Size and shape of human mandible: Sex differences and influence of age on sex estimation accuracy

Toneva, Diana H.; Nikolova, Silviya Y.; Fileva, Nevena F.; Zlatareva, Dora K.

doi:10.1016/j.legalmed.2023.102322

Cited by 8 publications

(1 citation statement)

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“…The fact that its natural sexual dimorphism provides a foundation for sex determination accentuates its significance as a biometric tool. Sexual dimorphism is indicated by features of the mandible that highlight the distinct appearances between males and females [ 13 , 14 ]. It is customary to use factors like the presence of specific morphological traits and the size of the mandible to estimate a person's sex.…”

Section: Discussionmentioning

confidence: 99%

Exploring Age and Gender Identification Through Mandibular Parameters Using Orthopantomography: An Observational Study

Arthanari,

Senthilkumar,

Ramalingam

et al. 2024

Cureus

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Aim This study aims to examine five mandibular parameters: coronoid ramus height, condylar ramus height, projective ramus height, minimum ramus breadth, and gonial angle, using orthopantomography (OPG). Introduction The mandible, a crucial part of the human skull, demonstrates sexual dimorphism, which makes it an important tool for determining sex in forensic and anthropological investigations. Its form and structure are relatively resistant to significant changes after death. Among all skeletal components, the mandible stands out as a primary indicator of sexual differences. In forensic investigations, establishing the age and sex of an individual is considered a crucial initial step. This process can be particularly challenging in scenarios involving mass casualties, natural calamities, or extensively fragmented remains. Due to its responsiveness to growth patterns, the mandible is adept at accurately determining both age and sex. Materials and methods This study employed a sample size of 500 individuals, split equally between males and females, with 250 participants each. The age bracket chosen for this cohort ranged from 20 to 30 years, considering that bone growth characteristics within this range can assist in sex determination. The height of the mandibular ramus was assessed using Planmeca software, and subsequent data analysis was conducted using SPSS. Results When estimating age, the condylar ramus height exhibited the smallest standard error (0.010), whereas the maximum standard error for the gonial angle was 0.028. Positive t values were observed for the gonial angle (1.182), minimum ramus breadth (0.114), and coronoid ramus height (0.733). In terms of determining sex, the gonial angle, coronoid ramus height, and projective ramus height demonstrated positive coefficient functions, specifically 0.676, 0.090, and 0.286, respectively. Conversely, both the minimum ramus breadth and the condylar ramus height displayed negative values of -0.385 and -0.126, respectively. Conclusion Among the parameters evaluated, condylar ramus height emerges as the most suitable choice for estimating age, while gonial angle, coronoid ramus height, and projective ramus height are preferable for determining sex.

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Section: Discussionmentioning

confidence: 99%