@article{article1175bff9, title = {The effect of larger apical preparations in the danger zone of lower molars prepared using the Mtwo and Reciproc systems}, author = {Sant’Anna Júnior, Arnaldo and Cavenago, Bruno Cavalini and Ordinola-Zapata, Ronald and Deus, Gustavo De and Bramante, Clóvis Monteiro and Duarte, Marco Antonio Hungaro}, year = {2014}, doi = {10.1016/j.joen.2014.06.020}, journal = {Journal of Endodontics} }