Ortopantomographic Blind Test of Mandibular Ramus Flexure as a Morphological Indicator of Sex in Chilean Young Adults

Galdames, Iván Suazo; Valenzuela, Jaime San Pedro; Quezada, Nilo Alejandro Schilling; Contreras, César Eduardo Celis; Rivas, José Alejandro Hidalgo; López, Mario Cantín

doi:10.4067/s0717-95022008000100015

Cited by 6 publications

(3 citation statements)

References 17 publications

(22 reference statements)

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“…In the present study, the technique proved accurate for correctly identifying males than females. Moreover, the results were better than for other research in adults, which identified the prediction accuracy of 48.3% for males (Suazo Galdames et al, 2008). Although we found a discrete accuracy of FA in sexual dimorphism, this minimally-invasive technique is suitable for forensic investigations when associated with other methods to improve results in sex estimation.…”

Section: Discussioncontrasting

confidence: 59%

Age and sex estimation using fractal analysis in Brazilian adults: a discriminant analysis

Menezes

Dinísio

Oliveira

et al. 2021

RSD

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This study assessed the accuracy of fractal analysis (FA) to estimate chronological age and sex in Brazilian adults for forensic investigations. The gender-balanced sample comprised lateral cephalometric radiographs of 120 individuals, stratified according to age (20-29, 30-39, 40-49, 50-59 years) and sex (female and male). A trained calibrated examiner measured the fractal dimension (FD) of the mandibular ramus and mandibular angle. Linear regression and multiple logistic discriminant analysis were carried out to explore the accuracy of FA. For all analyses, p-values < .05 indicated statistical significance. Overall, mean FD values were 1.49±0.10 for the mandibular ramus and 1.48±0.09 for mandibular angle. Results were more accurate in males than females for discriminating age and sex. The multiple discriminant analysis indicated that FA distinguished sex in 61.7% males and 58.3% females. In addition, the mean difference between actual and predicted value was 9.5 years and 10.1 years for men and women, respectively. Fractal analysis accurately identified sex- and age-related differences in the trabecular pattern of the mandible of Brazilian adults, confirming its utility for forensic investigations. Further studies investigating other populations are needed to assess the accuracy of FA for Forensic Dentistry.

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Section: Discussioncontrasting

confidence: 59%

Age and sex estimation using fractal analysis in Brazilian adults: a discriminant analysis

Menezes

Dinísio

Oliveira

et al. 2021

RSD

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“…In our study the parameter ramus, flexure was not included as this parameter did not give any conclusive evidence ofsexual dimorphism in the past studies reported by Shiva Prakash, Aparna et al ., and Galdames. [ 11 12 13 14 ]…”

Section: Discussionmentioning

confidence: 99%

Radiographic evaluation of mandibular ramus for gender estimation: Retrospective study

Damera

Mohanalakhsmi

Yellarthi

et al. 2016

J Forensic Dent Sci

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Background and Aims:Gender estimation is a very important part of a study in the field of anthropology and forensic sciences. In the skeleton, gender estimation is the first step of the identification process as subsequent methods for age and stature estimation are sex-dependent. Skeletal components such as the pelvis and skull are investigated for gender estimation and the mandible is a practical element to analyze sexual dimorphism in fragmented bones. The aim of the present study is to measure, compare, and evaluate various measurements of the mandibular ramus, observed in digital orthopantomographs and also to assess the usefulness of the mandibular ramus as an aid in gender estimation.Materials and Methods:A radiographic retrospective study was conducted using 80 digital orthopantomographs to measure, compare, and evaluate the measurements of the mandibular ramus such as maximum ramus breadth, maximum ramus height, and coronoid heightusing Planmeca ProMax® digital machine to assess the usefulness of mandibular measurements in gender estimation.Results:Descriptive statistics of various measurements and associated univariate F ratios for both the sexes were determined. Four variables were significant predictor in classifying a given sample (P < 0.001). The F-statistic values indicated that measurements expressing the greatest sexual dimorphism were noticed in the maximum ramus height.Conclusion:Mandibular ramus can be considered as a valuable tool in gender estimation and the most reliable measurements were obtained of linear objects in the horizontal plane by digital panoramic imaging.

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“…A synopsis of various radiographic studies on mandible in sex dimorphism was presented in Table 1. [45678910111213141516171819] And synopsis of skeletal parameters of morphometric studies on dry mandible in sex dimorphism was presented in Table 2. [12202122232425262728293031323334353637]…”

Section: Introductionmentioning

confidence: 99%

Is there enough evidence so that mandible can be used as a tool for sex dimorphism? A systematic review

Hazari

Hazari²,

Mishra

et al. 2016

J Forensic Dent Sci

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Statement of Problem:One of the most challenging tasks for forensic science is to identify the unknown human skeletal remains of deceased individuals. Study of sex by distinguishing the various morphological characteristics of bones is utmost important in forensic anthropology and for medico-legal assessment.Purpose:The purpose of this article is to review the literature, to find if there is sufficient evidence to establish the use of mandible in sex identification.Materials and Methods:An electronic search was performed to identify suitable literature, using database of MEDLINE, PubMed, and EBSCOhost. Published articles in between January 2000 and April 2015 were searched. The main focus of search was on the various parameters of mandible studied in last 15 years for sex dimorphism. The focus was on the articles published on radiographic studies as well as on morphometric studies of dry mandible in which skeletal parameters were studied. The screening of titles and abstracts were done, suitable literature that fulfilled the inclusion criteria was selected for a full-text reading.Results:The initial literature search resulted in 89 articles, out of which only 36 articles fulfilled the inclusion criteria and were included in this systematic review.Conclusion:Out of 16 radiographic studies, 14 showed statistically significant results that the adult mandible could be used with increased sensitivity and objectivity to identify both sex and population affinity compared to other standard analytical techniques, whereas two studies showed insignificant results. Out of 20 morphometric studies of dry mandible 15 studies showed a positive correlation between sex dimorphism and mandibular parameters and five studies did not show any positive correlations between the two.

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Ortopantomographic Blind Test of Mandibular Ramus Flexure as a Morphological Indicator of Sex in Chilean Young Adults

Cited by 6 publications

References 17 publications

Age and sex estimation using fractal analysis in Brazilian adults: a discriminant analysis

Age and sex estimation using fractal analysis in Brazilian adults: a discriminant analysis

Radiographic evaluation of mandibular ramus for gender estimation: Retrospective study

Is there enough evidence so that mandible can be used as a tool for sex dimorphism? A systematic review

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