Effects of immediate versus delayed post space preparation on coronal microleakage using different filling materials
Lan Yu-yan, Pu Lin, Huang Hai-xia, Fan Li-yuan, Liu Min, Sun Li-bo
Chinese Journal of Tissue Engineering Research . 2016, (25): 3757 -3763 .  DOI: 10.3969/j.issn.2095-4344.2016.25.017