TY - GEN AU - Membrillo,J L AU - Márquez,M A AU - Gutiérrez,M E TI - [The step-back technic with mechanical and combined instrumentation] SN - 0185-5905 PY - 1987///0106 KW - Humans KW - Incisor KW - Root Canal Irrigants KW - Root Canal Therapy KW - instrumentation N1 - Publication Type: Comparative Study; Journal Article ER -