Burial Practices in Ireland During the Late Third Millennium Bc Connecting New Ideologies With Local Expressions

Cleary, Kerri

doi:10.2307/j.ctvh1dhg7.8

Cited by 2 publications

(1 citation statement)

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“…The burial has been directly dated to 2450-2030 cal BC (UBA-29672 3780 AE 53). 32 The calculus was not removed from the tooth before scanning; instead, the whole tooth was mounted on the sample holder. It is not possible to determine the length of time over which this calculus deposit was formed but given the absence of modern dental hygiene practices in prehistory, it is likely that this deposit represents years to decades of the individual's life.…”

Section: Methodsmentioning

confidence: 99%

Synchrotron radiation-based phase-contrast microtomography of human dental calculus allows nondestructive analysis of inclusions: implications for archeological samples

Power¹,

Henry

Beckmann

et al. 2022

J. Med. Imag.

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Purpose: Dental calculus forms on teeth during the life of an individual and its investigation can yield information about diet, health status, and environmental pollution. Currently, the analytical techniques used to visualize the internal structure of human dental calculus and entrapped inclusions are limited and require destructive sampling, which cannot always be justified. Approach:We used propagation phase-contrast synchrotron radiation micro-computed tomography (PPC-SR-μCT) to non-destructively examine the internal organization of dental calculus, including its microstructure and entrapped inclusions, on both modern and archeological samples. Results:The virtual histological exploration of the samples shows that PPC-SR-μCT is a powerful approach to visualize the internal organization of dental calculus. We identified several important features, including previously undetected negative imprints of enamel and dentine growth markers (perikymata and periradicular bands, respectively), the non-contiguous structure of calculus layers with multiple voids, and entrapped plant remains.Conclusions: PPC-SR-μCT is an effective technique to explore dental calculus structural organization, and is especially powerful for enabling the identification of inclusions. The non-destructive nature of synchrotron tomography helps protect samples for future research. However, the irregular layers and frequent voids reveal a high heterogeneity and variability within calculus, with implications for research focusing on inclusions.

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Section: Methodsmentioning

confidence: 99%