Physical properties of a new silorane-based restorative system.
OBJECTIVE
To distinguish the physical properties of a new silorane-based restorative material in comparison to five methacrylate-based restorative materials--a compomer, giomer, nanocomposite, hybrid and micro-hybrid.


METHODS
The following properties were examined per restorative material: compressive strength, diametral tensile strength, flexural strength/modulus, fracture toughness, microhardness, and polymerization shrinkage. The mean and standard deviation were determined per group. A one-way ANOVA/Tukey was performed per property (alpha=0.05).


RESULTS
Significant differences were found between groups per property (p<0.001).


CONCLUSIONS
Compared to the methacrylate-based restorative materials, the new silorane-based material had the lowest polymerization shrinkage, but an overall mixed mechanical performance. The silorane-based material had relatively higher flexural strength/modulus, fracture toughness, but relatively lower compressive strength and microhardness than the methacrylate-based restorative materials.
Lien
Wen
W
Advanced Education in General Dentistry Residency, Wilford Hall Medical Center, Lackland AFB, TX 78236, USA.
Vandewalle
Kraig S
KS
D020770:Compomers; D003188:Composite Resins / Q000737:chemistry; D019245:Compressive Strength; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000379:methods*; D003799:Dental Stress Analysis; D004548:Elasticity; D004852:Epoxy Compounds / Q000737:chemistry*; D005899:Glass Ionomer Cements; D006244:Hardness; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D053761:Nanocomposites; D044367:Phase Transition; D012821:Silanes / Q000737:chemistry*; D013718:Tensile Strength
D020770:Compomers; D003188:Composite Resins; D004852:Epoxy Compounds; C543062:Filtek LS Low Shrink resin; D005899:Glass Ionomer Cements; D008689:Methacrylates; D012821:Silanes