Influence of silane coupling agent on the mechanical performance of flowable 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.2022.06.002

Cited by 12 publications

(5 citation statements)

References 55 publications

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“…The elastic modulus from the flexural and compressive tests provides insight into the materials' rigidity. 29 A material with a higher elastic modulus has been shown to require more stress for the same degree of deformation, 30,31 thereby giving a more rigid property. The results from this study showed that there is a strong correlation between the elastic modulus and the filler content wt.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

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%

“…The elastic modulus from the flexural and compressive tests provides insight into the materials’ rigidity 29 . A material with a higher elastic modulus has been shown to require more stress for the same degree of deformation, 30,31 thereby giving a more rigid property.…”

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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“…Then, we evaluated the effect of silanization on the experimental silane coupling agent containing 3-(methacryloyloxy) propyl trimethoxy silane (γ-MPTS) for SiC fibers on the flexural properties of an experimental SiC fiber-reinforced resin. Gamma-MPTS is widely used for silanizing materials that contain silica [19,20]. From the results of our previous study, it was suggested that silanization for SiC fibers improved the flexural strength and modulus of the SiC fiber-reinforced resin.…”

Section: Introductionmentioning

confidence: 99%

“…Chemical adhesion between the matrix resin and reinforcing materials is important to improve mechanical properties and the long-term stability of composites like fiberreinforced resin [19,20]. Some SiC fibers contain approximately 10 wt% oxygen [16], and Si-OH can exist on the surface of the fibers.…”

Section: Introductionmentioning

confidence: 99%

Effect of Silicon Carbide Fiber Length on the Flexural Strength and Flexural Modulus of Short Silicon Carbide Fiber-Reinforced Resin

Taka,

Aoyagi,

Miida

et al. 2024

JFB

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Silicon carbide fibers have superior flexural properties and chemical stability compared to glass fibers. We investigated the flexural strength and modulus of an experimental, short silicon carbide fiber-reinforced resin. Short silicon carbide fibers with lengths of ~0.5, 1, 2, and 3 mm were prepared and silanized. Urethane dimethacrylate and triethylene glycol dimethacrylate were mixed at a 70:30 wt% ratio and used as the matrix resins. Each length of short silicon carbide fibers and the matrix resin were combined using a mixing machine and then used for specimen preparation. The three-point bending test conditions were in accordance with ISO 4049:2009. The fracture surfaces of the specimens after the three-point bending test were observed using secondary electron images. The data were statistically analyzed with a one-way analysis of variance and Tukey’s HSD test (α = 0.05). The flexural strength and modulus of the specimens containing 2 mm or 3 mm silicon carbide fibers were significantly higher than the other specimens. The river pattern was observed more clearly in specimens containing shorter silicon carbide fibers, although this pattern was observed in all specimens.

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“…To ensure the formation of a proper interphase, the filler is treated with coupling agents, generally silanes. The most widely used silane is γmethacryloxypropyltrimethoxysilane (MPS), capable of chemically interacting with both the matrix and the surface of the filler [15,16].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Silanization of Aerosil OX50 in the Properties of Light-Cured Dental Composites

Díaz-Rodríguez,

Tarano-Artigas,

Herrera-Kao

et al. 2024

Applied Sciences

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In this study, the surface of aerosil OX50 was treated with γ-methacryloxypropyltrimethoxysilane in order to evaluate its effect on light-cured dental composites. Four composites were prepared with Bis-GMA/tetraethylene glycol dimethacrylate/γ-methacryloxypropyltrimethoxysilane, Bis-GMA/tetraethylene glycol dimethacrylate, and a 45% treated or untreated aerosil OX50, using the camphorquinone/N,N-dimethylaminoethyl methacrylate pair as initiator. Evidence of filler silanization was provided by FTIR as a low-intensity absorption at 1707 cm−1 (carbonyl functional group) while thermogravimetric analysis showed a mass loss of approximately 2% associated with the decomposition of γ-methacryloxypropyltrimethoxysilane. The experimental composites studied meet the requirements of the ISO 4049:2019 standard for depth of cure, water sorption, and solubility. The composites are shown to be thermally stable and presented a degree of conversion higher than 70%, being higher than that reported for many commercial composites. Based on the observed properties, the best formulations were those in which the silane is incorporated into the matrix and the filler was previously treated.

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Influence of silane coupling agent on the mechanical performance of flowable fibre-reinforced dental composites

Cited by 12 publications

References 55 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

Effect of Silicon Carbide Fiber Length on the Flexural Strength and Flexural Modulus of Short Silicon Carbide Fiber-Reinforced Resin

Effect of the Silanization of Aerosil OX50 in the Properties of Light-Cured Dental Composites

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