Journal article
Evaluation of physico-mechanical properties and filler particles characterization of conventional, bulk-fill, and bioactive resin-based composites
Journal of the mechanical behavior of biomedical materials, Vol.115, 104288
03/2021
DOI: 10.1016/j.jmbbm.2020.104288
PMID: 33383377
Abstract
This study evaluated physical and mechanical properties and characterized the filler particles of seven composites.
Filtek Supreme (FS, 3M Oral Care), Forma (FO, Ultradent), Charisma Diamond (CD, Kulzer), Spectra Smart (SS, Dentsply), Filtek Bulk Fill (FB, 3M Oral Care), Tetric N-Ceram Bulk Fill (TB, Ivoclar), and Cention N (Ivoclar) in self- (CNSC) or dual-curing (CNDC) were evaluated. Fillers size, shape, and content were analyzed by scanning electron microscopy (SEM) and X-ray dispersive energy spectroscopy (EDX). Disk-shaped specimens (n = 5) were prepared for sorption (SP) and solubility (SL). Flexural strength and elastic modulus were tested at 24 h and 12 months (n = 10). Degree of conversion (DC%) and maximum rate of polymerization (Rpmax) were evaluated using micro-Raman spectroscopy. SP and SL results were submitted to Kruskal-Wallis one-way ANOVA and Dunn's pairwise test (α = 0.05). Mechanical properties were analyzed by 2-way ANOVA and Tukey's test (α = 0.05). DC% of CNSC and CNDC was compared by independent t-test (α = 0.05). Rpmax results were analyzed by 1-way ANOVA and Tukey's test (α = 0.05).
The composites differed regarding filler size, shape, and content. CD and CNSC showed lower SP than FS. SS had lower SL than CNSC and CNDC. CNDC presented higher DC% than CNSC. CD, TB, and CNDC showed the highest Rpmax. TB, CNSC, and CNDC showed the lowest 24-h flexural strengths. Mechanical properties of CD did not decrease, while FO, TB, and CNSC showed a significant reduction after storage.
Monomer composition and fillers characteristics greatly influenced the physico-mechanical properties of the tested composites.
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•Monomers and filler particles greatly influenced the properties of composites.•Light-curing improved the hydrolytic resistance of a bioactive dual-cure composite.•Alternative photoinitiators led to higher maximum rates of polymerization.•Sorption and solubility were greatly affected by monomer compositional variability.•Materials with pre-polymerized fillers showed lower mechanical properties.
Details
- Title: Subtitle
- Evaluation of physico-mechanical properties and filler particles characterization of conventional, bulk-fill, and bioactive resin-based composites
- Creators
- Vitaliano Gomes de Araujo-Neto - Universidade Estadual de Campinas (UNICAMP)Maicon Sebold - Universidade Estadual de Campinas (UNICAMP)Eduardo Fernandes de Castro - Universidade Estadual de Campinas (UNICAMP)Victor Pinheiro Feitosa - School of Dentistry, Faculty Paulo Picanço, Rua Joaquim Sá, 900, Dionísio Torres, Fortaleza, CE, BrazilMarcelo Giannini - Universidade Estadual de Campinas (UNICAMP)
- Resource Type
- Journal article
- Publication Details
- Journal of the mechanical behavior of biomedical materials, Vol.115, 104288
- Publisher
- Elsevier Ltd
- DOI
- 10.1016/j.jmbbm.2020.104288
- PMID
- 33383377
- ISSN
- 1751-6161
- eISSN
- 1878-0180
- Language
- English
- Date published
- 03/2021
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984654467402771
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