Fig. 1

A 47 years old patient was referred to our office by his general dental practitioner for endodontic retreatment. He complained about biting tenderness associated with tooth 46.

The access cavity was driven by the removal of the occlusal temporary filling and the infected dentine.

The MG3 file system from Perfect was chosen for managing this case.

Fig. 2

12A metal clamp was used to secure the rubber dam

Liquid dam was needed to obtain isolation

Instrumentation sequence:

  • MG3 ST
  • MG3 G1
  • MG3 G2
Fig. 3

ST file was used to widen the orifice

Fig. 4

G1 and G2 are the shapers used to remove the dentine

Fig. 5

Aspect of the mesial canals orifices after RCT

Fig. 6

Aspect of the distal canals orifices after RCT

Fig. 7

Vertical warm condensation technique was performed to obturate the canals

Fig. 8

A fiber post was placed inside the DL canal

Fig. 9

Core build up

Fig. 10

Post operative x-ray.


The MG3 system can be an excellent choice for the management of retreatment cases.


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Farzaneh, M., Abitbol, S. & Friedman, S. 2004, Treatment Outcome in Endodontics: The Toronto Study. Phases I and II: Orthograde Retreatment;

Gorni FG, Gagliani MM. The outcome of endodontic retreatment: a 2-yr follow-up. J Endod. 2004 Jan;30(1):1-4;

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