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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: Bone. 2013 Sep 21;57(2):455–467. doi: 10.1016/j.bone.2013.09.007

Figure 5. A higher resolution map of heterogeneous X-ray attenuations within alveolar bone.

Figure 5

A composite made out of micrographs taken using a high resolution Nano-TXM illustrated varying X-ray attenuations within bundle bone (BB). Bone adjacent to the PDL-space was identified as BB by the presence of less attenuating organic Sharpey’s fibers inserts (white arrows). Interestingly, the LB-BB interface is highlighted as highly X-ray attenuating suggesting higher mineral content. Overlay is an AFM micrograph with radial PDL fibers in BB and an orientation change to circumferential in LB within a junction of 10-30 μm. It is possible that the density of fibers could have contributed to the higher X-ray attenuation (dashed white line). Highly attenuated (radiopaque) regions (star) in lamellar bone (circle). Lamellar bone: LB, Bundle bone: BB, Periodontal ligament: PDL