. Author manuscript; available in PMC: 2012 Sep 1.

Published in final edited form as: Dent Mater. 2011 Jun 29;27(9):899–905. doi: 10.1016/j.dental.2011.05.006

Table 1.

Mean polymerization stress (n=3 or greater, unit: MPa) induced at different effective beam length

Sample Position (effective beam length) cm	Sample Height (cm)
	1.0		1.5		2.0

	PS	SD	PS	SD	PS	SD
5	0.7388	0.0175	0.7504	0.0561	0.8280	0.0995
7	0.2986	0.0121	0.3878	0.0521	0.3762	0.0262
10	0.1222	5.8173e-3	0.1435	3.3586e-3	0.1435	3.3586e-3
12.5	0.0601	6.7173e-3	0.0756	5.8173e-3	0.0814	0.0000
15	0.0407	0.0000	0.0485	3.3586e-3	0.0504	3.3586e-3
18	0.0233	0.0000	0.0291	0.0000	0.0310	3.3586e-3