 Aim 1. To compare the lip print, rugae pattern, & tongue print among three different population groups. 2. To study the predominant type of lip, rugae and tongue patterns in individual group of population. 3. To evaluate the efficacy of three parameters in Sex determination & population sub typing.  Materials and Method The study included 90 subjects 30 Karnataka, 30 Kerala and 30 Tamil nadu subjects. Each group consisted of 15 males & 15 females in the age group of 18 to 30 years. Each individuals lip prints, palatal rugae,& tongue prints were studied using classifications given by Tsuchihashi, Lysell and Stefanescu et al. respectively and the results obtained were stastically analysed using chi square test and the P value less than 0.05 were considered significant.  Results Type 3 lip print was found to be the most predominant among males and Type 1 in females in all the three populations. The major rugae shape among males was wavy and in females it was straight in all the three population. The U- shaped tongue was predominant among males and V- shaped among females and the longitudinal grooves showed no significant difference among males and females and between the states.  Conclusion In the present study, we have made an attempt to study the lip prints, rugae pattern and tongue prints among three different population groups of India. Further studies with larger sample size are needed to overcome the shortcomings of the study.

Keywords : Forensic Odontology, Chelioscopy, Palataloscopy, Tongue Prints.