ArticleJournal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]2025
Characterization of Universal Composite Resin Filler Particles.
Article in Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.], 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Effect of Polishing Systems and Accelerated Artificial Aging on the Optical Properties (Color and Translucency) and Surface Roughness of Single-Shade Resin Composites.Journal of functional biomaterials · 2026Article
- In Vitro Comparison of Mechanical and Esthetic Properties of Different Universal-Shade Resin Composites After Simulated Aging.Materials (Basel, Switzerland) · 2026Article
- Article
- The Shear Bond Strength of Gum-Imitating Composites with Traditional Composites-Preliminary Studies.Materials (Basel, Switzerland) · 2026Article
- The Influence of Filler Morphology and Loading Level on the Properties of Light-Curing Dental Composites.Dentistry journal · 2026Article
- Characterization of Universal Composite Resin Filler Particles.Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] · 2025Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveCharacterize the morphology and distribution of filler particles of universal composite resins using Scanning Electron Microscopy, and calculate the residual filler mass fraction (filler wt%) of each composite resin with Thermogravimetric Analysis to compare the data with the respective filler wt% reported in the literature.
methodsSeven universal composite resins (CRs) were analyzed in this study: Essentia Universal (EU), Filtek Easy Match (EM), Filtek Universal (FU), Omnichroma (OM), Simplishade (SS), TPH Spectra ST HV (ST), and Venus Diamond One (VO). Two classic multi-shade CRs, Charisma Opal (CO) and Estelite Omega (EO) were used as controls. Two grams of each CR were dissolved in acetone, and the respective filler residue was dried and mounted on aluminum stubs. The specimens were sputter-coated with Pt and observed under a Field-Emission Scanning Electron Microscope to analyze the particle size and distribution at magnifications from ×5000 to ×80,000. For the Thermogravimetric Analysis, CR specimens were continuously weighed while heating up to 1000
resultsElectron microscopy-OM showed a monomodal particle distribution of individual microparticles that contained nanoparticles. Sporadic agglomerations of microparticles were also observed for OM. EO, EU, FU, ST, VO, and EM displayed a bimodal filler distribution. The particles of CO and SS were organized under a trimodal distribution. There were similarities in particle shape and distribution for EM and FU, as well as for EO and OM. Classic particles of irregular shape larger than 2 μm were observed for CO, EU, ST, and VO. Clusters of nanoparticles up to 7.5 μm wide were observed for EM, FU, and SS. Thermogravimetric Analysis-The measured filler wt% was material specific. It ranged from 66.27% for EU to 78.28% for VO. The relative difference between the filler wt% measured for VO compared to the filler wt% reported in the literature was the smallest (-3.4%). EU resulted in the widest discrepancy (-18.2%).
conclusionThe particle size and distribution varied for each composite resin, except for the pairs of materials EO/OM and EM/FU made by the same manufacturer. The filler wt% measured in this study was not in agreement with the description provided in the current literature for any of the CRs tested.
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