Water adsorption characteristics of new dental composites

Al-Bader, Rafed. M; Ziadan, Kareema M.; Al-Ajely, Mohammad S

doi:10.5958/2319-5886.2015.00052.1

Cited by 9 publications

(11 citation statements)

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“…This was validated with studies which showed that higher modulus was associated with higher filler content [11,32]. Lower water absorption was also observed with higher filler loading [33], which has positive effects on structural stability and mechanical properties [34]. Besides higher filler loading, the addition of quartz filler (silicone dioxide) in SF2 caused the material to be less susceptible to aqueous attack, thus having higher values in all storage media [10].…”

Section: Discussionsupporting

confidence: 69%

Effect of Dietary Challenges on the Flexural Properties of Resin-based Composites

Yahya

Lim

Gonzalez

2021

ADUM

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This study aims to compare flexural strength and flexural modulus of different resin-based composites (RBCs) and to determine the impact of dietary solvents on flexural properties. Forty specimens (12x2x2mm) for each of two conventional (Aura Easy [AE]; Harmonize [HN]) and one bulk fill (Sonic Fill 2 [SF2]) were fabricated using customised plastic moulds. Specimens were light-cured, measured and randomly divided into four groups. The groups (n=10) were conditioned for 7 days at 37°C: in one of media: air (control), artificial saliva (SAGF), 0.02N citric acid and 50% ethanol–water solution. After conditioning, the specimens subjected to flexural testing. Two-way ANOVA and one-way ANOVA (post hoc: Tukey’s or Dunnett T3 tests) were used at a=0.05. Significant differences in flexural properties were observed between materials and conditioning media. Flexural strength and modulus values ranged from 124.85MPa to 51.25MPa; and 6.76GPa to 4.03GPa, respectively. The highest flexural properties were obtained with conditioning in air. Exposure to aqueous solutions generally reduced flexural properties. In conclusion, the effect of dietary solvents on flexural properties were material and medium dependent. For functional longevity of restorations, patients’ alcohol intake should be considered during material selection. Dietary advice (reduce alcohol consumption) should be given to patients post operatively.

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Section: Discussionsupporting

confidence: 69%

Effect of Dietary Challenges on the Flexural Properties of Resin-based Composites

Yahya

Lim

Gonzalez

2021

ADUM

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“…This behavior can be attributed to the fact that the presence of polar and hydrophilic functional groups in acrylic resins may increase their polarity and facilitate the uptake of storage solution to form primary and secondary hydration shells around the polar groups via hydrogen bonding. Al-Bader et al 2 stated that water molecules are able to diffuse through the interchain spaces of the resin matrix because of their small radius size, which is less than 0.158 nm and smaller than the interchain spaces of the matrix. In addition, the Un-NBT/PMMA samples exhibited the highest values of SBF uptake and solubility because of their poorly bonded area and weak interfacial adhesion between the NBT and PMMA, leading to accumulation of water molecules at the interfacial region.…”

Section: Behavior In Sbfmentioning

confidence: 99%

“…1 PMMA dentures can gain weight from water uptake or lose weight from dissolution in the water when exposed to or stored in water. 2 The development of hydrolytically stable dental resin composites is an important goal in dental materials research. The interface stability in the oral environment and the capability to transfer stresses between the matrix and filler phases during mastication is especially significant properties for dental composites.…”

Section: Introductionmentioning

confidence: 99%

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The influence of titanate coupling agent on the performance of barium titanate/PMMA denture base nanocomposites after SBF storage

Elshereksi

Muchtar

Azhari

2020

Journal of Thermoplastic Composite Materials

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Poly(methyl methacrylate) (PMMA)/nanobarium titanate (NBT) composite has potential application in denture base materials. The denture base materials should be stable in the wet environment and exhibit good mechanical properties. This study aimed to evaluate the effectiveness of titanate coupling agent (TCA) on NBT behavior after soaking in the simulated body fluid (SBF) and to determine the effect of SBF exposure on fracture toughness of the PMMA nanocomposites. Silanated (Si-NBT), titanated (Ti-NBT), and pure NBT (Un-NBT) at 5% concentration (by mass) were incorporated in the PMMA matrix. NBT was sonicated in MMA prior to mixing with PMMA. SBF absorption, solubility, and leaching were measured, and fracture toughness of the PMMA nanocomposites was evaluated after soaking. The results showed that Titanated samples displayed lower SBF absorption capability and solubility values than the silanated ones. Moreover, the leachability of filler elements (Ba and Ti) was substantially reduced by titanation (54% and 61%, respectively), whereas the Si-NBT/PMMA revealed values of 12.3% and 7% respectively. Significant differences in fracture toughness were observed among the tested samples after 6 weeks of aging in SBF ( p < 0.05). Although no notable changes in the KIC of pure PMMA and Un-NBT/PMMA samples were detected, KIC was improved by 20% after titanation. In addition, the fracture toughness of the titanated samples was higher than that of the silanated ones by 26%. In conclusion, TCA exhibited better stability in moisture than silane. Degradation resistance to moisture obtained with titanated NBT could lead to the promotion of clinical longevity of the composites.

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“…Previous studies have explained that color changes occurring during composite resin restoration have a correlation with water absorption [11]. In addition, water absorption is related to filler leaching [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Comparison and correlation of nanofiller and nanohybrid color stabilities with barium leaching

Nasution

Maria

Suprastiwi³

et al. 2020

jos

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Water adsorption characteristics of new dental composites

Cited by 9 publications

References 0 publications

Effect of Dietary Challenges on the Flexural Properties of Resin-based Composites

Effect of Dietary Challenges on the Flexural Properties of Resin-based Composites

The influence of titanate coupling agent on the performance of barium titanate/PMMA denture base nanocomposites after SBF storage

Comparison and correlation of nanofiller and nanohybrid color stabilities with barium leaching

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