Comparative Analysis of Identical Twins’ Lip Print Pattern

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Peeraporn Kammalun

Abstract

             This research aims for studying the pattern of lip prints in both male and female identical twins and comparing their lip print patterns in accordance with the Suzuki & Tsuchihashi Classification. Subjects in this study which include six pairs of identical twins (three Thai males and three Thai females) have no congenital lip deformity, injury nor inflammation. Lip prints were highlighted with a red frost lipstick and subsequently taken on the cello tape (Scotch brand) and placed on the collective paper. Lip prints were classified into six areas in accordance with the Suzuki & Tsuchihashi Classification.


             Results showed that lip print patterns of the six pairs of identical twins were distributed in all parts of lip areas. In addition, more than one pattern type was observed in each area. When considering pattern types in each pair of the twins, an identical lip print pattern could be seen in some areas but the groove lines were dissimilar. Lip prints of the sixth pair of identical twins showed the most similarity (83%), while the fourth pair, the third, the first, the fifth and the second were 72%, 67%, 58%, 53% and 50% respectively. When comparing the lip print pattern type of male against female, Type I was dominant in the upper middle (UM) part of the lip for both male and female twins, while in the lower middle (LM) part, Type I was dominant for female twins and Type I & Type III were dominant for male twins.

Article Details

How to Cite
Kammalun, P. (2020). Comparative Analysis of Identical Twins’ Lip Print Pattern. Journal of Criminology and Forensic Science, 6(1), 19–32. retrieved from https://so02.tci-thaijo.org/index.php/forensic/article/view/203436
Section
Research Articles

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