Silica-filled methacrylic composites with extremely high compressive strength

SYLOID (R) 244 has never been applied as a filler in composites with potential dental application. Therefore, the aim of research was to apply this silica in its unmodified and diazonium salt-modified forms in different mass ratios as fillers in light-cured methacrylic composites. The effectiveness of modification process was confirmed with the use of Raman spectroscopy. Methacrylic composites with the modified and unmodified SYLOID (R) 244, as well as unfilled resin as a control group were prepared. Their basic physicochemical properties, such as depth of cure, mass stability during incubation in saline, flexural and compressive strengths were examined. A positive effect of SYLOID (R) 244 modification on the properties of the examined composites was also demonstrated. The obtained results proved the high applicability of SYLOID (R) 244 as a filler in composites with potential dental applications.