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Title:
Evaluation of the Bond Strength of Resin-Modified Glass Ionomer Enhanced with Bioactive Glass to Composite Resin with Different Dental Adhesive Systems
Authors:  Seyhmus Bakir, D.D.S., Elif Pınar Bakir, D.D.S., Ph.D., and Sema Yazici Akbiyik, D.D.S., Ph.D.
  Objective: To investigate the bond strength of resin-modified glass ionomer enhanced with bioactive glass (Activa BioActive-Base/Liner) to composite resin using different dental adhesive systems.
Study Design:
In this study, Activa BioActive-Base/Liner (ABA/BL) was placed in cylindrical cavities formed in acrylic blocks. In blocks divided into 6 groups according to the adhesive system to be applied, two-step etch-and-rinse Gluma 2 Bond (Heraeus Kulzer, Germany), one-step self-etch Gluma Self Etch (Heraeus Kulzer), universal system Gluma Universal (Heraeus Kulzer), two-step self-etch Clearfil SE Protect (Kuraray, Japan), one-step self-etch Clearfil S3 Bond Plus (Kuraray), and universal system Clearfil S3 Bond Universal (Kuraray) adhesive systems were applied on ABA/BL. After composite resin (3M ESPE Filtek Ultimate) was applied to the prepared surfaces, the specimens were placed in a universal test device and shear bond strength test was determined. Fracture types were evaluated using a stereomicroscope and scanning electron microscope. Data were analyzed by Shapiro-Wilk, two-way ANOVA, Kruskal-Wallis, and Post-Hoc Multiple Comparisons tests.
Results:
In terms of bond strength values, the highest bond value was seen in the two-step self-etch (Clearfil SE Protect) group, and the lowest bond strength value was seen in the universal system (Clearfil S3 Bond Universal) group. There was no statistically significant difference between the adhesive agent groups in terms of bond strength values (p>0.05).
Conclusion:
It is thought that choosing the two-step self-etch technique as an adhesive system when resin-modified glass ionomer enhanced with bioactive glass (ABA/BL) is used as the pulp capping/base material will be more appropriate in terms of bond strength.
Keywords:  adhesive systems, bioactive materials, bond strength, cariostatic agents, composite resins, dental materials, fluorides, glass ionomer, glass ionomer cements, materials testing, vital pulp therapy
   
   
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