An incomplete fill with voids was retreated and the result: the elimination of bacteria naturally
Root treatments fail for many reasons, but the underlying reason is microleakage and a source for bacterial growth.
An incomplete fill with voids will host a plethora of bacteria; however with good cleaning, shaping and packing that will provide a 3 dimensional seal and thus eliminate space for bacteria growth, will result in an excellent prognosis.
BEFORE TREATMENT WITH VOIDS
ROOT CANAL RETREATMENT WITH COMPLETE FILL