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Effects of maternal, gestational, and perinatal variables on neonatal line width observed in a modern UK birth cohort

Hassett, BR; Dean, MC; Ring, S; Atkinson, C; Ness, AR; Humphrey, L; (2020) Effects of maternal, gestational, and perinatal variables on neonatal line width observed in a modern UK birth cohort. American Journal of Physical Anthropology , 172 (2) pp. 314-332. 10.1002/ajpa.24042. Green open access

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Abstract

OBJECTIVES: The objective of this study was to explore potential relationships between neonatal line (NNL) width and early life history variables such as maternal health, gestation, the birth process, and perinatal health. MATERIALS AND METHODS: Histological thin sections of deciduous canines were studied from 71 children from the Avon Longitudinal Study of Parents and Children (ALSPAC). The width of the NNL was measured in three locations on the tooth crown using spatial mapping techniques (ArcGIS) from digital images from an Olympus VS-120 microscope. Life history variables were collected prospectively through a combination of clinical observations and questionnaires. RESULTS: Infants born late term or post term had narrower neonatal lines than those born prematurely or at full term. Infants born in Autumn (September to November) had narrower NNLs than those born at other times of year. NNLs in infants born to mothers with hypertension were wider than those without. Infants resuscitated at birth or born to obese mothers had narrower NNLs than those that were not. There was no association between NNL width and either the type or duration of delivery. DISCUSSION: The NNL in enamel is an irregular accentuated line, but the factors underlying its formation and width remain unclear. In contrast to some previous studies, we found no association between wider NNLs and long or difficult births. Instead, we found that the width of the neonatal line NNL varied in relation to parameters that reflected the prenatal environment and length of gestation.

Type: Article
Title: Effects of maternal, gestational, and perinatal variables on neonatal line width observed in a modern UK birth cohort
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/ajpa.24042
Publisher version: https://www.doi.org/10.1002/ajpa.24042
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: ALSPAC, deciduous teeth, enamel, incremental markings
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Institute of Archaeology
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Institute of Archaeology > Institute of Archaeology Gordon Square
URI: https://discovery.ucl.ac.uk/id/eprint/10094070
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