Abstract
The Minatogawa man hominid fossils are human fossils from Japan and the oldest from the Late Pleistocene period. Of the Minatogawa skeletal remains, Minatogawa Man No. 1 is best preserved and is accompanied by the mandible. When the maxillary and mandibular dentitions of Minatogawa Man No. 1 were occluded, the dentitions did not align with one another. The attrition pattern of the maxillary teeth was of an inclined type, which tilted from the buccal to lingual side, whereas that of the mandibular dentition was of a horizontal type. Moreover, both left maxillary and mandibular third molars exhibited attrition on the distal portion of the occlusal surface. The occlusal surfaces did not complement each other in the range of mandibular movement without temporomandibular joint dislocation and the curve of Spee produced by the left maxillary and mandibular occlusal planes did not match. These findings suggest that the maxilla and mandible of Minatogawa Man No. 1 are, in fact, from different individuals.
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References
Ackermann F (1953) Le Méchanisme des Machoires. Masson, Paris.
Alt KW, Pichler SL (1998) Artifical modifications of human teeth. In: Dental Anthropology (Alt KW, Rösing FW, Nicola MT, eds). Springer, Wien, 387–415.
Baba H, Narasaki S, Ohyama S (1998) Minatogawa homonid fossils and the evolution of Late Pleistocene humans in East Asia. Anthropol Sci 106 (Suppl.), 27–45.
Hall RL (1976) Functional relationships between dental attrition and the helicoidal plane. Am J Phys Anthropol 45, 69–75.
Hanihara K, Ueda H (1982) Dentition of the Minatogawa man. In: The Upper Pleistocene Man from the Island of Okinawa, University Museum Bulletin, The University of Tokyo, Vol. 19 (Suzuki H, Hanihara K, eds). University of Tokyo Press, Tokyo, 1–60.
Jarabak JR (1963) Technique and Treatment with the Light-Wire Appliances. CV Mosby, St Louis.
Kaifu Y (2000) Was extensive tooth wear normal in our ancestors? A preliminary examination in the genus Homo. Anthropol Sci 108, 371–85.
Kelley MA, Larsen CS, eds (1991) Advances in Dental Anthropology. Wiley-Liss, New York.
Kobayashi H, HiroseY, Sugino M, Watanabe N (1974) TK-99. Minatogawa. Radiocarbon 16, 381–7.
Matsu’ura S (1982) Relative dating of the Minatogawa man by fluorine analysis. In: The Upper Pleistocene Man from the Island of Okinawa, University Museum Bulletin, The University of Tokyo, Vol. 19 (Suzuki H, Hanihara K, eds). University of Tokyo Press, Tokyo, 205–8.
Nemoto K (1962) A study on the three dimensional range of the mandibular movement at the incision inferius. J Jpn Prostho-dontic Soc 6, 1–40 (in Japanese).
Scott EC (1979) Dental wear scoring technique. Am J Phys Anthropol 51, 213–18.
Smith BH (1984) Pattern of molar wear in hunter-gatherers and agriculturists. Am J Phys Anthropol 63, 39–56.
Suzuki H (1982) Skull of the Minatogawa man. In: The Upper Pleistocene Man from the Island of Okinawa, University Museum Bulletin, The University of Tokyo, Vol. 19 (Suzuki H, Hanihara K, eds). University of Tokyo Press, Tokyo, 7–49.
Suzuki H, Tanabe G (1982) Introduction of the Minatogawa man. In: The Upper Pleistocene Man from the Island of Okinawa, University Museum Bulletin, The University of Tokyo, Vol. 19 (Suzuki H, Hanihara K, eds). University of Tokyo Press, Tokyo, 1–5.
Trinkaus E (1978) Dental remains of the Shanidar adult Neanderthals. J Hum Evol 7, 369–82.
Tulley WJ, Campbell AC (1970) A Manual of Practical Orthodontics, 3rd edn. John Wright and Sons, Bristol.
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Kodera, H. Inconsistency of the maxilla and mandible in the Minatogawa Man No. 1 hominid fossil evaluated from dental occlusion. Anato Sci Int 81, 57–61 (2006). https://doi.org/10.1111/j.1447-073X.2006.00127.x
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DOI: https://doi.org/10.1111/j.1447-073X.2006.00127.x