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The deflecting wrinkle on the teeth of Icelanders and the Mongoloid dental complex
Author(s) -
Axelsson Gudjón,
Kirveskari Pentti
Publication year - 1977
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.1330470212
Subject(s) - mongoloid , wrinkle , sexual dimorphism , trait , orthodontics , molar , dentistry , geography , medicine , biology , zoology , population , genetics , environmental health , computer science , programming language
Three local populations from Northeast Iceland are surveyed for the occurrence of the deflecting wrinkle of the metaconid on second deciduous and first permanent lower molars. The trait occurs more frequently on dm2 than on M1, and no sexual dimorphism is found, as expected. However, the frequencies are clearly within those predicted by the Mongoloid dental complex for Mongoloid populations. It is therefore suggested that the inclusion of the deflecting wrinkle in the Mongoloid dental complex be re‐evaluated, and the racial diagnostic value of the trait taken with reservation.