaştırılmasıdır. Yöntem: Bu çalışmada 10 adet Hyflex EDM OneFile (25/04 08) ve 10 adet WaveOne Gold Primary (25/07) eğe kullanıldı. Eğeler kurvatür açısı 90°, kurvatür yarıçapı 2 mm olan yapay kanallarda test edildi. Tüm eğeler önerilen hız ve tork değerlerinde 37°C sıcaklıkta kırılıncaya kadar kullanıldı. Kırılma zamanı 1/100 s dijital kronometre yardımıyla ölçüldü. Veriler kaydedildi ve %5’lik anlamlılık eşiği ile bağımsız örneklem t-testi kullanılarak karşılaştırıldı. Bulgular: Kırılıncaya kadar geçen ortalama süre WaveOne Gold grubu için 98.40 ± 19.93 ve Hyflex EDM grubu için ise 183.50 ± 35.33 saniye olarak bulundu. Hyflex EDM OneFile eğeler, WaveOne Gold Primary eğelere göre daha uzun sürede kırıldı ve aralarındaki fark istatistiksel olarak anlamlı bulundu (P

Comparison of the Fracture Resistance of Hyflex EDM and WaveOne Gold Rotary System Instruments in Abrupt Apical Curvature

Current developments in restorative dentistry have been recorded theoretically and practically in recent years. Short and long term evaluation in the dental practice in consideration of the developments of conventional knowledge and current studies will ensure the continuity of scientific progress. Regular monitoring of old restorations is very important in terms of evaluating the materials and techniques used in dentistry. As a result of the evaluation of posterior direct composite restorations, it may be decided to repair, retreatment or solely follow the restoration. Correspondingly, the quality of treatment and patient satisfaction will increase. This review aims to make evaluations based on scientific criteria and to be expressed in a universal language. Objective: This study aimed to compare the cyclic fatigue resistance of Hyflex EDM and WaveOne Gold rotary instruments in simulated abrupt apical curvature at body temperature. Methods and Materials: A total of 10 Hyflex EDM OneFile (25/04-08) and 10 WaveOne Gold Primary (25/07) instruments free of visible defects were selected after inspection. Instruments were tested in an artificial canal having an angle of curvature of 90° and a radius of curvature of 2 mm. The instruments were rotated at speed and torque values recommended by manufacturers at 37°C until fracture occurred. Time required for fracture (TF) was recorded with a 1/100 s digital chronometer. The TF and fractured fragment length data were statistically analyzed using t-test with significance threshold of 5%. Results: The mean TF value was 98.40 ± 19.93 seconds for WaveOne Gold group and 183.50 ± 35.33 seconds for Hyflex EDM group. Hyflex EDM OneFile instruments fractured in a longer time period than WaveOne Gold instruments and the difference between them was statistically significant (p

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