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  Indian J Med Microbiol
 

Figure 1: Endodontic retreatment (a) Preoperative radiograph showing gutta percha in the root canals and instrument separation (b) postobturation radiograph (c) extracted tooth showing instrument protruding through its mesial root apex (d) extraction socket (e) root-end resection (f) retro preparation (g) retro filling (h) platelet-rich fibrin

Figure 1: Endodontic retreatment (a) Preoperative radiograph showing gutta percha in the root canals and instrument separation (b) postobturation radiograph (c) extracted tooth showing instrument protruding through its mesial root apex (d) extraction socket (e) root-end resection (f) retro preparation (g) retro filling (h) platelet-rich fibrin