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Cusp Size, Sexual Dimorphism, and the Heritability of Maxillary Molar Cusp Size in Twins

College of Dentistry, University of Kentucky, Lexington, Kentucky 40506, USA

The quantitative hierarchy for maxillary molar cusp size is established. Sexual dimorphism, not present in measures of individual cusp size, is present when the size contributions of individual cusps and ridges are summed. The twin data analyses show a low level of hereditary variability for these dental traits.

Journal of Dental Research, Vol. 55, No. 2, 189-195 (1976)
DOI: 10.1177/00220345760550020601


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