Maxillofacial materials reinforced with various concentrations of polyhedral silsesquioxanes

• Published in: Journal of dental biomechanics 2010, Vol.2010 (1), p.701845-701845
• Main Authors: Mohammad, Sharif A, Wee, Alvin G, Rumsey, Deborah J, Schricker, Scott R
• Format: Article
• Language: English
• Subjects: Maxillofacial prosthesis; Properties; Strength of materials
• ISSN: 1758-7360; 1758-7360
• DOI: 10.4061/2010/701845

This study evaluates two mechanical properties, tensile strength and tear strength, of maxillofacial materials reinforced with functional polyhedral silsesquioxane (POSS) nanoparticles at 0.0, 0.5, 1.0, 2.0, and 5.0% (mass/mass) loading. Adding POSS was found to significantly affect the overall tensile strength and extensibility of the maxillofacial material. Significant differences were found in mean peak load (p = .050) and extension before failure (p = .050), respectively, between concentrations of 0% and 5%. For tear resistance, a significant difference was observed in mean load (p = .002) between concentrations of 1% and 5%. Significant differences were also observed in extension before failure between concentrations of 0% and 1% (p = .002) and between 0% and 2% (p = .002). Increased resistance to tensile or shearing stresses could lead to greater clinical longevity. The following results suggest that functional nanoparticles can be used to improve properties without compromising clinical handling.