TY - RPRT TI - A mandibular first molar with a C-shaped root configuration. AU - W L Bolger AU - W G Schindler PY - 1988 DO - 10.1016/s0099-2399(88)80110-9 UR - https://pubmed.ncbi.nlm.nih.gov/3255779/ ID - 3255779 ER -