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The Journal of Adhesive Dentistry
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J Adhes Dent 22 (2020), No. 1     14. Feb. 2020
J Adhes Dent 22 (2020), No. 1  (14.02.2020)

Page 99-105, doi:10.3290/j.jad.a43996, PubMed:32030380


Enamel and Dentin Bond Durability of Self-Adhesive Restorative Materials
Latta, Mark A. / Tsujimoto, Akimasa / Takamizawa, Toshiki / Barkmeier, Wayne W.
Purpose: To use shear bond strength (SBS) and shear fatigue strength (SFS) testing to determine the durability of adhesion of self-adhesive restorative materials compared to composite resin bonded with a universal adhesive.
Materials and Methods: A universal adhesive, Prime & Bond Active, was used in self-etch mode to bond Z-100 composite resin to enamel and dentin. Three commercially available restorative materials and one experimental material with self-adhesive properties, Activa (A), Fuji II LC(F), and Equia Forte (E) and ASAR-MP4 (S) were also bonded to enamel and dentin. The SBS and SFS were determined for all materials. A staircase method was used to determine the SFS with 10 Hz frequency for 50,000 cycles or until failure occurred.
Results: On enamel, S generated similar values to the adhesive/composite materials and higher values than F, E, and A. On dentin, the composite/universal adhesive showed significantly higher SBS and SFS than the self-adhesive materials. S, F, and E generated higher values than A on dentin.
Conclusion: SBS and SFS values to enamel were similar for all materials tested except Activa which generated lower enamel values. On dentin surfaces, the self-adhesive materials generated similar SBS and SFS, with the exception of Activa. Those values were lower than that generated with composite resin and a universal adhesive.

Keywords: adhesion to dental hard tissues, fatigue testing, glass ionomers, bond durability, self-adhesive restoratives