Sex determination using discriminant function analysis in Indigenous (Kurubas) children and adolescents of Coorg, Karnataka, India: A lateral cephalometric study

Abstract

To test the validity of sex discrimination using lateral cephalometric radiograph and discriminant function analysis in Indigenous (Kuruba) children and adolescents of Coorg, Karnataka, India. Six hundred and sixteen lateral cephalograms of 380 male and 236 females of age ranging from 6.5 to 18 years of Indigenous population of Coorg, Karnataka, India called Kurubas having a normal occlusion were included in the study. Lateral cephalograms were obtained in a standard position with teeth in centric occlusion and lips relaxed. Each radiograph was traced and cephalometric landmarks were measured using digital calliper. Calculations of 24 cephalometric measurements were performed. Males exhibited significantly greater mean angular and linear cephalometric measurements as compared to females ( < 0.05) (Table 5). Also, significant differences ( < 0.05) were observed in all the variables according to age (Table 6). Out of 24 variables, only ULTc predicts the gender. The reliability of the derived discriminant function was assessed among study subjects; 100% of males and females were recognized correctly. The final outcome of this study validates the existence of sexual dimorphism in the skeleton as early as 6.5 years of age. There is a need for further research to determine other landmarks that can help in sex determination and norms for Indigenous (Kuruba) population and also other Indigenous population of Coorg, Karnataka, India.

Facial indices in lateral cephalogram for sex prediction in Chennai population – A semi-novel study

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“…did a discriminate function analysis on a lateral cephalogram and found it as a reliable tool in determining the sex of an individual. [10]…”

Age Estimation using Cephalometrics—A Cross-Sectional Study among Teenagers of Salem District, Tamil Nadu

“… Lateral cephalogram is exemplary for the analysis of skull as it provides information of a variety of anatomical points in a single radiograph, and also, it supplies the details of morphological architectures and intracranial niceties for evaluation. [ 8 , 9 ] …”

Cephalometric radiograph-based approach for sex determination using maxillary sinus index in Surabaya, Indonesia

“…Among these, the lateral cephalogram is highly regarded for its ability to provide detailed architectural and morphological information about the skull, enabling supplementary characteristics and multiple points of comparison to be identified. Moreover, this radiograph is cost-effective, easily accessible, and reliable for medical diagnoses, treatment planning, and forensic and anthropology studies (Devang Divakar et al, 2016;Abasi et al, 2019). , 2017).…”