Fig. 9

SHG imaging in the peri-implant area. a Optical microscope image of CTL.IP. b SHG imaging of CTL.IP. c Optical microscope image of the TS.IP. d SHG imaging of the TS.IP. a–d 100× magnification. Bar: 100 μm. e Box-and-whisker plot of the angle of the collagen fiber bundle with respect to the Y-axis