Surface Analysis and Spectrophotometric Evaluation of Different Esthetic Restorative Materials Frequently Exposed to a Desensitizing Agent

Table 2

Student’s t-test, ANOVA, and post hoc tests of the surface roughness results.

Group	Control		Tested		value	value
	Mean	SD	Mean	SD
RMGIC	0.126^b	0.012	0.379^b	0.095	5.93	0.0004
Amalgomer	0.085^bc	0.010	0.199^c	0.025	9.65	0.0001
Nanohybrid	0.643^a	0.079	0.780^a	0.064	3.02	0.0166
Bulk-fill	0.045^c	0.004	0.044^b	0.011	0.19	0.8571
LSD value	0.0543		2.8694		—	—
value	0.0001		0.0001		—	—

LSD; least significant difference. a–d; means with the same letter in each column are not significantly different at  ≤ 0.05.