ROEN0310

Fig.8_Diagnosticradiograph, showingtheseparatedinstrumentat approx.5mmfromtheapex. Fig.9_Theseparatedinstrument. Fig.10_Theseparatedfileafter retrieval. Fig.11_Workinglengthdetermination. Fig.12_Deepapicalsplit. Fig.13_Gutta-perchaconefitting. I 35 case report _ instrument removal I roots3_2010 scrapedwithMicro-Debriders(DENTSPLYMaillefer) in order to remove the last remnants of gutta-per- cha. All canals were shaped to a size 40.06 ProFile. Final apical shaping was performed with K-Flexo- files (DENTSPLY Maillefer). Smear-layer removal was carried out by irrigating the canal with 10% citric acid. A final wash of the canal was performed withsterilesaline.Taperedgutta-perchaconeswere then fitted (Fig. 4) and tug-back was confirmed. Topseal (DENTSPLY Maillefer) was used as a root- canal sealer. Obturation was performed according to the continuous wave of condensation technique with the Elements Obturation Unit (SybronEndo). After obturation(Fig.5),atemporaryrestorationofglass- ionomer cement was placed (Fuji IX GP Fast). Final radiographs (Figs. 6 & 7) were taken, both parallel and angled. The radiographs show two completely separatedmesialcanals;hence,instrumentremoval in both canals was favourable. The prognosis of this case was good and the patient was referred to her general dentist for a definitive coronal restoration. _Case II A 19-year-old male patient was referred to our practice. He was in good health and had an ASA score of 1. The referring dentist had fractured a small instrument—most likely a size 10 or 15 K-file, Fig. 13Fig. 12 Fig. 8 Fig. 9 Fig. 10 Fig. 11

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