Table 1: Intergroup comparison of the mean and standard deviation, the significance (p) value of the total color change (AE) between groups I and II and their subgroups at 24 hours, 7 days

Groups		At 24 hours		At 7 days		At 1 month
IA-IB		<0.01		<0.001		<0.001
IA-IIA		0.86 (NS)		0.99 (NS)		0.79 (NS)
IA-IIB		0.98 (NS)		1.00 (NS)		1.00 (NS)
IIA-IIB		0.99 (NS)		0.99 (NS)		0.80 (NS)
IB-IIC		0.97 (NS)		0.58 (NS)		0.99 (NS)
IB-IID		1.00 (NS)		0.99 (NS)		0.98 (NS)
IIC-IID		0.91 (NS)		0.79 (NS)		1.00 (NS)
IIA-IIC		<0.05		<0.001		<0.001

NS: Not significant