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. 2018 Aug 17;10(4):271–278. doi: 10.4047/jap.2018.10.4.271

Table 4. Gloss before and after brushing simulation.

Groups	Food simulating liquids (n = 12)	Mean ± SD
Groups	Food simulating liquids (n = 12)	Before Brushing	After Brushing	P value
VMII (n = 48)	Air	84 ± 11^a	82 ± 5^a	.396
	Distiled water	81 ± 10^a	73 ± 7^a	.062
	0.02 M Citric acid	75 ± 8^a	69 ± 5^a	.124
	75% Ethanol	77 ± 5^a	68 ± 3^a	.053
VE (n = 48)	Air	64 ± 3^a,b	51 ± 10^c	< .05
	Distiled water	60 ± 6^b	47 ± 4^c	< .05
	0.02 M Citric acid	55 ± 9^b	45 ± 6^c	< .05
	75% Ethanol	61 ± 4^b	43 ± 7^c	< .05
LU (n = 48)	Air	69 ± 7^a	59 ± 8^b	< .05
	Distiled water	72 ± 8^a	64 ± 7^a,b	.052
	0.02 M Citric acid	67 ± 5^a	55 ± 4^b	< .05
	75% Ethanol	64 ± 6^a,b	56 ± 5^b	.056
PMZ (n = 48)	Air	57 ± 4^b	49 ± 6^c	< .05
	Distiled water	62 ± 13^b	40 ± 5^c	< .001
	0.02 M Citric acid	53 ± 5^b,c	45 ± 2^c	.063
	75% Ethanol	47 ± 3^c	36 ± 5d	< .05

Different superscripted letters indicate statistically significant differences of materials (P < .05).