Micro-Trephine Bur Tip creating a small space adjacent

creating a small space adjacent to the fractured file edge

and Katana-H when they become chipped or dull

The TFRK-ME has extremely fine spear-shaped tips with a smooth surface for bypassing ledged canals and exploring the canal for broken files or other impediments (Seen as instrument on right)

ED89(TFRK-Katana H) tips usually cut only a quarter slot of the circle

The ultrasonic preparation continues until the movement of the broken instrument is confirmed under the 4 magnification

Micro-Trephine Bur Tip creating a small space adjacentTiny cylinder with cutting blades on its tip to create a trough 1 mm deep around the coronal portion of the separated file. The Micro trephine bur is used at 600 rpm in a counter clockwise direction to encourage separated files to unthread from the canal as the trough is cut.