Instruments in conservative dentistry and endodontics are essential for diagnosis cavity preparation restoration and root canal treatment. Diagnostic tools include the mirror probe and explorer. Operative instruments like chisels hatchets and burs are used for tooth preparation. Restorative instruments such as condensers and carvers help place and shape filling materials. Endodontic instruments include files (K-files H-files) broaches irrigating syringes paper points and obturation tools like pluggers and spreaders. Modern aids like rotary files apex locators and magnification devices improve accuracy and efficiency in clinical procedures.