TY - RPRT TI - Ultrasonic compared with hand instrumentation: a scanning electron microscope study. AU - M C Baker AU - S H Ashrafi AU - J E Van Cura AU - N A Remeikis PY - 1988 DO - 10.1016/s0099-2399(88)80131-6 UR - https://pubmed.ncbi.nlm.nih.gov/3273311/ ID - 3273311 ER -