A Comparison of Er:YAG Laser with Photon-Initiated Photoacoustic Streaming, Nd:YAG Laser, and Conventional Irrigation on the Eradication of Root Dentinal Tubule Infection by Enterococcus faecalis Biofilms: A Scanning Electron Microscopy Study

Figure 2

Scanning electron microscope analysis of the root canal surface after irrigation protocols at the apical levels of the root. Activation by PIPS laser at the apical level with (a) saline (Group 1) and (b) 1% NaOCl (Group 2). Activation by PIPS laser at the coronal level with (c) saline (Group 3) and (d) 1% NaOCl (Group 4). Irradiation by Nd:YAG laser after conventional irrigation (CI) with (e) saline (Group 5) and (f) 1% NaOCl (Group 6). The CI protocol with (g) 1% NaOCl (Group 7) and (h) 6% NaOCl (Group 8, the negative control). (i) The CI protocol with saline (Group 9, the positive control).

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