Table 1.

Dimensional change (%) of addition silicone, condensation silicone, and polyether impression from the master die dimension (25.007 mm)

Time	Addition silicone	Condensation silicone	Polyether impression
30 min	0.276 ± 0.124	0.437 ± 0.227	–0.242 ± 0.182
1 h	0.315 ± 0.124	0.522 ± 0.283	–0.226 ± 0.181
1 ½ h	0.366 ± 0.140	0.624 ± 0.349	–0.209 ± 0.185
2 h	0.407 ± 0.146	0.778 ± 0.290	–0.193 ± 0.185
3 h	0.512 ± 0.161	0.850 ± 0.266	–0.154 ± 0.183
4 h	0.432 ± 0.167	0.907 ± 0.251	–0.111 ± 0.182
12 h	0.367 ± 0.191	1.047 ± 0.287	–0.030 ± 0.142
24 h	0.253 ± 0.235	1.078 ± 0.284	–0.050 ± 0.163
7 days	–0.062 ± 0.301	1.097 ± 0.268	–0.034 ± 0.161
15 days	–0.109 ± 0.319	1.230 ± 0.282	0.149 ± 0.172