The Effect of Patency Files on Apical Canal Anatomy Using SEM Imaging

Figure 4

Two SEM images of the apical canal anatomy. SEM image (a) reveals a smear layer created by the #45 .06 taper rotary file at 250x magnification. SEM image (b) reveals the dentinal tubules sealed by the smear layer at 1300x magnification.

(a)

(b)