Polymer vs. Silicone Denture Liners: Tensile Strength with TiO2 and Thermocycling | ||||
| Al-Azhar Assiut Dental Journal | ||||
| Volume 8, Issue 1, April 2025, Page 47-57 PDF (2.54 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/aadj.2025.371501.1208 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
mohammad mahmoud elsokkary  ; Mohamad Hossam El-Din Helmy
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| Removable Prosthodontics, Faculty of Dentistry, Assiut University, Assiut, Egypt | ||||
| Abstract | ||||
| Aim : This study evaluated the tensile strength of polymer-based and silicone-based soft denture liners, with and without 2% titanium dioxide (TiO₂) nanoparticles, under thermocycling conditions. Subjects and methods: Specimens were fabricated using heat-cured acrylic resin discs coated with soft liners and subjected to thermocycling (3000 cycles, 5°C–55°C). Tensile strength was assessed using an Instron testing machine. Results: they showed that polymer-based liners had significantly higher tensile strength than silicone-based liners (p < 0.001). Thermocycling minimally affected polymer based liners but reduced the strength of silicone-based liners. The addition of TiO₂ nanoparticles did not significantly alter the tensile strength of either material (p > 0.05). Conclusions: Polymer-based liners demonstrated superior mechanical performance, indicating their potential for clinical applications. Further research is needed to optimize nanoparticle incorporation and evaluate long-term clinical outcomes. | ||||
| Keywords | ||||
| Tensile strength; Thermocycling; Titanium dioxide nanoparticles; Soft denture liners; Acrylic resin | ||||
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