Fig. 4From: Effects of surface sub-micrometer topography following oxalic acid treatment on bone quantity and quality around dental implants in rabbit tibiaea Ratios of mature and immature bone to total bone at 4 and 8 weeks after implant placement (Cont: control). b Representative picrosirius red-stained images with a polarized light microscope (bar, 250 μm). c, d Same type I and III collagens between control and test implants 4 weeks post-implantation, whereas increased type I and decreased type III collagens at 8 weeks after implant placement when compared with control. *p < 0.05, n = 7/each groupBack to article page