IADR Abstract Archives
Study on Mechanical Properties of Temporary Resin Composites.
Objectives: The aim of this study was to evaluate mechanical properties of temporary resin composites.
Methods: Five kinds of temporary resin composites [Luxacrown (LC, DMG), Luxatemp (LT, DMG), Luxatemp Star (LS, DMG), Tempsmart (TS, GC) and Protemp 4 (P4, 3M ESPE)] were used, to investigate flexural strength, elastic modulus test were performed (n = 5 per group), and furthermore inorganic filler content was measured (n = 2 per group). Data were analyzed using one-way ANOVA and Bonferroni method.
Results: The flexural strength of LC (118.1 MPa) was significantly different higher compared with LT (81.7 MPa), LS (93.7 MPa) and P4 (81.0 MPa), and the elastic modulus of LC (5.8 GPa) was significantly different higher than other resin composites (p < 0.05). The inorganic filler content values of temporary resin composites were less than 50 wt%, and that of LC (43.5 wt%) was significantly different higher than other resin composites, and that of TS (24.1 wt%) was lowest (p < 0.05).
Conclusions: There was a low correlation between inorganic filler contents and flexural strength or elastic modulus. However, it was suggested that only Luxacrown was a high correlation between inorganic filler contents and flexural strength or elastic modulus. As a result, it was suggested that it is also related to the size or type of filler and kind of resin monomer, degree of polymerization at temporary resin composite, besides the filler content.
Methods: Five kinds of temporary resin composites [Luxacrown (LC, DMG), Luxatemp (LT, DMG), Luxatemp Star (LS, DMG), Tempsmart (TS, GC) and Protemp 4 (P4, 3M ESPE)] were used, to investigate flexural strength, elastic modulus test were performed (n = 5 per group), and furthermore inorganic filler content was measured (n = 2 per group). Data were analyzed using one-way ANOVA and Bonferroni method.
Results: The flexural strength of LC (118.1 MPa) was significantly different higher compared with LT (81.7 MPa), LS (93.7 MPa) and P4 (81.0 MPa), and the elastic modulus of LC (5.8 GPa) was significantly different higher than other resin composites (p < 0.05). The inorganic filler content values of temporary resin composites were less than 50 wt%, and that of LC (43.5 wt%) was significantly different higher than other resin composites, and that of TS (24.1 wt%) was lowest (p < 0.05).
Conclusions: There was a low correlation between inorganic filler contents and flexural strength or elastic modulus. However, it was suggested that only Luxacrown was a high correlation between inorganic filler contents and flexural strength or elastic modulus. As a result, it was suggested that it is also related to the size or type of filler and kind of resin monomer, degree of polymerization at temporary resin composite, besides the filler content.