TY - RPRT TI - Case report: four permanent second molar extractions. AU - R J Isaacson AU - S J Lindauer AU - L K Rubenstein PY - 1993 DO - 10.1043/0003-3219(1993)063<0087:crfpsm>2.0.co;2 UR - https://pubmed.ncbi.nlm.nih.gov/8498706/ ID - 8498706 ER -