Analysis of mandibular second molars with fused roots and shallow radicular grooves by using micro-computed tomography - Amoroso-Silva, Pablo Andrés; Moraes, Ivaldo Gomes de; Marceliano-Alves, Marilia Fagury Videira; Bramante, Clovis Monteiro; Ordinola-Zapata, Ronald; Duarte, Marco Antonio Hungaro (Journal of Conservative Dentistry, 2018)