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  Indian J Med Microbiol
 

Figure 1: (a) Preoperative photograph of 22. (b) Sinus tracing. (c) Access opening showing mesiolabial, distolabial, P orifices. (d) Files in mesiolabial and distolabial canals communicating. (e) Invaginatus obturation. (f) Bony defect distolateral to 22. (g) Schematic representation of obtura material flowing in the main canal indicated by orange colored arrows and red color showing apical stop with plastic filling instrument. (h) Immediate posttreatment radiograph

Figure 1: (a) Preoperative photograph of 22. (b) Sinus tracing. (c) Access opening showing mesiolabial, distolabial, <i>P</i> orifices. (d) Files in mesiolabial and distolabial canals communicating. (e) Invaginatus obturation. (f) Bony defect distolateral to 22. (g) Schematic representation of obtura material flowing in the main canal indicated by orange colored arrows and red color showing apical stop with plastic filling instrument. (h) Immediate posttreatment radiograph