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Molar size sequence in American Blacks.

S K Malhotra, E R Richardson

    Journal of Dental Research
    |February 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    The molar size sequence (MSS) shows a high prevalence of second molars larger than first molars in both American Blacks and Whites. This finding suggests MSS is not a primitive trait in modern populations.

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    Area of Science:

    • Anthropology
    • Human Biology
    • Dental Morphology

    Background:

    • Molar Size Sequence (MSS) is a dental morphological trait.
    • Previous studies have explored MSS in various populations.

    Purpose of the Study:

    • To present data on Molar Size Sequence (MSS) in American Blacks.
    • To compare MSS data between American Blacks and American Whites.

    Main Methods:

    • Data collection on molar dimensions.
    • Statistical comparison of M2 > M1 incidences between ethnic groups.

    Main Results:

    • A high percentage of M2 > M1 (second molar larger than first molar) observed in both American Blacks and Whites.
    • Maxillary M2 > M1 incidence is significantly higher in American Whites than American Blacks.

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  • Mandibular M2 > M1 incidence is significantly higher in American Blacks than American Whites.

    • Conclusions:

    • The M2 > M1 molar sequence is not a primitive trait, as it appears in a significant percentage of modern populations.
    • Ethnic variations in M2 > M1 prevalence exist between American Blacks and Whites, particularly in the maxillary and mandibular arches.