Fig. 4
From: A novel simplified approach for endodontic retrograde surgery in short single-rooted teeth
Representative SEM images of longitudinal sections. (A) Low-magnification images of the conventional surgery group. (D) Low-magnification images of the standard surgery group. (G) Low-magnification images of the modified surgery group. (B), (E), (H) High-magnification images of the black-framed areas in (A), (D), and (G), respectively. (C), (F), (I) High-magnification images of black-framed areas in (A), (D), and (G), respectively. DE, dentin; GP, gutta-percha; SP, iRoot SP; BP, iRoot BP.