Table 3. Paired comparison of microleakage in different experimental groups using Mann-Whitney U test.

GROUPS	P-value
ZIRCONOMER vs KETACTM SILVER	0.026**
ZIRCONOMER vs FILTEKTM Z500	0.836***
ZIRCONOMER vs DISPERSALLOY®	0.001*
KETACTM SILVER vs FILTEKTM Z500	0.080***
KETACTM SILVER vs DISPERSALLOY®	0.001*
FILTEKTM Z500 vs DISPERSALLOY®	0.002*

P-value* is highly significant; P-value** is significant; P-value*** is insignificant