SIZES OF DECIDUOUS TEETH IN 47,XYY MALES

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  • 1 January 1977
    • journal article
    • research article
    • Vol. 29  (5) , 486-489
Abstract
Deciduous teeth of six 47,XYY boys were examined, and the tooth sizes were larger than those of controls. A factor or factors which influence excess dental growth in 47,XYY males are probably in effect before the age of a few months. The time needed for the achievement of final tooth growth excess seems to be limited to a 9-18 mo. period. Excess dental growth of 47,XYY individuals is apparently a developmentally stable process, and the Y chromosome apparently regulates quantitative variation of the teeth in normal males. These observations on tooth sizes in 47,XYY males suggest a chromosomal influence on dental determination.