Does Double-layer Application of a Universal Adhesive Affect Its Bonding to Different Tooth Substrates?

Authors : Aybüke USLU TEKCE, Cansu ATALAY, Meltem Nermin DURSUN, A. Atila ERTAN, A. Rüya YAZICI

Pages : 794-800

Doi:10.33808/clinexphealthsci.932520

View : 32 | Download : 6

Publication Date : 2021-10-26

Article Type : Research Paper

Abstract :Objective: evaluate the influence of single- or double-layer application of a universal adhesive on the bond strength to different tooth substrates. Methods: To Seventy-two extracted sound human teeth were used for the study. The teeth were divided into three groups according to tooth substrates; enamel, coronal and radicular dentin insert ignore into journalissuearticles values(n=24);. The roots of the teeth were separated from the crowns and then abraded to obtain flat surfaces. The specimens were randomly allocated into 2 groups in accordance with application layers of universal adhesive insert ignore into journalissuearticles values(n=12);. The universal adhesive, Adhese Universal was applied in self-etch mode as single- or double-layer insert ignore into journalissuearticles values(without light-curing of the first layer); to different substrates. Following the adhesive application, enamel, coronal- and radicular dentin substrates were restored with a resin composite insert ignore into journalissuearticles values(Tetric N-Ceram);. The specimens were subjected to shear bond strength insert ignore into journalissuearticles values(SBS); test after storage in distilled water insert ignore into journalissuearticles values(37℃,24 h);. Representative fractured and interface samples from each group were examined by a scanning electron microscope. The data were analyzed using two-way ANOVAinsert ignore into journalissuearticles values(α = 0.05);. Results: There was no statistically difference in SBS values between single- and double-layer applications of the tested universal adhesive on different dental substrates insert ignore into journalissuearticles values(p>0.05);. Whilst no difference was occurred between the different dental substrates in the single-layer application insert ignore into journalissuearticles values(p>0.05);, double-layer application on coronal dentin presented significantly higher bond strength than enamel insert ignore into journalissuearticles values(p<0.05);. Conclusion: Double-layer application of the tested universal adhesive did not improve the bond strength regardless of different dental substrates.
Keywords : Universal adhesive, Shear bond strength, Double layer application