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Removal of Separated Instruments from the Root Canal System:

Article by Dr. Yosef Nahmias
One of the most difficult tasks to accomplish when performing Root Canal Treatment is the removal of a separated instrument from within the root canal space (see Figure 1 below). Traditionally, these cases are handled by trying to bypass the broken instrument. Extractors utilizing cyanoacrylic cements have been tried too. Unfortunately, these techniques are time consuming and usually not successful.
With the use of the microscope we have implemented a technique described by Gary Carr. The technique requires modifying a Gates Glidden bur (usually a Number. 4 or a Number. 5) by removing the bottom half and thus creating a flat cutting surface (see Figure 2 below).

Fig. 1 Separated Instrument in Apical 3rd
Figure 1

Figure 1:
An illustration shows a separated instrument in the apical 3rd.

Figure 2 Modified Gates Glidden bur
Figure 2

Figure 2:
Modified Gates Glidden bur, with the bottom half removed.

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	Figure 1	Figure 1: An illustration shows a separated instrument in the apical 3rd.
	Figure 2	Figure 2: Modified Gates Glidden bur, with the bottom half removed.


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