Dentsply Tulsa Dental
Toll Free (800) 662-1202
Phone (918) 493-6598
Fax (918) 493-6599

Ultrasonics remains the procedural choice when removing intracanal obstructions lodged deep within the root canal system. On occasion, ultrasonic trephining procedures are limited or prove ineffective. In these instances, the File Removal System (FRS) may be utilized to mechanically engage and potentially remove intracanal obstructions, such as silver points, carrier-based obturators or broken file segments. The instrument with the black handle is designed to work in the coronal one-third of larger canals, whereas the red and yellow (product pending) instruments can be placed progressively deeper into smaller, more narrow canals. Each complete instrument is comprised of a color coordinated microtube and screw wedge.

BLACK.......Outside Diameter = 1.00 mm, Inside Diameter = 0.80 mm
RED...........Outside Diameter = 0.80 mm, Inside Diameter = 0.60 mm
YELLOW....Outside Diameter = 0.60 mm, Inside Diameter = 0.40 mm
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Product Features
• Small handles to enhance vision
• Side window to improve mechanics
• 45° bevel to ‘scoop’ obstructions

Screw Wedge
• Knurled handled wedge for sure grip
• Threading mechanism for strong purchase
• Fluted distal end for sure grip

Technique Summary
The microtube’s distal end contains a bevel and side window. The beveled end "scoops-up" the broken instrument into its lumen, and its side window potentially receives the head of the obstruction. The screw wedge is passed through the proximal end of the microtube and, upon contacting the broken instrument, is turned CCW to mechanically engage the obstruction. When engaged, the obstruction is removed by rotating the microtube and screw wedge assembly out of the canal. Note the black and red screw wedges may be interchanged between each microtube which, at times, improves mechanics.