Evaluation of Palatal Rugae Pattern in Identification and Sex Determination in Indian Children

Prashant Babaji, Siddik Abdul Jalal, Shashibhushan Kukkalli Kamalaksharappa


Objective: To analyse the role of palatal rugoscopy in person identification and sex determination. Material and Methods: The study group consisted of 30 children having mixed dentition within the age range of 8-15 years. Based on the length of the rugae, it was classified as primary (>5mm), secondary (3-5mm) and fragmentary (<3mm) and according to shape, (straight, curve, circular and wavy). Association between rugae patterns and sexual dimorphism were tested and statistically analysed using Chi-square test and stepwise discriminant function analysis with statistical software SPSS version 17.0. Results: Results of the present study indicates that there was higher primary rugae patterns (p>0.05) among boys over girls (boys - 224 and girls - 213) and circular rugae pattern and secondary rugae were more among girls (88) over boys (56) (p<0.05). Converging unification pattern was more among boys (17) over girls (11), whereas diverging pattern was more among girls (19) over boys (13), but there was no difference for wavy and curved patterns between boys and girls. These results were confirmed with standardized canonical discriminant function coefficient test. Conclusion: The present study hypothesizes the uniqueness of the rugae pattern in person identification as no two palates showed similar type of rugae in either of the genders. Palatal rugae revealed a specific pattern in unification among boys and girls. Discriminant function analysis enabled sex determination of individuals.


Forensic Anthropology; Forensic Dentistry; Sex Determination Analysis.

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Babu GS, Bharath TS, Kumar NG. Characteristics of palatal rugae patterns in West Godavari population of India. J Clin Diagn Res 2013; 7(10):2356-9. doi: 10.7860/JCDR/2013/6058.3523.

Selvamani M, Hosallimath S, Basandi PS, Yamunadevi A. Dimensional and morphological analysis of various rugae patterns in Kerala (South India) sample population: A cross-sectional study. J Nat Sc Biol Med 2015; 6(2):306-9. doi: 10.4103/0976-9668.159985.

Paliwal A, Wanjari S, Parwani R. Palatal rugoscopy: Establishing identity. J Forensic Dent Sci 2010; 2(1):27-31. doi: 10.4103/0974-2948.71054.

Shanmugam S, Anuthama K, Shaikh H, Murali K, Suresan V, Nisharudeen K. Palatal rugae in population differentiation between South and North Indians: A discriminant function analysis. J Forensic Dent Sci 2012; 4(2):75-9. doi: 10.4103/0975-1475.109890.

Thomas CJ, Kotze TJ. The palatal rugae pattern: A new classification. J Dent Assoc S Afr 1983; 38(3):153-7.

Kapali S, Townsend G, Richards L, Parish T. Palatal rugae patterns in Australian Aborigines and Caucasians. Aust Dent J 1997; 42(2):129-33. doi: 10.1111/j.1834-7819.1997.tb00110.x.

Subramanian PR, Jagannathan NI. Palatal rugoscopy as a method of sex determination in forensic science. Asian J Pharm Clin Res 2015; 8(2):136-38.

Jaisingh R, Deshmukh S, Srilatha KT. Palatal rugae patterns as an adjuvant to gender determination in forensic identification procedures in a paediatric population. J Forensic Sci Criminol 2016; 4(3):305-10. doi: 10.15744/2348- 9804.4.305.

Sekhon HK, Sircar K, Singh S, Jawa D, Sharma P. Determination of the biometric characteristics of palatine rugae patterns in Uttar Pradesh population: A cross-sectional study. Indian J Dent Res 2014; 25(3):331-5. doi: 10.4103/0970-9290.138331.

Chopra A, Rao NC, Gupta N, Vashisth S. Palatal rugae and arch length: A tool in gender determination. Univ Res J Dent 2013; 3(2):54-9.

Harchandani N, Marathe S, Rochani R, Nisa SU. Palatal rugoscopy: A new era for forensic identification. J Indian Acad Oral Med Radiol 2015; 27(3):393-8. doi: 10.4103/0972-1363.170469.

Bharath ST, Kumar GR, Dhanapal R, Saraswathi TR. Sex determination by discriminant function analysis of palatal rugae from a population of coastal Andhra. J Forensic Dent Sci 2011; 3(2):58-62. doi: 10.4103/0975-1475.92144.

Nayak P, Acharya AB, Padmini AT, Kaveri H. Differences in the palatal rugae shape in two populations of India. Arch Oral Biol 2007; 52(10):977-82. doi: 0.1016/j.archoralbio.2007.04.006.

DOI: http://dx.doi.org/10.4034/PBOCI.2018.181.39

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