Explain Ledge bypass - Non-surgical Endodontic Retreatment  

Ledge bypass - StSt not NiT cause it has shape memory

• Ledges from outside the curvatures.
• The file tip is slowly scraped along the internal wall of the canal curve slightly coronal to the level of the ledge.
• Looking for another sticky spot that indicate the entrance to the apical canal segment.
• Gentle reciprocal rotation allow the file to negotiated to the canal terminus.
• Confirm with a radiograph.
• Short-amplitude push/pull and rotational forces.(not more than 1 mm )
• Anti-curvature filing to blend the ledge.