Influence of filler characteristics on the performance of dental composites: A comprehensive review

Elfakhri, Farah; Alkahtani, Rawan; Li, Chunchun; Khaliq, Jibran

doi:10.1016/j.ceramint.2022.06.314

Cited by 70 publications

(54 citation statements)

References 172 publications

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“…The observation of spherical-shaped filler particles might have a potential lubricating effect on the substance, which would allow the materials to flow more freely while having no effect on its viscosity [ 35 ]. It was demonstrated in a previous study that adding a silica filler to the resin materials might influence the radiopacity [ 36 ], and the addition of filler particles might have an influence on reduced degradation [ 37 ]. On the other hand, the SEM images show smaller filler particles in HL than PV and AP.…”

Section: Discussionmentioning

confidence: 99%

Influence of Novel Experimental Light-Cured Resin Cement on Microtensile Bond Strength

et al. 2022

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The purpose of this study was to evaluate the microtensile bond strength (µTBS) and Knoop hardness number (KHN) of a novel experimental light-cured resin cement (HL). Eighteen flat dentin surfaces of human molars were polished using #600 SiC paper and bonded to CAD/CAM resin blocks with the respective resin cements and composites: HL, Panavia V5 (PV), and Clearfil AP-X (AP). All specimens were stored in distilled water at 37 °C for 24 h and 7 days. Scanning electron microscope (SEM) and energy dispersive X-ray (EDX) observations were performed to evaluate filler morphology and to detect the elements. The resin cements had a significant effect on the immediate µTBS (F = 22.59, p < 0.05) and after water storage µTBS (F = 22.83, p < 0.05). Significant differences (p < 0.05) in the KHN between the tested materials were observed, and HL indicated the highest KHN when compared with PV. HL showed a combination of the regular-shaped filler and spherical-shaped filler within the matrix. Silicon was detected in HL from the EDX evaluation. HL exhibited better bonding performance and polymerization, which may have contributed to the improvement of the adhesive strength.

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Section: Discussionmentioning

confidence: 99%

Influence of Novel Experimental Light-Cured Resin Cement on Microtensile Bond Strength

et al. 2022

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“…Adsorption of (bio)molecules, addition of functional groups, and alteration of the filler surface charge induce antimicrobial selectivity toward certain bacteria [ 102 ]. In dental composites, the amount of filler influences the performance (structural, aesthetic, chemical, biological) of the material [ 103 ]. For example, adding ZnO NPs up to 7.5% into a standard dental adhesive promoted a substantial bacterial reduction of biofilms while maintaining an acceptable degree of conversion, flexural strength, and elastic modulus [ 104 ].…”

Section: Smart Dental Materials For Antimicrobial and Antibiofilm The...mentioning

confidence: 99%

Smart dental materials for antimicrobial applications

Montoya

Roldán

et al. 2023

Bioactive Materials

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“…The polymer matrix is formed from resin and the fillers are generally ceramics like silica, quartz, barium, or strontium glasses. The most commonly‐used resins for dental composites include 2,2‐bis [4(2‐hydroxy‐3 methacryloyloxy‐propyloxy)‐ phenyl] propane (bis‐GMA), urethane dimethacrylate (UDMA), and triethylene glycol dimethacrylate (TEGDMA) 12,13 . Prior research has shown that resin‐based dental composites can be affected by adsorption of water into the polymer matrix during incubations with artificial saliva 14 .…”

Section: Introductionmentioning

confidence: 99%

“…The most commonly-used resins for dental composites include 2,2-bis [4(2-hydroxy-3 methacryloyloxy-propyloxy)phenyl] propane (bis-GMA), urethane dimethacrylate (UDMA), and triethylene glycol dimethacrylate (TEGDMA). 12,13 Prior research has shown that resin-based dental composites can be affected by adsorption of water into the polymer matrix during incubations with artificial saliva. 14 This can impact strength due to polymer solubility, movement of chain segments, and water retention in the interfacial area, as well as dissolution and leaching of the organic polymers and the inorganic filler particles.…”

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confidence: 99%

The impact of long‐term aging in artificial saliva media on resin‐based dental composite strength

et al. 2022

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Although salivary liquid can degrade constituents in resin-based dental composites in short-term incubations, there is a knowledge gap on how longer-term aging impacts their bulk strength. We address this through extended aging studies with resin-based dental composites in different environments. Two commercial composites (FIL and AEL) were aged aseptically at 37 C in air (A, control), artificial saliva (AS), and esterase enzyme amended AS (EAS). Diametral and pushout strength were measured after periods of 120-180 days. At 120 days, the diametral strength of composites aged in air was 69.9 ± 11.0 and 57.7 ± 3.31 MPa in FIL and AEL, respectively. These were significantly greater compared to composites aged in AS (32.1 ± 7.01 and 46.2 ± 9.38 MPa in FIL and AEL, respectively) or EAS (36.7 ± 8.49 and 43.5 ± 5.51 MPa in FIL and AEL, respectively). In contrast, pushout strength for both composites were smaller in A compared to those aged in AS and EAS, results attributed to AS absorption and polymer expansion. No significant change in either diametral or pushout strength occurred after 120 days. There was no significant difference between aging in AS and EAS, suggesting that esterase did not significantly decrease the bulk material strength to a greater extent than AS under the test conditions. Aqueous diffusivities for the composites ranged from 8.4 to 11 Â 10 À13 m 2 /s, with associated porosities ranging from 0.06% to 0.10%. These results indicate that saturation of a typical dental composite occurs over a time frame of 4-5 months, longer than typical aging studies. Together, the results demonstrate the importance of aging time on composite strength.

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Influence of filler characteristics on the performance of dental composites: A comprehensive review

Cited by 70 publications

References 172 publications

Influence of Novel Experimental Light-Cured Resin Cement on Microtensile Bond Strength

Influence of Novel Experimental Light-Cured Resin Cement on Microtensile Bond Strength

Smart dental materials for antimicrobial applications

The impact of long‐term aging in artificial saliva media on resin‐based dental composite strength

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