English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Movement analysis of primate molar teeth under load using synchrotron X-ray microtomography

MPS-Authors
/persons/resource/persons192497

Bemmann,  Maximilian
Max Planck Weizmann Center for integrative Archaeology and Anthropology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;

/persons/resource/persons133952

Schulz-Kornas,  Ellen       
Max Planck Weizmann Center for integrative Archaeology and Anthropology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;
Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;

/persons/resource/persons72807

Kupczik,  Kornelius       
Max Planck Weizmann Center for integrative Archaeology and Anthropology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;
Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Bemmann, M., Schulz-Kornas, E., Hammel, J. U., Hipp, A., Moosmann, J., Herrel, A., et al. (2021). Movement analysis of primate molar teeth under load using synchrotron X-ray microtomography. Journal of Structural Biology, 213(1): 107658. doi:10.1016/j.jsb.2020.107658.


Cite as: https://hdl.handle.net/21.11116/0000-0007-B1D9-C
Abstract
Mammalian teeth have to sustain repetitive and high chewing loads without failure. Key to this capability is the periodontal ligament (PDL), a connective tissue containing a collagenous fibre network which connects the tooth roots to the alveolar bone socket and which allows the teeth to move when loaded. It has been suggested that rodent molars under load experience a screw-like downward motion but it remains unclear whether this movement also occurs in primates. Here we use synchroton micro-computed tomography paired with an axial loading setup to investigate the form-function relationship between tooth movement and the morphology of the PDL space in a non-human primate, the mouse lemur (Microcebus murinus). The loading behavior of both mandibular and maxillary molars showed a three-dimensional movement with translational and rotational components, which pushes the tooth into the alveolar socket. Moreover, we found a non-uniform PDL thickness distribution and a gradual increase in volumetric proportion of the periodontal vasculature from cervical to apical. Our results suggest that the PDL morphology may optimize the three-dimensional tooth movement to avoid high stresses under loading.