The instrument is made of nickel-titanium alloy. All files are constant tapered.
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The XR can be used in a clockwise reciprocating motor but not in the WaveOne reciprocating motor which moves in the counter-clockwise direction. The X1 is designed specifically for use in only the WaveOne reciprocating motor and setting.
These files are used in Endodontics for retreating endodontically treated teeth by the removal of root canal filling, dentin, and root canal shaping. They can be used in the same hand piece as other NiTi rotary instruments.
Speed and Torque. Use the same hand piece with the same speed and torque settings you are currently using with your rotary system. Or if you wish, you can use for all EdgeFile®XR rotary files the following speed and torque settings for all files. Speed Torque 300-500 rpm 300 g-cm.
For retreatments - when you need to remove the gutta percha.