Research Article

Effects of Prepolymerized Particle Size and Polymerization Kinetics on Volumetric Shrinkage of Dental Modeling Resins

Table 2

Shrinkage data determined using a linometer.

MaterialVolumetric shrinkage (%)Shrinkage in 10 seconds (%)Overall time constant (s)

JT6.15 ± 0.64 A0.53 ± 0.09 A316.82 ± 23.36 A
PK7.83 ± 1.57 AB0.77 ± 0.18 A120.56 ± 19.39 B
DL6.22 ± 1.24 A0.52 ± 0.10 A283.01 ± 28.91 C
FR7.11 ± 0.86 AB0.74 ± 0.12 A136.79 ± 19.41 B
GP8.70 ± 1.78 B1.57 ± 0.27 B78.43 ± 14.03 D
GL8.09 ± 1.91 B1.59 ± 0.29 B85.27 ± 6.85 D

Values are expressed as mean ± standard deviation. Within a row, values followed by different uppercase letters are statistically different ( ).