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The Journal of Adhesive Dentistry



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J Adhes Dent 15 (2013), No. 4     7. Aug. 2013
J Adhes Dent 15 (2013), No. 4  (07.08.2013)

Page 385-391, doi:10.3290/j.jad.a28879, PubMed:23534021

Immediate Shear Bond Strengths of a Composite, a Compomer and a Glass Ionomer to a Ceramic Substrate
Cvikl, Barbara / Filipowitsch, Rene / Wernisch, Jörg / Raabe, Modesto / Gruber, Reinhard / Moritz, Andreas
Purpose: To determine the best-performing combination of three core buildup materials and three bonding materials based on their bond strength to ceramic blocks in vitro.
Materials and Methods: The materials used for core buildup were a composite (Tetric EvoCeram), a compomer (Compoglass F), and a glass-ionomer cement (Ketac Fil Plus), and for bonding, a three-step etch-and-rinse adhesive (Syntac), a two-step etch-and-rinse adhesive (ExciTE), and a single-step system (RelyX Unicem). Bond strength to ceramic blocks was determined by shear bond strength testing. Fracture behavior was evaluated by scanning electron microscopy.
Results: The highest adhesive values between buildup and ceramic were obtained using the materials Compoglass F and Syntac, followed by Compoglass F and ExciTE. Among the two other core buildups, Tetric EvoCeram performed better than Ketac Fil Plus, which was independent of the bonding materials. Adhesive fractures were characteristically observed with Syntac and ExciTE, and cohesive fractures were characteristically observed with RelyX Unicem.
Conclusion: These data show that compomers bonded with a multistep adhesive system achieved statistically significantly higher shear bond strength than composites and glass-ionomer cements. Within the limitations inherent to this in vitro study, the use of compomers for core buildup can be recommended.

Keywords: adhesive, core buildup, prosthodontic treatment, shear bond strength
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