Dental indicators of stress and reduced age at death in prehistoric Native Americans.
Dental indicators of stress and reduced age at death in prehistoric Native Americans.
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史前美洲原住民压力和死亡年龄降低的牙科指标。
DOI：
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发表时间：
1996
影响因子：
2.8
通讯作者：
S. M. Duray
中科院分区：
文献类型：
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作者：
S. M. Duray
大量证据支持这样的假设：发育性牙釉质缺陷代表着压力引起的生长中断。在这项调查中，我们在俄亥俄州渥太华县的史前利本人群中检查了不同种类的牙釉质缺陷与死亡年龄之间的关系。该样本由 143 个人的恒牙组成。根据牙釉质发育缺陷（DDE）指数的标准对缺陷进行分类。本分析使用了 Lovejoy 及其同事（1977 年）确定的多因素死亡年龄。结果显示，与牙齿正常的人相比，有牙釉质缺陷的人的平均死亡年龄明显较低。对于所有检查的缺陷类型都清楚地存在这种模式。没有检测到性别之间的显着差异。牙齿正常的个体的死亡年龄分布接近正态曲线。 35-40 岁年龄段达到了最众值。患有牙釉质缺陷的个体的死亡年龄分布显示出两个峰值。该模式发生在 15-20 岁年龄层，第二个较低的峰值发生在 30-35 岁年龄层。牙釉质缺陷个体的早期死亡可能与产前或产后发育过程中免疫系统的生物损伤有关。
Considerable evidence supports the hypothesis that developmental enamel defects represent stress-induced growth disruptions. In this investigation, the relationship between different kinds of enamel defects and age at death is examined in the prehistoric Libben population from Ottawa County, Ohio. The sample consisted of the permanent dentitions of 143 individuals. Defects were classified based on the criteria of the Developmental Defects of Enamel (DDE) Index. The multifactorial age at death determinations of Lovejoy and coworkers (1977) were used in this analysis. Results reveal a significantly lower mean age at death for individuals with enamel defects vs. individuals with normal teeth. This pattern was clearly present for all defect types examined. No significant differences by sex were detected. The age-at-death distribution for individuals with normal teeth approximated the normal curve. The modal value was reached in the 35-40 year age class. The age-at-death distribution for individuals with enamel defects showed two peaks. The mode occurred in the 15-20 year age class, and the second, lower peak occurred in the 30-35 year age class. The early mortality of individuals with enamel defects may be related to biological damage to the immune system during prenatal or postnatal development.