Palatal Rugae Pattern Identification to Determine Family Lineage in Minangkabau, West Sumatera, Indonesia

Abstract

Background: This paper discusses palatal rugae patterns and their contribution in the identiication of individuals and the determination of family lineage in West Sumatera, Indonesia. Identifying an individual is a prerequisite for the issuance of death certiicate as well as for personal, social and legal reasons. The most common techniques used in this context are dental records, ingerprint and DNA comparisons. However, under certain circumstances, these cannot always be used. But interestingly, palatal rugae patterns are preservable because they are impervious to disasters and hostile conditions and can be used as alternative human identiication techniques. This paper argues that the study of palatal rugae (rugoscopy) cannot only help to reveal a person's identity but also to determine their family lineage. Objective: The present study was carried out to ascertain whether there is any hereditary patterns in the palatal rugae patterns of the mother, father, and the ofpring in one family. Method: This is a cross sectional study of 48 samples consisting of 12 families in Luhak Nan Tigo. The parents and ofspring (son or daughter) of each family were randomly selected. Palatal rugae impression was recorded using alginate while palatal rugae patterns were noted and recorded. One Way ANOVA test (SPSS 17) was used as statistical anaysis method. Result : The study shows that there is a signiicant similarity in curved, wavy, and straight rugae patterns (p> 0.05) as well as in primary, secondary, and fragmented rugae based on the family tie between the father, mother, sons and daughters of the Minangkabau ethnic. Unilateral and circular rugae tests are insigniicant (p <0.05). Conclussion : This is a cross sectional study whose results are only based on 48 samples consisting of 12 families, therefore further studies are needed with a larger sample quantity. The results of this study indicate the role of factors in the patterns of palatal rugae.

Palatal Rugae and Lip Print Pattern Study as the Alternative Method of Mass Nature Disaster Victim Identificationpalatal Rugae and Lip Print Pattern Study as the Alternative Method of Mass Nature Disaster Victim Identification

“…On boys, the most shape derived from his father is circular pattern. This is similar to our previous pilot project (Kasuma et al, 2014) states that the rugae circular pattern is similar between children and parents. This result is in concordance with Pasiga and Hardianti's (Daeng Pasiga and Hardianti, 2017) who did study on Bugise ethnic.…”

“…Genes regulate the orientation of collagen fibers during embryogenesis and the diversity of palatine rugae patterns in different populations. Palatine rugae is formed in the 3rd intrauterine month, its growth is regulated by epithelial-mesenchymal interactions in which extracellular matrix molecules are expressed during this development (Kasuma et al, 2014).…”