The comparison of shear bond strenght of different bulk-fill composites to a bioactive dentine substitute [Farkli bulk-fill kompozitlerin bir bioaktif dentin substratina makaslama bağlanma dayanimlarinin karşilaştirilmasi]

Abstract

Objective: The aim of this research was to compare shear bond strength(SBS) of various bulk-fill composites (BFC) to Biodentine(BD) with different time intervals. Materials and Methods: 300 cyclindrical acrylic blocks with a hole (4 mm diameter a 2 mm height) were prepared. The holes were filled with BD and after bonding application, 5 different BFC groups (Tetric EvoCeram Bulk Fill, Filtek Bulk Flow, Beautifil Bulk, Filtek Bulk Fill Posterior and SDR) were divided into 10 main groups in 2 mm and 4 mm height, and these 10 main groups were divided into 3 subgroups according to three different waiting times (12 min, 24 hour and 2 week). After then, SBSs measured and the fractured surfaces were examined. Statistical analyzes were performed with Kolmogorov-Simirnov, Tukey HSD and One-way ANOVA tests. Results: There was found statistically significant difference in all BFC groups between 12 minutes, 24 hours and 2 weeks (p < 0.05). Significant differences were found between the 2 mm and 4 mm Filtek Posterior BFCs (p < 0.05). However, there was not significant differences in the other BFC groups (p > 0.05). Conclusion: In all BFC groups, there was significant difference found between the groups waited for 12 min and,24 h and 2 weeks. In clinically, we may prefer to use BFC at a height of 4 mm, onto BD with after 1 day of waiting time. © 2018 Cumhuriyet University Faculty of Dentistry.Amaç: Araştirmanin amaci farkli Bulk-fill kompozitlerin (BFK) Biodentine (BD) farkli zaman araliklarinda b?lanti dayanimlarini karşilaştirmaktir. Gereç ve Yöntemler: çalişmada, 300 adet akrilik blok, ortasi boşluk olacak (2mm kalinlik ve 4mm yükseklikte) şekilde hazirlanmiştir. Bu boşluk kisim, BD ile doldurulmuş ve 5 farkli BFK, BD üzerine 2mm ve 4mm yüksekliklerde (her bir grup 10 örnekten oluşacak şekilde) b?lanarak, üç farkli bekleme süresine göre 3 alt gruba ayrilmiştir (12 dk., 24 sa ve 2 hafta). Daha sonra b?lanti dayanim d?erleri ölçüldü ve kirik yüzeyler incelendi. I?statistiksel analizler Kolmogorov-Simirnov, Tukey HSD ve One-way ANOVA testleri ile yapildi. Bulgular: Tüm BFK gruplarinda 12 dakika, 24 saat ve 2 hafta bekletilmiş gruplar arasinda anlamli fark bulundu (p < 0,05). 2 mm ve 4 mm Filtek Posterior BFK'ler arasinda anlamli fark bulunurken (p < 0,05), d?er BFK gruplarinda anlamli farklilik bulunmadi (p > 0,05). Sonuç: Tüm BFC gruplarinda 12 dakika, 24 saat ve 2 hafta bekletilmiş gruplar arasinda anlamli fark bulundu. Klinik olarak BD üzerine 4mm yükseklikte BFK uygulamasi yapilacaksa, 1 gün beklemeyi tercih edebiliriz. © 2018 Cumhuriyet University Faculty of Dentistry.