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 Indian J Med Microbiol  
 

Figure 3: Representative scanning electron microscopy appearance of apical foramen before instrumentation, after instrumentation of the apical foramen by each file, and after root filling (a) instrumentation 1 mm short of the major apical foramen; (b) instrumentation in the limit of the major apical foramen and; (c) instrumentation 1 mm beyond the major apical foramen

Figure 3: Representative scanning electron microscopy appearance of apical foramen before instrumentation, after instrumentation of the apical foramen by each file, and after root filling (a) instrumentation 1 mm short of the major apical foramen; (b) instrumentation in the limit of the major apical foramen and; (c) instrumentation 1 mm beyond the major apical foramen