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The Nonmetric Cusp Traits of Maxillary Molars in Tamil Population: A Cross Sectional, Descriptive and Sex Identification study using the Turner Scott dental Anthropology Standards

Year: 2024

Type: article

Abstract: Context: Dental nonmetric traits, the morphological characteristics in teeth exhibit variations between populations and sexes. Aim: The aim of the study was to analyse the expression of the cusp traits in maxillary molars in the Tamil Nadu population. Settings and Design: A descriptive, cross-sectional, and population-based study was designed. Methods and Material: The pre-treatment dental models of 236 boys (44.6%) and 293 girls (55.45%) in Tamil Nadu and Pondicherry were used for this study. The expressions of the cusp of Carabelli trait in the maxillary 1 st molar and the hypocone trait in the 2 nd molar were recorded using the Turner-Scott Dental Anthropology standards. Statistical Analysis Used: The non-parametric Mann–Whitney U test was used to compare the results of males and females. Chi-square test was used to test the inter-trait and intra-trait association. The discriminant function analysis was performed to test the potential of the two traits for sex classification. Results: The prevalence of cusp of Carabelli was only in 7.5%–11.4% of the study sample. The hypocone presence was observed in around 53%–61%. Only 57%–59% of the correct sex classification could be possible using the studied two traits. Conclusions: There was a low prevalence of the maxillary 1 st molar Carabelli’s trait in the Tamil population when compared to the prevalence of the distolingual cusp (hypocone) trait in the maxillary 2 nd molar. There was an excellent intra-trait correlation while the inter-trait correlation is weak. However, there was a significant association between the two traits on both sides.

Source: Indian Journal of Dental Research

DOI: 10.4103/ijdr.ijdr_229_23

Authors: Jayasankar P. Pillai, Girish Parmar, Jayantkumar M. Vyas, Rajesh Babu

Institutions: National Forensic Sciences University, Government Dental College and Hospital

Language: English

Topic: Forensic Anthropology and Bioarchaeology Studies

Subfield: Archeology (arts and humanities)

Field: Arts and Humanities

Domain: Social Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $150