Micro-CT Imaging and Analysis of Enamel Defects on the Early Late Pleistocene Xujiayao Juvenile
文献类型：期刊论文
| 作者 | Xing, S.1; Guatelli-Steinberg, D.2; O'Hara, M.2; Li, J.1; Wei, P.1; Liu, W.1; Wu, X.1 |
| 刊名 | INTERNATIONAL JOURNAL OF OSTEOARCHAEOLOGY
 |
| 出版日期 | 2016-11-01 |
| 卷号 | 26期号:6页码:935-946 |
| 关键词 | East Asian Hominin Enamel Defects Micro-ct Teeth Xujiayao |
| DOI | 10.1002/oa.2504 |
| 文献子类 | Article |
| 英文摘要 | 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. |
| WOS关键词 | DENTAL FLUOROSIS ; CHILDHOOD STRESS ; HOMININ TEETH ; HYPOPLASIA ; CHINA ; HOMO ; NEANDERTHALS ; PRIMATES ; FLUORIDE ; REMAINS |
| WOS研究方向 | Anthropology ; Archaeology |
| 语种 | 英语 |
| WOS记录号 | WOS:000390318300001 |
| 资助机构 | Chinese Academy of Sciences(GJHZ201314 ; National Natural Science Foundation of China(41302016 ; KZZD-EW-03 ; 41272034) ; XDA05130100) |
| 源URL | [http://124.16.247.212/handle/311034/7526]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 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. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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