Micromechanical interlocking structure at the filler/resin interface for dental composites: a review

Zhang, Shuning; Wang, Xiao; Jiang, Yang; Chen, Hongyan; Jiang, Xinquan

doi:10.1038/s41368-023-00226-3

Cited by 10 publications

(2 citation statements)

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“…A variety of curing modes to improve the polymerization dynamics for clinical dental resin composites (DRCs) have been developed by research, including self‐cure, light‐cure, and dual‐cure DRCs 5 . While different techniques have been used to improve the mechanical and physical properties of DRCs, optimizing the interface interaction between fillers (inorganic) and resin matrix (organic) has proven to be one of the most successful strategies 6 . Another way to improve filler/resin interfacial interaction is by modifying the fillers, which further improves the comprehensive properties of DRCs 6 .…”

Section: Introductionmentioning

confidence: 99%

“…While different techniques have been used to improve the mechanical and physical properties of DRCs, optimizing the interface interaction between fillers (inorganic) and resin matrix (organic) has proven to be one of the most successful strategies 6 . Another way to improve filler/resin interfacial interaction is by modifying the fillers, which further improves the comprehensive properties of DRCs 6 . However, with the increase in molecular weight of filler (which can enhance the mechanical properties 7 ), light‐cured composites suffer from high polymerization shrinkage (in the range of 2–6%) 8 .…”

Section: Introductionmentioning

confidence: 99%

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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: Introductionmentioning

confidence: 99%