Effects of the Addition of Titanium Dioxide and Silaned Silica Nanoparticles on the Mechanical Properties of Maxillofacial Silicones

Abstract

Results in this in vitro study may clarify future studies about the effect of different additives on the physical and mechanical properties of maxillofacial elastomers. There is a great interest in the effect of a new-generation hydrophobic silica incorporation into A-2000 silicone as well as the effect of fumed hydrophilic silica incorporation into A-2006 silicone. Future research should be supported with more in vitro trials in different percentages of such additives used in this study.

The Influence of Filler Particles on the Mechanical Properties of Maxillofacial Prosthetic Silicone Elastomers: A Systematic Review and Meta-Analysis

“…Titanium dioxide (TiO 2 ) is a commonly used filler, and can be safely applied up to a concentration of 25% in cosmetics and silicones [ 8 ]. Nano sized silica/silicone dioxide (SiO 2 ), titanium dioxide (TiO 2 ), zinc oxide (ZnO) and cerium oxide (CeO 2 ) are good nano particles, but improvements in the material properties are concentration-specific, and not solely dependent on the type of nano oxide chosen [ 17 ].…”

“…Tukmachi et al [ 21 ] showed significant improvements in tensile (2.11 MPa), tear strength (10.9 N/mm) and elongation at break (278.8%) at a 5% concentration, and hardness was increased by 8.36 Shore A at a 6% concentration of SiO 2 . Cevik et al’s [ 17 ] study suggested that the addition of TiO 2 to 10% silica yielded the best results (approx. 10.5 Shore A improvement) after weathering.…”

Effect of Extraoral Aging Conditions on Mechanical Properties of Facial Silicone Elastomer Reinforced With Titanium-Oxide Nanoparticles (In Vitro Study)

“…They are characterized by their minute particle size, large specific area, active function, and strong interfacial interaction with the organic polymer. Therefore upon addition to silicone matrix it provide resistance to environmental stress cracking and aging, and also improve the physical and mechanical properties of the organic polymer (34,35). Titanium dioxide NPs are widely used as inorganic UV absorbers in nanotechnology applications.…”

“…The effect of ageing can lead to falling of physical and mechanical properties of the silicone elastomer, reduction in the life of facial epitheses, which gradually leads to replacement (2,35). Comparison between results is much difficult due to diversity of maxillofacial prosthetic materials tested, experimental testing and parameters used to control simulated aging modes.…”

In Vitro Cytotoxicity of Maxillofacial Silicone Elastomers: Effect of Nano‐particles

“…Cevik and Eraslan evaluated the effect of different kinds of silica and nanosized TiO 2 addition on the mechanical properties (hardness, tensile strength, tear strength, percent elongation) of A‐2000 and A‐2006 silicone elastomers. They indicated that the tensile strength of the A‐2006 group with the addition of fumed hydrophilic silica was higher than that of the group with the addition of TiO 2 .…”