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We evaluate whether enamel and dentin incremental structures, particularly the Neonatal Line (NNL), can be used to provide a reliable estimate of chronological age.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Samples and Methods<\/jats:title>\n                    <jats:p>Seventeen unerupted deciduous teeth from 14 full\u2010term infants (0\u2013164\u2009days old) were analyzed from the Granada identified skeletal collection in Spain. Thin sections were examined under transmitted light and confocal microscopy to identify the NNL, cross\u2010striations, and von Ebner's lines. Daily secretion rates (DSR) were measured across crown and root to calculate crown formation time (CFT) and root formation time (RFT), which were compared with the documented ages at death.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Mean enamel DSR was 3.38\u2009\u03bcm\/day, and mean root dentin DSR was 3.24\u2009\u03bcm\/day. Enamel DSRs varied between tooth types and crown regions. The NNL was identified in all individuals who survived birth and was absent in one stillbirth, confirming its reliability as an indicator of live birth. Prenatal CFTs fell within ranges reported for full\u2010term gestation, supporting the interpretation that all individuals were born at term. Histologically derived ages differed from recorded ages by an underestimation of 8 to an overestimation of 1\u2009day, with a mean difference of 1\u2009day.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Deciduous dental histology provides an accurate estimate of chronological age for human juveniles in the year after birth. These findings suggest that perinatal age estimates derived from dental histology can be applied in bioarchaeological and forensic contexts.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/ajpa.70231","type":"journal-article","created":{"date-parts":[[2026,3,20]],"date-time":"2026-03-20T07:07:31Z","timestamp":1773990451000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Validating Dental Histology for Perinatal Age Estimation Using Human Deciduous Teeth"],"prefix":"10.1002","volume":"189","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6948-8487","authenticated-orcid":false,"given":"Ani","family":"Martirosyan","sequence":"first","affiliation":[{"name":"Biological Anthropology Unit, Department of Animal Biology Plant Biology and Ecology, Faculty of Biosciences, Universitat Aut\u00f2noma de Barcelona  Barcelona Spain"},{"name":"Research Group in Biological Anthropology (GREAB), Universitat Aut\u00f2noma de Barcelona  Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1676-9773","authenticated-orcid":false,"given":"Javier","family":"Irurita","sequence":"additional","affiliation":[{"name":"Department of Legal Medicine Toxicology and Physical Anthropology, Universidad de Granada  Granada Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Assumpci\u00f3","family":"Malgosa","sequence":"additional","affiliation":[{"name":"Biological Anthropology Unit, Department of Animal Biology Plant Biology and Ecology, Faculty of Biosciences, Universitat Aut\u00f2noma de Barcelona  Barcelona Spain"},{"name":"Research Group in Biological Anthropology (GREAB), Universitat Aut\u00f2noma de Barcelona  Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Judit","family":"Molera","sequence":"additional","affiliation":[{"name":"MECAMAT, Universitat de Vic\u2010Universitat Central de Catalunya  Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2715-3096","authenticated-orcid":false,"given":"Patrick","family":"Mahoney","sequence":"additional","affiliation":[{"name":"School of Natural Sciences, University of Kent  Canterbury UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6016-6630","authenticated-orcid":false,"given":"Xavier","family":"Jordana","sequence":"additional","affiliation":[{"name":"Biological Anthropology Unit, Department of Animal Biology Plant Biology and Ecology, Faculty of Biosciences, Universitat Aut\u00f2noma de Barcelona  Barcelona Spain"},{"name":"Tissue Repair and Regeneration Laboratory (TR2Lab), Institut de Recerca i Innovaci\u00f3 en Ci\u00e8ncies de la Vida i de la Salut a la Catalunya Central (IrisCC)  Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,3,20]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/B978-0-12-814491-6.00011-X"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajpa.22165"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajpa.21258"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469\u20107580.2008.01010.x"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.4324\/9781003385608-6"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajpa.24068"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajpa.1330860216"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.1159\/000242402"},{"key":"e_1_2_11_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jflm.2013.12.002"},{"key":"e_1_2_11_11_1","unstructured":"Boyde A.1963.Estimation of Age at Death of Young Human Skeletal Remains From Incremental Lines in the Dental Enamel. 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