Fig. 1

A colleague was not satisfied with the color of the lower left central incisor: the tooth had been treated endodontically years earlier following a trauma and the previous root canal therapy, although it had never given relapses, shows an inadequate three-dimensional seal .

Fig. 2

After isolation with a rubber dam, we then proceed to orthograde retreatment thanks to the use of mechanical and reciprocating instrumentation. The apex, slightly reworked, was shaped with a 30/06 tool.

Fig. 3

The obturation technique used was the Warm Vertical Condensation, paying attention during the back filling to leave the necessary space for the protective material.

Fig. 4

One week after retreatment, approximately 2 mm of light-curing glass ionomer cement (Vitrebond - ESPE 3M) is applied and sodium perborate and distilled water are applied. The procedure was repeated twice until the desired clinical and aesthetic result was obtained, then the most superficial portion of glass ionomer was removed and the endodontic cavity was permanently sealed using the adhesive technique. The final photo represents the 60-day follow up.


The correct application of the protocols and the use of less aggressive whitening substances (sodium perborate), although the non-aesthetic perfect result cannot always be achieved, leads to more than satisfactory clinical results, exponentially reducing the burden of complications.


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