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Third molar agenesis in a trihybrid Brazilian population
Author(s) -
Crispim J.,
Trigueiro K. G.,
De Sá e Benevides Filho F. R.,
Salzano F. M.
Publication year - 1972
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.1330370214
Subject(s) - molar , homogeneous , population , agenesis , quadrant (abdomen) , demography , geography , biology , orthodontics , anatomy , mathematics , medicine , sociology , surgery , combinatorics
The frequency of missing third molars is about eight per cent per quadrant in a sample of 490 males of the mixed White/Negro/Indian population of Natal, Brazil. Absence of the four third molars appears in two per cent of the individuals of the sample. The degree of asymmetry for the trait was not marked. No differences were observed when the persons were separated on morphological grounds as Whites or Negroids suggesting that these segregants may be genetically homogeneous in relation to this and other characteristics.