Morphologic Patterns of Lip Prints in a Portuguese Population: A Preliminary Analysis

Authors

  • Vírginia A. Costa D.M.D.,

    1. Faculdade de Medicina Dentária da Universidad do Porto, Rua, Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal.
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  • Inês M. Caldas Ph.D.

    1. Faculdade de Medicina Dentária da Universidad do Porto, Rua, Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal.
    2. CENCIFOR – Center of Forensic Sciences, Portugal Associação Centro de Ciências Forenses, Largo da Sé Nova, INML IP, 3000-213 Coimbra, Portugal.
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Additional information and reprint requests:
Inês M. Caldas, Ph.D.
Faculdade de Medicina Dentária da Universidade do Porto
Rua Dr. Manuel Pereira da Silva
4200-393 Porto
Portugal
E-mail: icaldas@fmd.up.pt

Abstract

Abstract:  Lip prints are thought to have the ability to distinguish individuals and, hence, have a potential use in human identification purposes. However, questions remain regarding their utility for sex determination. This study aimed to classify lip prints for different individuals in a Portuguese population and to determine whether sex differences exist. Lip prints of 25 females and 25 males were obtained using dark-colored lipstick and cellophane tape. Lip prints were analyzed using a magnifying lens and classified according to the Suzuki and Tsuchihashi classification. A Type II pattern was found to be most common. A comparison of lip-print patterns between males and females showed results with a statistically significant difference: Type III pattern was most common in males, and a Type II pattern in females. This study corroborates the hypothesis that lip prints are able to distinguish individuals and may be useful in sex determination.

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