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ePaper created 2018-05-16, 11:45:19 | version 1.38.0
Fig. 10 The image reflects the distal views of 3-D recon- structions of the mesial root canal systems of four mandibular molars prior to (green) and after (red) canal preparation with reciprocating instruments. Final irrigation was done with conventional irri- gation, passive ultrasonic irrigation, the SAF and the XP-endo Finisher. The figures demonstrate the effectiveness of the Finisher in the apical region. Fig. 11 The pre-op periapical radio- graph shows a mesiodistal resorptive defect. The cone beam computed tomogra- phy images show that this was internal resorption and that it extended bucco- lingually as well. The post-op radiograph shows that, at the second visit, the canal was filled com- pletely, which is an indication that the tissue and debris had been removed. Also, and just as importantly, the original shape of the canal was main- tained so that the tooth was not further weakened by the cleaning procedure. Fig. 12 Microcomputed tomogra- phy (μ-CT) images of representative specimens subjected to retreatment procedures. Only the apical segment of roots was reconstructed. (A) The initial μ-CT scan taken after root canal filling. (B) A post- preparation μ-CT scan taken after retreatment proce- dures with both systems: left canals with RECIPROC and right canals with Mtwo. (C) The final μ-CT scan after using the XP-endo Finisher.16 Fig. 10 Fig. 11 Fig. 12 40 — issue 2018 Endodontics Article