@article{article96610de7,
title   = {Periapical tissue response after use of intermediate restorative material, gutta-percha, reinforced zinc oxide cement, and mineral trioxide aggregate as retrograde root-end filling materials: a histologic study in dogs},
author = {Wälivaara, Dan-Ake and Abrahamsson, Peter and Isaksson, Sten and Salata, Luiz Antonio and Sennerby, Lars and Dablin, Christer},
year = {2012},
doi = {10.1016/j.joms.2012.01.033},
journal   = {Journal of Oral and Maxillofacial Surgery}
}