ArticleACS omega2026
Physicomechanical Properties of a Technical Polyethylene Glycol-Silica-Based Hydrogel as an Alternative Low Shrinkage Dental Polymer Composite.
Article in ACS omega, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Dental composite resins are widely used in restorative dentistry; however, polymerization shrinkage leads to marginal gaps and reduced bond strength. An expandable hydrogel monomer can reduce shrinkage, but it may lack sufficient mechanical strength when used alone. This study developed a low-shrinkage dental composite by incorporating an expandable hydrogel monomer to counteract volumetric shrinkage after curing, aiming to maintain strong bonding to tooth structure. Polyethylene glycol 400 (PEG 400) was chemically modified with acryloyl chloride to produce diacrylated polyethylene glycol 400 (DAPEG 400) expandable hydrogels, which was formulated with silica filler loadings by weight. Statistical analysis involved the Shapiro-Wilk test and one-way ANOVA. A synthesized expandable monomer with good polymerization shrinkage properties and the incorporation of silica filler significantly enhanced the mechanical properties compared to pure cured DAPEG 400, with flexural and compressive strengths reaching 10.27 MPa (standard deviation (SD) = 0.96) and 441.42 MPa (SD = 2.80), respectively. The composite also demonstrated improved dimensional stability, showing 475.32 μg/mm
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Registered trials
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