Three-dimensional imaging and analysis of annual layers in tree trunk and tooth cementum

Bert Müller; Muriel Stiefel; Griffin Rodgers; Mattia Humbel; Melissa Osterwalder; Jeannette A. von Jackowski; Gerhard Hotz; Adriana A. Velasco Guadarrama; Henry T. Bunn; Mario Scheel; Timm Weitkamp; Georg Schulz; Christine Tanner

doi:10.1117/12.2615148

20 April 2022 Three-dimensional imaging and analysis of annual layers in tree trunk and tooth cementum

Bert Müller, Muriel Stiefel, Griffin Rodgers, Mattia Humbel, Melissa Osterwalder, Jeannette A. von Jackowski, Gerhard Hotz, Adriana A. Velasco Guadarrama, Henry T. Bunn, Mario Scheel, Timm Weitkamp, Georg Schulz, Christine Tanner

Author Affiliations +

Proceedings Volume 12041, Bioinspiration, Biomimetics, and Bioreplication XII; 120410C (2022) https://doi.org/10.1117/12.2615148
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

Comparable to annual rings present in a tree trunk, human tooth cementum contains yearly deposited incremental layers often termed incremental lines, which are generally visualized from tooth slides with optical microscopy in two dimensions. These micrometer-thin incremental lines are used to decode age-at-death and stress periods over the lifetime of an individuum. One can also visualize these layers without physical slicing by means of hard X rays because of density modulations. Within this project, two optically almost transparent tooth slides were used to record optical data in two dimensions with submicron pixel sizes. These data were registered with projections of available synchrotron radiation-based tomography data of the slides. Such data were also acquired for an entire tooth to determine thickness variations in each layer, the intra-layer thickness, and variations between the layers, the inter-layer thickness, automatically.

Conference Presentation

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Bert Müller, Muriel Stiefel, Griffin Rodgers, Mattia Humbel, Melissa Osterwalder, Jeannette A. von Jackowski, Gerhard Hotz, Adriana A. Velasco Guadarrama, Henry T. Bunn, Mario Scheel, Timm Weitkamp, Georg Schulz, and Christine Tanner "Three-dimensional imaging and analysis of annual layers in tree trunk and tooth cementum", Proc. SPIE 12041, Bioinspiration, Biomimetics, and Bioreplication XII, 120410C (20 April 2022); https://doi.org/10.1117/12.2615148

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