Dental calculus and other dental disease in a human skeleton of the Okhotsk Culture unearthed at Hamanaka‐2 site, Rebun‐Island, Hokkaido, Japan

Abstract

Abstract A human skeleton of the Okhotsk Culture from the Hamanaka‐2 site of Rebun Island, northern part of Hokkaido, was found with abnormally large deposits of dental calculus, especially on the right upper 2nd and 3rd molars. This may relate to the early loss of the corresponding right lower molars. Root apex cementum hyperplasia and resorption of alveolar bone due to periodontal disease were also observed; these may have been associated with the calculus. The severe dental calculus and other diseases observed appear to have nothing to do with the subsistence pattern and ethnological background of the Okhotsk Culture, but rather with the individual's poor oral hygiene and digestive dysfunction.

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