Effect of two artificial aging protocols on color and gloss of single-shade versus multi-shade resin composites

BMC Oral Health

Table 6 Mean and standard deviation of gloss of both materials with each storage medium before and after immersion

Intervention	Omnichroma				P value	Filtek Z350 XT				P value
Intervention	Before immersion		After immersion			Before immersion		After immersion
Storage medium	Mean	SD	Mean	SD		Mean	SD	Mean	SD
Saliva	31.96^a	2.26	32.36^a	2.26	P < 0.0001*	37.64^a	1.4	38.29^a	1.39	P < 0.0001*
Tea	31.21^a	2.76	28.23^b	2.82	P < 0.0001*	37.61^a	3.29	33.82^b	3.1	P < 0.0001*
Red wine	31.74^a	1.66	28.25^b	1.68	P < 0.0001*	36.5^a	2.72	32.23^b	2.7	P = 0.0035*
P value	P = 0.752		P < 0.001*			P = 0.541		P < 0.001*

Means with different letters in the same column indicate statistically significance difference while means in the same row has no letters as they are two groups only. *Corresponds to statistically significant difference

ISSN: 1472-6831