Comparing the Dimensional Accuracy of Casts Obtained from Two Types of Silicone Impression Materials in Different Impression Techniques and Frequent Times of Cast Preparation
Table 2
The mean dimensional accuracy measured based on different impression methods (one-stage or two-stage) and different times of impression preparation (1 h, 24 h, and 14 days after impression).
Dimensional accuracy measurement time
Impression method
Small die diameter (SD ± mean)
Die height (SD ± mean)
Distance between the inner vertices of the dies (SD ± mean)
Dimensional accuracy measured after one hour
S1
0.14 ± 13.76
0.12 ± 14.04
0.32 ± 46.99
S2
0.12 ± 13.41
0.33 14.09±
0.29 47.26±
P1
0.09 ± 13.82
0.07 ± 13.95
0.15 ± 46.93
P2
0.17 ± 13.27
0.18 ± 14.11
0.19 ± 47.43
Dimensional accuracy measured after a day
S1
0.12 ± 13.87
0.21 ± 14.13
0.09 ± 46.87
S2
0.15 ± 13.43
0.13 ± 14.00
0.35 ± 47.300
P1
0.10 ± 13.83
0.06 ± 14.02
0.07 ± 47.02
P2
0.21 ± 13.19
0.53 ± 13.68
0.20 ± 47.57
Dimensional accuracy measured after two weeks
S1
0.17 ± 13.85
0.19 ± 13.96
0.43 ± 46.93
S2
0.23 ± 13.50
0.23 ± 13.97
0.27 ± 47.10
P1
0.07 ± 13.77
0.12 ± 13.94
0.10 ± 47.01
P2
0.20 ± 13.16
0.17 ± 13.97
0.21 ± 47.59
Small die diameter size on the model: 13.72 mm; die height size on the model: 14.00 mm; distance between the inner vertices of the dies size on the model: 47.00 mm. SD, standard deviation; S1, Speedex one-stage technique; P1, Panasil one-stage technique; S2, Speedex two-stage technique; P2, Panasil two-stage technique.
