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The Impact of Silanized Graphene Nanoparticles on Selected Mechanical and Physical Properties of a Heat-Cured Acrylic-Based Soft Liner
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AM Habeeb *    , GH Jani |
| 1.Department of Prosthodontics, College of Dentistry, Baghdad University, Baghdad, Iraq. , aya.habeeb2201@codental.uobaghdad.edu.iq |
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Abstract: (12 Views) |
Background and Objective: Soft liners are polymers that provide comfort to the tissues by acting as a cushion between the soft tissue surface and the hard acrylic. Since soft liners have demonstrated numerous drawbacks, the properties of soft lining materials must be enhanced. This study aimed to assess the effects of different proportions of silanized graphene nanoparticles on the mechanical and physical properties of soft denture lining materials, including shear bond strength, thermal conductivity, and water sorption and solubility.
Methods: In this laboratory study, 90 samples were fabricated and divided into three groups, each comprising three subgroups (n=10). The control groups consisted of soft liners made of heat-cured acrylic without silanized graphene nanoparticles, while the experimental groups consisted of soft liners made of heat-cured acrylic containing 0.5% and 1% silanized graphene nanoparticles. Disc-shaped soft liner samples with a diameter of 50 mm and a thickness of 0.5 mm were produced and evaluated according to ISO 20795-1:2013 (E) for the physical assessment of solubility and water sorption.
Findings: Shear bond strength was recorded as 0.54±0.39 in the control group compared with 0.54±0.29 in the 0.5% group (p=0.000). The thermal conductivity test demonstrated a significant increase in mean values, from 0.18±0.01 in the control group to 0.55±0.04 in the 1% group (p=0.000). In contrast, the water sorption and solubility test revealed a decrease in mean values.
Conclusion: The results of the present study demonstrated that the incorporation of SGNPs into the heat-cured soft denture lining material was effective in reducing both solubility and sorption levels. Additionally, the mechanical property of shear bond strength was improved. Moreover, the thermal conductivity of the heat-cured soft denture lining material increased significantly as the concentration of SGNPs increased. |
Article number: e63 |
| Keywords: Soft Liner, Denture Base, Graphene, Nanoparticles, Nanotechnology. |
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Full-Text [PDF 1153 kb]
(8 Downloads)
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Type of Study: Research |
Subject:
Restorative Dentistry
Received: 2025/02/16 | Accepted: 2025/04/21 | Published: 2026/11/11
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