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. Author manuscript; available in PMC: 2008 Mar 13.

Published in final edited form as: J Prosthodont. 2007 Aug 2;16(6):465–472. doi: 10.1111/j.1532-849X.2007.00219.x

Table 2.

Mean (Standard Deviation) ΔE* Color Differences for the Three Groups

	ΔE*_homogeneous	ΔE*_UVExposure	ΔE*_ADA
L199	0.82 ^A (0.51)	0.94 ^A (0.41)	0.97 ^A (0.34)
E-10	1.48 ^A (0.82)	1.18 ^AB (0.72)	1.56 ^AB (0.68)
E-20	1.09 ^A (0.71)	1.88 ^B (0.84)	2.51 ^B (1.10)

For each ΔE*, different superscript letters (within column) indicate the mean is statistically different (p < 0.05).