1Department of Conservative Dentistry, College of Dentistry, Yonsei University, Korea.
2Department of Conservative Dentistry, School of Dentistry, Seoul National University, Korea.
Copyright © 2009 The Korean Academy of Conservative Dentistry
Calculated Linear Shrinkage (%) = Free Volume Shrinkage/3
Estimated Stress (MPa) = Calculated Linear Shrinkage × Tensile Modulus
Reduction in Stress (%) = 100 × (Estimated Stress - Measured Stress)/Estimated Stress
Calculated Linear Shrinkage (%) = Free Volume Shrinkage/3
Estimated Stress (MPa) = Calculated Linear Shrinkage × Tensile Modulus
Reduction in Stress (%) = 100 × (Estimated Stress - Measured Stress)/Estimated Stress
Materials used in the study.
The measured axial strains (µm) and shrinkage stresses (MPa) of three resin composites with compliance or without compliance (n=4).
Values with the same superscript letter in the same column are not statistically different.
The measured free volume shrinkage (%)4,8,28) and tensile modulus (GPa) of three resin composites (n=4).
The calculated linear shrinkage (%), estimated stress (MPa), and reduction in stress (%) between the estimated stress and measured stress in the experiment without compliance.
Calculated Linear Shrinkage (%) = Free Volume Shrinkage/3
Estimated Stress (MPa) = Calculated Linear Shrinkage × Tensile Modulus
Reduction in Stress (%) = 100 × (Estimated Stress - Measured Stress)/Estimated Stress
Values with the same superscript letter in the same column are not statistically different.
Calculated Linear Shrinkage (%) = Free Volume Shrinkage/3
Estimated Stress (MPa) = Calculated Linear Shrinkage × Tensile Modulus
Reduction in Stress (%) = 100 × (Estimated Stress - Measured Stress)/Estimated Stress