Micro-CT Imaging and Analysis of Enamel Defects on the Early Late Pleistocene Xujiayao Juvenile

doi:10.1002/oa.2504

IVPP-IR > 中科院古脊椎所（2000年以后）

	Micro-CT Imaging and Analysis of Enamel Defects on the Early Late Pleistocene Xujiayao Juvenile
	Xing, S.1; Guatelli-Steinberg, D.2; O'Hara, M.2; Li, J.1; Wei, P.1; Liu, W.1; Wu, X.1
	2016-11-01
发表期刊	INTERNATIONAL JOURNAL OF OSTEOARCHAEOLOGY
卷号	26 期号:6 页码:935-946
文章类型	Article
摘要	Dental pathologies and enamel defects in East Asian hominins have rarely been reported. Here, we systematically document and describe a suite of enamel defects in the Xujiayao juvenile maxilla, an East Asian hominin from the early Late Pleistocene that may represent an unknown hominin lineage. In addition, we determine the chronology of growth disruptions represented by matched linear enamel hypoplasias, evaluate the long-held hypothesis that the large brownish pit on the I-1 is evidence of dental fluorosis and assess the utility of micro-computed tomography (micro-CT) techniques in analyzing enamel defects. With the use of binocular microscopy, scanning electron microscopy (SEM) and micro-CT imaging techniques, the Xujiayao teeth were found to exhibit a high number of pit-form defects seldom seen in the fossil record. By matching the timing of linear enamel hyperplasia acrossmultiple teeth, a minimum of five developmental disruptions were identified, indicating that the Xujiayao juvenile experienced several growth disturbances during its short lifespan. Our SEM and micro-CT analyses suggest that the large pit on the I-1 is an enamel hypoplasia due to its morphology and pre-eruptive enamel thinning. It is not a post-eruptive fluorotic pit, and there is no evidence of chalkiness or opacity associated with dental fluorosis. The micro-CT technique made it possible to verify the presence of enamel hypoplasia and to more precisely quantify defect dimensions, especially in unerupted teeth and shallow hypoplasias that are difficult to detect by binocular microscopy or SEM. Copyright (C) 2015 JohnWiley & Sons, Ltd.
关键词	East Asian Hominin Enamel Defects Micro-ct Teeth Xujiayao
WOS标题词	Science & Technology ; Social Sciences ; Life Sciences & Biomedicine
DOI	10.1002/oa.2504
关键词[WOS]	DENTAL FLUOROSIS ; CHILDHOOD STRESS ; HOMININ TEETH ; HYPOPLASIA ; CHINA ; HOMO ; NEANDERTHALS ; PRIMATES ; FLUORIDE ; REMAINS
收录类别	SSCI ; AHCI
语种	英语
项目资助者	Chinese Academy of Sciences(GJHZ201314 ; National Natural Science Foundation of China(41302016 ; KZZD-EW-03 ; 41272034) ; XDA05130100)
WOS研究方向	Anthropology ; Archaeology
WOS类目	Anthropology ; Archaeology
WOS记录号	WOS:000390318300001
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/7526
专题	中科院古脊椎所（2000年以后）
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 2.Ohio State Univ, Dept Anthropol, Columbus, OH 43210 USA
推荐引用方式 GB/T 7714	Xing, S.,Guatelli-Steinberg, D.,O'Hara, M.,et al. Micro-CT Imaging and Analysis of Enamel Defects on the Early Late Pleistocene Xujiayao Juvenile[J]. INTERNATIONAL JOURNAL OF OSTEOARCHAEOLOGY,2016,26(6):935-946.
APA	Xing, S..,Guatelli-Steinberg, D..,O'Hara, M..,Li, J..,Wei, P..,...&Wu, X..(2016).Micro-CT Imaging and Analysis of Enamel Defects on the Early Late Pleistocene Xujiayao Juvenile.INTERNATIONAL JOURNAL OF OSTEOARCHAEOLOGY,26(6),935-946.
MLA	Xing, S.,et al."Micro-CT Imaging and Analysis of Enamel Defects on the Early Late Pleistocene Xujiayao Juvenile".INTERNATIONAL JOURNAL OF OSTEOARCHAEOLOGY 26.6(2016):935-946.

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