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The International Journal of Esthetic Dentistry

Edited by Alessandro Devigus, DMD

Official publication of the European Academy of Esthetic Dentistry, the Arabian Academy of Esthetic Dentistry, the British Academy of Aesthetic Dentistry, the Hellenic Academy of Esthetic Dentistry, the Scandinavian Academy of Esthetic Dentistry and the South African Academy of Aesthetic Dentistry

ISSN 1862-0612


Spring 2019
Volume 14 , Issue 1

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Shear bond strength of two composite resin cements to multiphase composite resin after different surface treatments and two glass-ceramics

Maurits C. F. M. de Kuijper, MSc / Marco M. M. Gresnigt, DMD, PhD / Wouter Kerdijk, PhD / Marco S. Cune, DMD, PhD

Pages: 40–50

Aim: To compare the shear bond strength (SBS) after aging of two dual-curing composite resin cements to multiphase composite resin (experiment) and glass-ceramics (control).

Methods: Seventy computer-aided design/computer-aided manufacturing (CAD/CAM) blocks were prepared: 24 multiphase composite resin blocks (Lava Ultimate; experiment), and 12 control blocks (groups 5 and 6: 6 IPS e.max CAD, 6 IPS Empress CAD). Surface treatments of the experiment groups were: 1) Al2O3 airborne particle abrasion; 2) bur-roughening; 3) silica-coated aluminum oxide particle abrasion; and 4) hydrofluoric (HF) acid etching. Per study group, Variolink II (a) and RelyX Ultimate (b) were used as cements. Per treatment group, four cement cylinders were adhered to the conditioned blocks (n = 12). After thermocyclic aging (10.000x, 5°C to 55°C), notch-edge shear testing was applied. Modes of failure were examined. A P value of 0.05 was considered significant.

Results: Groups 1a (18.68 ± 3.81) and 3a (17.09 ± 3.40) performed equally to 6a (20.61 ± 4.10). Group 5a (14.39 ± 2.80) did not significantly differ from groups 1a, 3a, and 4a (15.21 ± 4.29). Group 2a (11.61 ± 3.39) showed the lowest bond strength. For the RelyX Ultimate specimens, mean bond strengths were: 1b (18.12 ± 2.84) > 4b (15.57 ± 2.31) > 2b (12.34 ± 1.72) = 3b (11.54 ± 2.45) = 6b (12.31 ± 1.87) > 5b (0.78 ± 0.89). Failure mode analysis showed a significant association between bond strength values and modes of failure (chi-square).

Conclusion: The SBS of the composite cements to the multiphase composite resin that was treated by Al2O3 or silica-coated aluminum oxide particle abrasion is comparable to the bond of the control groups.

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