Doğal bir kollajen çapraz bağlayıcının kendinden bağlanabilen akışkan kompozitlerin dentin bağlanma dayanımına etkisi

Amaç: Bu in vitro çalışmanın amacı proantosiyanidinden zengin bir özütün (üzüm çekirdeği özütü), kendinden bağlanabilen akışkan kompozitlerin [VertiseFlow, Kerr; Fusio Liquid Dentin, Pentron; NovaCompo SF, Imicryl] dentin makaslama bağlanma dayanımlarına etkisini incelemektir. Gereç ve Yöntemler: Bu çalışmada 90 adet çürüksüz insan üçüncü molar dişi kullanıldı. Dişlerin tüberkülleri uzaklaştırılarak düz okluzal dentin yüzeyleri hazırlandı. Dentin yüzeyleri #600 grenli zımpara kâğıdı ile zımparalandıktan sonra rastgele 6 gruba ayrıldı (n=15). Deney gruplarına ait dentin yüzeylerine kompozitleri bağlamadan önce bu yüzeyler %20'lik üzüm çekirdeği özütü ile muamele edildi. Kompozitler silindirik şekilli plastik matrisler içinde uygulandı ve ışık ile sertleştirildi. Makaslama bağlanma dayanımı için her bir örneğin diş-kompozit ara yüzeyinde kırılma meydana gelinceye kadar 1 mm/dk hızda kuvvet uygulandı. Veriler One-Way ANOVA ve Tukey's HSD Post-hoc testleri ile analiz edildi. Bulgular: Nova Compo SF ve Vertise Flow için, üzüm çekirdeği özütü ile muamele edilen gruplar ile kontrol gruplarının dentin bağlanma dayanımları arasında fark yoktu (p>0.05). Ancak, dentinin üzüm çekirdeği özütü ile muamele edilmesi Fusio Liquid Dentin'in dentine bağlanma dayanımını düşürdü (p

Effect of a natural collagen cross-linker on dentin bond strengths of self-adhering flowable composites

Background: The aim of this in vitro study was to investigate the effects of a proanthocyanidin-rich extract (grape seed extract) on the dentin shear bond strength of self-adhering flowable composites [Vertise Flow, Kerr; Fusio Liquid Dentin,Pentron; NovaCompo SF, Imicryl] Methods: Ninety extracted caries free human third molar teeth were used. Cusps of teeth were removed and flat occlusal dentin surfaces were prepared. Dentin surfaces ground with #600-grit SiC paper. The samples were randomly divided into 6 groups (n=15). Dentin surfaces of experimental groups were treated with 20% grape seed extract for 1 min before bonding the composites. Composites were applied by cylindrical shaped plastic matrixes and light cured. For shear bond testing, force was applied at a cross head speed of 1 mm/minute to each specimen at the interface between the tooth and composite until failure occurred. The data were analyzed by One-Way ANOVA and Tukey's HSD Post-hoc tests. Results: For Nova Compo SF and Vertise Flow, statistically there were no difference between the dentin bond strengths of grape seed extract treated groups and control groups (p>0.05). However, grape seed extract treatment decrease the dentin bond strength of Fusio Liquid Dentin (p<0.05). Conclusion: Grape seed extract (20%) that is used as a collagen cross-linker did not increase the dentin bond strength of self-adhering flowable composites. Moreover, grape seed treatment adversely affected the dentin bond strength of Fusio Liquid Dentin.

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