With the arrival of NiTi engine-driven files and mechanized instrumentation systems, root canal instrumentation became exponentially faster and somehow more predictable compared to manual instrumentation techniques. However, with the popularization of these files in recent decades, a breach between speedy preparation and infection control becomes evident, especially regarding the time and volume of irrigating fluid during the operation. Nevertheless, it is undeniable that the technical advance arising from NiTi engine-driven files has benefited the endodontic technique. The question is what is more important, speed or infection control? Naturally, the answer lies in infection control efficiency, without which the repair process will be impossible.
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