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Lip print pattern (LPP) is unique to each individual. For decades, forensic experts have used LPP for personal identification to solve criminal cases. However, studies investigating ethnic variation in LPP are scanty. Our study wanted to investigate variation in LPP between two ethnic groups, Oraon tribals and Bengalee Hindus, residing in West Bengal, India. A total of 280 participants included 112 Oraons and168 Bengalee Hindus of both. Prints were taken using dark shaded lipstick and transparent cellophane tape and recorded into white A4 sheet. Prints were divided into four quadrants and examined by magnifying glass. For analysis of results, classification of Suzuki and Tsuchihashi was followed. A p value of 0.05 was considered to be statistically significant. It was observed that Type II pattern was dominant in first and second quadrants in both ethnic groups, irrespective of sex. Combination of Type II+III was found to be the most common pattern in males among both Oraons (16.2%) and Bengalee Hindus (12.2%) whereas in females Type II pattern (25.0%) among Oraons and Type III pattern among Bengalee Hindus (11.4%) was the most common. Chi square test showed statistically significant difference among females (p

The objective of the study was to specify the method with the highest probability of correct sex identification based on lip furrow pattern. Three methods were verified: Vahanwala’s method, identification based on the mid-section of lower lip print and our own method. The examined group included 242 persons aged 15-30 years, 68.6% females and 31.4% males. Cheilograms were taken with the method proposed by Vanahwala, modified in such a way that the prints of lower and upper lips were taken separately. The lip furrow patterns were classified according to Suzuki and Tsuchihashi, modified to include horizontal furrows which were considered by Renaud. In all the quadrants patterns II, III and VI prevailed among males and patterns I, I’ and II among females. Females were more frequently diagnosed correctly than males. Our method in which all the lip print was analysed without division into quadrants was the most effective, while Vahanwala’s method was the least so.

The objective of the study was to specify the method with the highest probability of correct sex identification based on lip furrow pattern. Three methods were verified: Vahanwala's method, identification based on the mid-section of lower lip print and our own method. The examined group included 242 persons aged 15- 30 years, 68.6% females and 31.4% males. Cheilograms were taken with the method proposed by Vanahwala, modified in such a way that the prints of lower and upper lips were taken separately. The lip furrow patterns were classified according to Suzuki and Tsuchihashi, modified to include horizontal furrows which were considered by Renaud. In all the quadrants patterns II, III and VI prevailed among males and patterns I, I' and II among females. Females were more frequently diagnosed correctly than males. Our method in which all the lip print was analysed without division into quadrants was the most effective, while Vahanwala's method was the least so. [ABSTRACT FROM AUTHOR]