Title :
Strength properties of light-cured dental restorative composites
Author :
Rafiee, M.A. ; Rafiee, J.
Author_Institution :
Dept. of Mech., Aerosp.& Nucl. Eng., Rensselaer Polytech. Inst., Troy, NY
Abstract :
The compressive strength of dental restorative composites was studied in this research. Cylindrical specimens were made according to manufacturers´ recommendations and stored for two weeks in distilled water at 37degC. Compressive strength was measured using a mechanical test machine with a cross-head speed of 0.5 mm/min; then, acquired data were analyzed using ANOVA and Weibull statistics. Among the studied composites, Filtekreg Z350 exhibited the highest compressive fracture strength which could be due to its filler fraction and proper combination of aggregated zirconia/silica cluster fillers in a uniform nanostructure.
Keywords :
Weibull distribution; biomedical materials; compressive strength; dentistry; fracture; silicon compounds; statistical analysis; zirconium compounds; ANOVA; Filtek Z350; Weibull statistics; ZrO2-SiO2; compressive fracture strength; compressive strength; light-cured dental restorative composite; mechanical test machine; silica cluster filler; temperature 37 degC; Analysis of variance; Data analysis; Dentistry; Manufacturing; Mechanical variables measurement; Silicon compounds; Statistical analysis; Testing; Velocity measurement; Water storage;
Conference_Titel :
Bioengineering Conference, 2009 IEEE 35th Annual Northeast
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-4362-8
Electronic_ISBN :
978-1-4244-4364-2
DOI :
10.1109/NEBC.2009.4967816
