Microtensile Bond Strength of Fiber-Reinforced and Particulate Filler Composite to Coronal and Pulp Chamber Floor Dentin

Baraba, Anja; Cimic, Samir; Basso, Matteo; Ionescu, Andrei C.; Brambilla, Eugenio; Miletić, Ivana

doi:10.3390/ma14092400

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Microtensile Bond Strength of Fiber-Reinforced and Particulate Filler Composite to Coronal and Pulp Chamber Floor Dentin

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Department of Endodontics and Restorative Dentistry, School of Dental Medicine, Gunduliceva 5, 10 000 Zagreb, Croatia

Department of Removable Prosthodontics, School of Dental Medicine, Gunduliceva 5, 10 000 Zagreb, Croatia

Department of Dentistry, Galeazzi Institute, University of Milan, via R. Galeazzi 4, 20161 Milan, Italy

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Department of Biomedical, Surgical and Dental Sciences, Oral Microbiology and Biomaterials Laboratory, University of Milan, via Pascal, 36, 20133 Milan, Italy

Author to whom correspondence should be addressed.

Academic Editors: Nikolaos Silikas and Javier Gil

Materials 2021, 14(9), 2400; https://doi.org/10.3390/ma14092400

Received: 1 March 2021 / Revised: 15 April 2021 / Accepted: 30 April 2021 / Published: 5 May 2021

(This article belongs to the Special Issue Dental Bulk-Fill Composite Resins)

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Abstract

This ex vivo study aimed to compare the microtensile bond strength of fiber-reinforced and particulate filler composite to coronal and pulp chamber floor dentin using a self-etching adhesive system. Coronal dentin of 40 human molar teeth was exposed by cutting occlusal enamel with a low-speed saw. Teeth were then randomly divided into two groups (n = 20). The first group was left as is, while in the second group, pulp chamber floor dentin was exposed by trepanation. After placement of a self-etching adhesive system (G-aenial Bond, GC, Tokyo, Japan), groups were further divided into two sub-groups (n = 10) according to the type of composite: fiber-reinforced composite (EP, everX Posterior, GC, Tokyo, Japan) and particulate filler composite (GP, G-aenial Posterior, GC, Tokyo, Japan). Then, composite blocks were built up. Sticks (1.0 × 1.0 mm²) were obtained from each specimen by sectioning, then microtensile bond strength (μTBS) test was performed. Statistical analysis included one-way ANOVA test and Student’s t-test (p < 0.05). μTBS values were 22.91 ± 14.66 and 24.44 ± 13.72 MPa on coronal dentin, 14.00 ± 5.83 and 12.10 ± 8.89 MPa on pulp chamber floor dentin for EP and GP, respectively. Coronal dentin yielded significantly higher μTBS than pulp chamber floor dentin (p < 0.05), independently from the tested composites. View Full-Text

Keywords: microtensile bond strength test; fiber-reinforced composite; particulate filler composite

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MDPI and ACS Style

Baraba, A.; Cimic, S.; Basso, M.; Ionescu, A.C.; Brambilla, E.; Miletić, I. Microtensile Bond Strength of Fiber-Reinforced and Particulate Filler Composite to Coronal and Pulp Chamber Floor Dentin. Materials 2021, 14, 2400. https://doi.org/10.3390/ma14092400

AMA Style

Baraba A, Cimic S, Basso M, Ionescu AC, Brambilla E, Miletić I. Microtensile Bond Strength of Fiber-Reinforced and Particulate Filler Composite to Coronal and Pulp Chamber Floor Dentin. Materials. 2021; 14(9):2400. https://doi.org/10.3390/ma14092400

Chicago/Turabian Style

Baraba, Anja, Samir Cimic, Matteo Basso, Andrei C. Ionescu, Eugenio Brambilla, and Ivana Miletić. 2021. "Microtensile Bond Strength of Fiber-Reinforced and Particulate Filler Composite to Coronal and Pulp Chamber Floor Dentin" Materials 14, no. 9: 2400. https://doi.org/10.3390/ma14092400

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Microtensile Bond Strength of Fiber-Reinforced and Particulate Filler Composite to Coronal and Pulp Chamber Floor Dentin

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