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Synchrotron-based X-ray tomographic microscopy for visualization of three-dimensional collagen matrices

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Abstract

Introduction

Three-dimensional collagen matrices (3D-CMs) may be visualized by cumbersome reconstructions of serial sections. We report here on the method of synchrotron-based X-ray tomographic microscopy (SRXTM) to image 3D-CMs in native tissue probes.

Material and methods

SRXTM of 3D-CMs (mucoderm®, mucograft®) was performed at the TOMCAT beamline of the Swiss Light Source (SLS) at the Paul Scherrer Institute (Villigen, Switzerland).

Results

SRXTM combines the advantages of high-resolution scanning electron microscopy (SEM) imaging with the low-resolution reconstructions of micro-CT (μCT) imaging. It may be used to non-destructively visualize and analyze structures within the 3D-CMs without the need of serial sectioning and reconstruction.

Conclusion

High-resolution SRXTM is a useful tool in analyzing the topology and morphometry of structures in 3D-CMs. The outcome justifies the efforts in sophisticated data processing.

Clinical relevance

SRXTM may help to understand the clinical characteristics of 3D-CMs in more detail.

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Acknowledgments

Synchrotron-based X-ray tomographic microscopy (SRXTM) experiments were facilitated by a research grant of the Swiss Light Source at the Paul Scherrer Institute (Villigen, Switzerland) to A.M. Pabst. The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 312284 for CALIPSO.

Conflict of interests

The authors declare no conflict of interests.

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Corresponding author

Correspondence to Moritz A. Konerding.

Electronic supplementary material

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Movie 1

Overview of a mucoderm® scan (white bar = 1,250 μm) (MPG 123,946 kb)

Movie 2

View on the surface layer of a mucoderm® scan in higher magnification (white bar = 400 μm) (MPG 244,052 kb)

Movie 3

Overview of a mucograft® scan (spongious layer; white bar = 1,200 μm) (MPG 114,236 kb)

Movie 4

Overview of the surface layer of a mucograft® scan (compact layer; white bar = 350 μm) (MPG 163,838 kb)

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Pabst, A.M., Wagner, W., Kasaj, A. et al. Synchrotron-based X-ray tomographic microscopy for visualization of three-dimensional collagen matrices. Clin Oral Invest 19, 561–564 (2015). https://doi.org/10.1007/s00784-014-1312-4

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  • DOI: https://doi.org/10.1007/s00784-014-1312-4

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