Difference in linear enamel hypoplasia frequency between the 16th- to 19th-century agrarian populations of the Korean Joseon dynasty and Siberian Russia

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  • Lee Hyejin
    Department of Forensic Medicine, Seoul National University College of Medicine, Seoul Ministry of National Defense Agency of KIA Recovery & Identification, Seoul
  • Shin Dong Hoon
    Institute of Forensic Science, Seoul National University College of Medicine, Seoul Bioanthropology and Paleopathology Lab, Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul
  • Tataurova Larisa
    Institute of Archaeology and Ethnography of the Siberian Branch of the Russian Academy of Sciences, Omsk
  • Kim Jieun
    Bioanthropology and Paleopathology Lab, Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul
  • Hong Jong Ha
    Institute of Korean Archaeology and Ancient History, Kyung Hee University, Seoul
  • Slepchenko Sergey
    Tyumen Scientific Center of the Siberian Branch of the Russian Academy of Sciences, Tyumen

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  • Difference in linear enamel hypoplasia frequency between the 16<sup>th</sup>- to 19<sup>th</sup>-century agrarian populations of the Korean Joseon dynasty and Siberian Russia

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<p>We studied linear enamel hypoplasia (LEH) in cranial series representative of Eurasian farmers with divergent lifestyles and natural environments: Siberian Russian settlers and Joseon dynasty people. The teeth of Siberian settlers and Joseon people of the 16th–19th centuries were examined in this study. We inspected specimens to detect signs of LEH, and the intergroup prevalence was statistically compared. The proportions of LEH were compared by age and sex across each group. Statistical analysis was performed with R software. Russian settlers’ LEH incidence per individual was 4.1% (3/73), whereas that of the Joseon people was 61.5% (56/91). In the case of LEH per tooth, Russian settlers and Joseon Koreans exhibited rates of 1.9% (24/1297) and 16.8% (336/2001), respectively. The statistical difference in the incidence of LEH between the two groups was highly significant (per individual: P = 9.188 × 10–14; per tooth: P < 2.2 × 10–16). The prevalence of LEH was observed to be much higher in the Joseon population than in the West Siberian settlers. In conclusion, we hypothesize that East Asian people’s physiological stress in childhood was far higher than that of Russian settlers. Historical LEH frequency on the Eurasian continent was truly diverse, possibly due to divergent stress conditions affecting different groups of people.</p>

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