Effect of Nanoclay Dispersion on the Properties of a Commercial Glass Ionomer Cement

Table 2

Mechanical properties (CS, DTS, FS, and ) results of experimental (nanoclay-reinforced GIC) and control group (Fuji-IX) GICs at different storage time. Mean values (standard deviation) of working time and setting time of cements are also presented.

Cement groups	F-IX	C-V	C-N
CS (MPa)
1 hour	99 (10)^a	94 (8)^a	100 (14)^a
1 day	120 (19)^a	137 (16)^b	107 (16)^c
1 month	124 (19)^a	122 (17)^a	130 (26)^a
DTS (MPa)
1 hour	12 (2)^a	10 (2)^a	10 (4)^a
1 day	15 (3)^a	14 (3)^a	13 (3)^a
1 month	16 (3)^a	17 (3)^a	19 (4)^a
FS (MPa)
1 hour	25 (3)^a,c	20 (4)^b	30 (3)^c
1 day	30 (5)^a	28 (5)^a	29 (5)^a
1 month	20 (3)^a	24 (3)^a,b	28 (3)^b
(GPa)
1 month	11 (2)^a	13 (2)^a	12 (3)^a
Woking time (mins)	4.16 (0.15)^a	4.15 (0.25)^a	4.50 (0.20)^b
Setting time (mins)	6.35 (0.10)^a	6.55 (0.15)^b	6.50 (0.25)^b

Parentheses are standard deviations; different superscript (row) indicates statistically significant different ().