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The document outlines the historical development and classification of endodontic instruments from 1746 to the 2000s, detailing significant inventions and manufacturers. It describes various types of instruments used in endodontics, including hand and engine-driven tools, as well as their intended functions and specifications. Additionally, it addresses advancements in techniques and materials, particularly concerning nickel-titanium alloys and innovative designs aimed at enhancing efficiency and safety in root canal treatments.






































































































































































































































