Effect of silane coupling agent and concentration on fracture toughness and water sorption behaviour of fibre-reinforced dental composites

Varghese, Jerrin Thadathil; Cho, Ki Ho; Raju, Raju; Farrar, Paul; Prentice, Leon H.; Prusty, B. Gangadhara

doi:10.1016/j.dental.2023.03.002

Cited by 10 publications

(1 citation statement)

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“…[62][63][64][65] For the Sur_One, crack path observations showed clear interfacial separation between the filler particles and matrix. Studies 33,34,66,67 have shown that hydrated composites (water being a composition ingredient) had a lower degree of adhesion between the resin and filler, probably due to degradation of the resin matrix or the silane layer surrounding the filler particles from the excess amount of water. This could be the reason for low fracture toughness behaviour of Sur_One.…”

Section: Discussionmentioning

confidence: 99%

Comparative analysis of self‐cure and dual cure‐dental composites on their physico‐mechanical behaviour

Thadathil Varghese,

Raju,

Farrar

et al. 2023

Australian Dental Journal

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BackgroundClinical practitioners may have become familiar with the rapid transformation of dental composites. However, they may not scientifically understand the factors influencing the mechanical and physical properties. Scientific knowledge of filler‐resin interaction can significantly improve clinical understanding of resin composites. Several independent studies have examined the mechanical and physico‐mechanical properties of dental resin composites; however, no comprehensive study has examined the influence of fillers and resin materials on the physico‐mechanical properties of both self‐cure and dual‐cure composites.MethodsThis study performed investigations on the physico‐mechanical behaviour of four commercially available dual‐cure dental composites (Bioactive, Fill Up!, Surefil One, Cention N) and two commercially available self‐cure dental composites (Stela Capsule and Stela Automix). Test specimens for flexural and compressive strength, microhardness, fracture toughness, and hydrolytic behaviour were prepared and tested as per respective standards. The data sets were statistically analysed using one‐way ANOVA and Tukey's post‐hoc comparison.ResultsThere was a substantial variation in flexural strength and modulus values in this study, ranging from 32.0 to 113.4 MPa and 2.36 to 12.07 GPa, respectively. Similarly, there were significant differences in compressive strength between the materials in this study, ranging from 119.3 to 223.5 MPa. The highest fracture toughness value was found to be 1.41 MPa.m0.5, while the lowest value was 0.43 MPa.m0.5. Variations in surface microhardness were significant (24.11–68.0 N/mm2), which correlated with the filler content. Water sorption and solubility demonstrated high variations among materials, with Surefil One exceeding ISO 4049 thresholds significantly.ConclusionsA linear correlation can be established between surface microhardness (HV) and flexural and compressive moduli, as well as filler content (wt.%). However, both flexural and compressive strengths are impacted by the resin's constituent monomers and the resin‐filler matrix's cross‐linking capability. Additionally, factors such as filler size, shape, and the cross‐linking ability of the resin‐filler matrix play a crucial role in fracture toughness and the propagation of cracks within the restoration. Also, resin monomers and filler particle size affect the hydrolytic degradation characteristics of composites, which can also affect their mechanical properties. © 2023 Australian Dental Association.

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Section: Discussionmentioning

confidence: 99%

Comparative analysis of self‐cure and dual cure‐dental composites on their physico‐mechanical behaviour

Thadathil Varghese,

Raju,

Farrar

et al. 2023

Australian Dental Journal

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Effects of Hexagonal Boron Nitride and Mesoporous Silica Nanoparticles on the Morphology, Mechanical Properties and Antimicrobial Activity of Dental Composites

Kaptan Usul,

Aslan,

Lüleci

et al. 2024

J Clust Sci

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Hexagonal boron nitride (HBN), an artificial material with unique properties, is used in many industries. This article focuses on the extent to which hexagonal boron nitride and silica nanoparticles (MSN) affect the physicochemical and mechanical properties and antimicrobial activity of prepared dental composites. In this study, HBN, and MSN were used as additives in dental composites. 5% and 10% by weight of HBN are added to the structure of the composite materials. FTIR analysis were performed to determine the components of the produced boron nitride powders, hexagonal boron nitride-containing composites, and filling material applications. The structural and microstructural properties of dental composites have been extensively characterized using X-ray diffractometry (XRD). Surface morphology and distributions of nano boron nitride were determined by scanning electron microscopy (SEM)-EDS. In addition, the solubility of dental composites in water and their stability in water and chemical solution (Fenton) were determined by three repetitive experiments. Finally, the antimicrobial activity of dental composites was detected by using Minimum Inhibitory Concentration (MIC) measurement, as well as Minimum Fungicidal Concentration (MFC) method against yeast strain Saccharomyces cerevisiae, and Minimum Bactericidal Concentration (MBC) method against bacteria strains, Staphylococcus aureus and Escherichia coli. Since the HMP series have better antimicrobial activity than the HP series, they are more suitable for preventing dental caries and for long-term use of dental composites. In addition, when HMP and HP series added to the composite are compared, HMP-containing dental composites have better physicochemical and mechanical properties and therefore have a high potential for commercialization.

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Effect of volume fraction of cashew nut de-oiled husk biosilica on load-bearing properties of ramie fiber–reinforced vinyl ester resin composite

Gayathri,

Pragadish,

Bright

et al. 2023

Biomass Conv. Bioref.

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Effect of silane coupling agent and concentration on fracture toughness and water sorption behaviour of fibre-reinforced dental composites

Cited by 10 publications

References 53 publications

Comparative analysis of self‐cure and dual cure‐dental composites on their physico‐mechanical behaviour

Comparative analysis of self‐cure and dual cure‐dental composites on their physico‐mechanical behaviour

Effects of Hexagonal Boron Nitride and Mesoporous Silica Nanoparticles on the Morphology, Mechanical Properties and Antimicrobial Activity of Dental Composites

Effect of volume fraction of cashew nut de-oiled husk biosilica on load-bearing properties of ramie fiber–reinforced vinyl ester resin composite

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