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Table 1 Distribution of lip grooves in various parts of lips in total population

From: Lip print evaluation of Indian and Malaysian-Chinese subjects by manual and digital methods: a correlational study with gender and ethnicity

Part of lips Lip groove types (Suzuki and Tsuchihashi) n (%)
I I’ II III IV V Mixa
P1 0 (0.0) 6 (2) 4 (1.3) 147 (49) 14 (4.7) 129 (43) 0 (0.0)
P2 1 (0.3) 2 (0.7) 1 (0.3) 110 (36.7) 42 (14) 143 (47.7) 1 (0.3)
P3 1 (0.3) 5 (1.7) 0 (0.0) 163 (54.3) 19 (6.3) 112 (37.3) 0 (0.0)
P4 0 (0.0) 1 (0.3) 0 (0.0) 125 (41.7) 0 (0.0) 172 (57.3) 2 (0.7)
P5 0 0.0) 0 (0.0) 0 (0.0) 51 (17) 15 (5) 232 (77.3) 2 (0.6)
P6 0 (0.0) 1 (0.3) 1 (0.3) 106 (35.3) 0 (0.0) 191 (63.7) 1 (0.3)
Total 0 (0.0) 0 (0.0) 1 (0.3) 116 (38.7) 6 (2) 154 (51.3) 23 (7.6)
  1. aCombination of more than one type of groove