TY - GEN AU - Whipple,Sterling J AU - Kirkpatrick,Timothy C AU - Rutledge,Richard E TI - Cyclic fatigue resistance of two variable-taper rotary file systems: ProTaper universal and V-Taper SN - 1878-3554 PY - 2009///0707 KW - Dental Alloys KW - Dental Instruments KW - Dental Stress Analysis KW - Equipment Failure KW - Nickel KW - Root Canal Preparation KW - instrumentation KW - Titanium N1 - Publication Type: Comparative Study; Journal Article UR - https://doi.org/10.1016/j.joen.2009.01.002 ER -