Not all electronic foramen locators are accurate in teeth with enlarged apical foramina: an in vitro comparison of 5 brands - Akisue, Eduardo; Gratieri, Simone Domingues; Barletta, Fernando Branco; Caldeira, Celso Luiz; Grazziotin-Soares, Renata; Gavini, Giulio (Journal of Endodontics, 2014)