[Table/Fig-9]:

Ranking of subgroups.

RANK	SUBGROUPS	MEAN (Change in mean average surface roughness) (μm)	SD
1	Subgroup II (A)- GIC + COCA-COLA	4.41	0.53
2	Subgroup II (C)- GIC + NIMBOOZ	3.58	0.58
3	Subgroup IV (A)- COMPOMER + COCA-COLA	3.18	0.41
4	Subgroup III (A)- COMPOSITE + COCA-COLA	2.22	0.43
5	Subgroup IV (C)- COMPOMER + NIMBOOZ	2.20	0.26
6	Subgroup III (C)- COMPOSITE + NIMBOOZ	1.48	0.41
7	Subgroup II (B)- GIC + FROOTI	1.10	0.27
8	Subgroup II (D)- GIC + YAKULT	0.77	0.30
9	Subgroup I (A)- TOOTH –ENAMEL + COCA-COLA	0.71	0.22
10	Subgroup I (C)- TOOTH –ENAMEL + NIMBOOZ	0.47	0.23
11	Subgroup IV (B)- COMPOMER + FROOTI	0.39	0.04
12	Subgroup IV (D)- COMPOMER + YAKULT	0.31	0.06
13	Subgroup III (B)-COMPOSITE + FROOTI	0.19	0.08
14	Subgroup I (B)- TOOTH – ENAMEL + FROOTI	0.18	0.08
15	Subgroup III (D)- COMPOSITE + YAKULT	0.10	0.02
16	Subgroup I (D)- TOOTH – ENAMEL + YAKULT	0.07	0.05