New Protaper Gold system by Maillefer, even more flexible and with better access to the tooth. Progressive taper. Made of nickel-titanium, they represent the latest generation in rotary mechanical instrumentation in endodontics for rapid and efficient preparation of root canals while respecting their anatomy. Advantages: The multiple taper improves flexibility, cutting efficiency, and reduces stress - Long and curved canals are shaped using only 3 to 4 instruments - Reduced working time: fewer instruments - Cutting efficiency - Safe and simple.