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  Indian J Med Microbiol
 

Figure 4: The measurement of the difference (in mm) between the tip of the #15 Kfile and the tip of the master apical file (X2 or primary file) which they inserted up to the continuous working length. The measurement was performed on two superimposed pre- and postinstrumentation X-rays

Figure 4: The measurement of the difference (in mm) between the tip of the #15 Kfile and the tip of the master apical file (X2 or primary file) which they inserted up to the continuous working length. The measurement was performed on two superimposed pre- and postinstrumentation X-rays