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Morphology of Liberian Negro deciduous teeth. II. Arch dimensions and occlusion
Author(s) -
Moss Melvin L.,
Chase Patrica S.
Publication year - 1966
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.1330250306
Subject(s) - overbite , overjet , deciduous , occlusion , dental arch , white (mutation) , population , orthodontics , dentistry , abrasion (mechanical) , geography , medicine , malocclusion , demography , biology , sociology , ecology , biochemistry , gene , cardiology , mechanical engineering , engineering
Abstract Liberian Negro deciduous dentitions have arch dimensions which significantly exceed those of a variety of White populations. Winged incisors were present in 14.3% of the Negro population, again exceeding White values. No differences were noted in incisal overbite or overjet. Diastemal spaces were greater in the Negro dentitions than in the White, but the significance of this is as yet unknown. An exceptional finding was the absolute lack of Class II (distocclusion) in the Negro series. A discussion of functional occlusion stressed the necessity for the inclusion of such dynamic factors as dental abrasion, mesial migration and physiological rest position in future studies of comparative dental anthropology.