Investigation of the shear bond strength to dentin of universal adhesives applied with two different techniques

Year 2017, , 91 - 97, 15.01.2017

Elif Yaşa Duygu Yıldızeli Zübeyir Sayıner Ali Erdem

https://doi.org/10.17214/gaziaot.285850

Abstract

Objective: The aim of this study was to evaluate the shear bond strength of universal adhesives applied with self-etch and etch&rinse techniques to dentin.

Materials and Method: Fourty-eight sound extracted human third molars were used in this study. Occlusal enamel was removed in order to expose the dentinal surface, and the surface was flattened. Specimens were randomly divided into four groups and were sectioned vestibulo-lingually using a diamond disc. The universal adhesives: All Bond Universal (Group 1a and 1b), Gluma Bond Universal (Group 2a and 2b) and Single Bond Universal (Group 3a and 3b) were applied onto the tooth specimens either with self-etch technique (a) or with etch&rinse technique (b) according to the manufacturers’ instructions. Clearfil SE Bond (Group 4a; self-etch) and Optibond FL (Group 4b; etch&rinse) were used as control groups. Then the specimens were restored with a nanohybrid composite resin (Filtek Z550). After thermocycling, shear bond strength test was performed with a universal test machine at a crosshead speed of 0.5 mm/min. Fracture analysis was done under a stereomicroscope (×40 magnification). Data were analyzed using two-way ANOVA and post-hoc Tukey tests.

Results: Statistical analysis showed significant differences in shear bond strength values between the universal adhesives (p<0.05). Significantly higher bond strength values were observed in self-etch groups (a) in comparison to etch&rinse groups (b) (p<0.05). Among all groups, Single Bond Universal showed the greatest shear bond strength values, whereas All Bond Universal showed the lowest shear bond strength values with both application techniques.

Conclusion: Dentin bonding strengths of universal adhesives applied with different techniques may vary depending on the adhesive material. For the universal bonding agents tested in this study, the etch&rinse technique negatively affected the bond strength to dentin.

Keywords

Acid etching, dental, bonding agents, dentin, shear strength

İki farklı teknikle uygulanan üniversal bağlayıcı ajanların dentine olan makaslama bağlanma dayanımlarının incelenmesi

Abstract

Amaç: Bu çalışmanın amacı, kendinden pürüzlendirmeli ve asitle-yıka teknikle uygulanan üniversal bağlayıcı ajanların dentine olan makaslama bağlanma dayanımlarını değerlendirmektir.

Gereç ve Yöntem: Çalışmamızda toplam 48 adet sağlam üçüncü büyük azı dişi kullanıldı. Oklüzal mine uzaklaştırıldıktan sonra açığa çıkan dentin yüzeyleri düzleştirildi. Dişler rastgele dört gruba ayrıldı ve elmas disk yardımıyla bukko-lingual yönde ikiye bölündü. Elde edilen yarımların her birine kendinden pürüzlendirmeli (a) veya asitle-yıka teknikle (b) All Bond Universal (Grup 1a ve 1b), Gluma Bond Universal (Grup 2a ve 2b) veya Single Bond Universal (Grup 3a ve 3b) bağlayıcı sistemleri üretici firma talimatlarına göre uygulandı. Clearfil SE Bond (Grup 4a) kendinden pürüzlendirmeli ve Optibond FL (Grup 4b) asitle-yıka tekniğiyle kontrol grubu olarak kullanıldı. Örnekler nanohibrit kompozit rezin (Filtek Z550) kullanılarak restore edildi. Isıl yorma işleminden sonra örneklere üniversal test cihazında 0.5 mm/dk hızla makaslama bağlanma testi uygulandı. Oluşan kırık tipleri stereomikroskop altında ×40 büyütmede incelendi. Elde edilen veriler iki yönlü varyans analizi (ANOVA) ve Tukey çoklu karşılaştırma testi kullanılarak analiz edildi.

Bulgular: Üniversal bağlayıcı sistemlerin makaslama bağlanma değerleri arasındaki farklılıklar istatistiksel olarak anlamlı bulundu (p<0.05). Kendinden pürüzlendirmeli (a) gruplarında asitle-yıka (b) gruplarına göre anlamlı derecede daha yüksek bağlanma değerleri gözlendi (p<0.05). Hem kendinden pürüzlendirmeli hem de asitle-yıka teknikle uygulanan materyaller arasında Single Bond Universal en yüksek bağlanma dayanımını gösterirken en düşük bağlanma dayanımı All-Bond Universal grubunda gözlendi.

Sonuç: Farklı tekniklerle uygulanan üniversal bağlayıcı sistemlerin dentine bağlanma dayanımları kullanılan materyale göre değişiklik gösterebilir. Asitle-yıka tekniğin kullanılması üniversal bağlayıcı ajanların dentine olan bağlanma dayanımını olumsuz etkilemektedir.

Keywords

Asitle aşındırma, dental, bağlantı ajanları, dentin, kayma mukavemeti

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