Mandibular sexual dimorphism analysis in CBCT scans

Gamba, Thiago de Oliveira; Alves, Marcelo Corrêa; Haiter-Neto, Francisco

doi:10.1016/j.jflm.2015.11.024

Cited by 62 publications

(48 citation statements)

References 23 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the present study BG presented the greatest AUC and the best balance between sensitivity and specificity, corroborating previous studies in Brazilian populations (Gamba et al, 2016;Lopez-Capp et al, 2018). The mean values found for BG in the present study were similar to those found for individuals from Northern Thailand (Ongkana & Sudwan) and for Black South Africans (Dayal et al) (Table VI).…”

Section: Discussionsupporting

confidence: 92%

Sex Prediction From Metrical Analysis of Macerated Mandibles of Brazilian Adults

Alves

Deana

2019

Int. J. Morphol.

View full text Add to dashboard Cite

Determining sex may be more difficult in cases such as natural disasters, accidents or situations in which bodies are subjected to high temperatures, when individuals must be identified from their remains. The mandible is a very strong bone, presents high sexual dimorphism and may be useful in forensic identification. The object of the present study was to determine sex by metrical analysis of macerated mandibles of Brazilian adults. We analysed 113 fully dentate macerated mandibles of Brazilian adults, 47 belonging to women and 66 to men. We took 8 measurements using a digital calliper: bicondilar breadth (BC), bigonial breadth (BG), bimental foramina breadth (BM), distance between mental foramen and mandibular base (MF-MB), mandibular ramus height (MRH), maximum mandibular ramus breadth (MaRB), minimum mandibular ramus breadth (MiRB) and mandibular body length (MBL). The t test was used for statistical analysis of independent samples, and a ROC curve was constructed. Direct and stepwise discriminant analysis was carried out. SPSS v.22 software was used, with a significance threshold of 5 %. We observed that all the measurements presented statistically significant differences between the sexes, with greater mean values for men than for women. BG was the measurement which presented the greatest area under curve (AUC), and the highest correct prediction, followed by MRH and BC. The BM distance presented the smallest AUC and lowest correct prediction. The mean correct prediction was 85 % for direct discriminant analysis and 83.2 % for stepwise discriminant analysis, using the BG and MRH measurements. The measurements analysed in this study can be used to determine the sex of Brazilian individuals.

show abstract

Section: Discussionsupporting

confidence: 92%

Sex Prediction From Metrical Analysis of Macerated Mandibles of Brazilian Adults

Alves

Deana

2019

Int. J. Morphol.

View full text Add to dashboard Cite

show abstract

“…In the present study, the female angle of mandible was observed to be greater than male. However, Ayoub et al (2009) and Gamba et al (2016) reported that males had a greater angle of mandible than their counterparts in Lebanese and Brazilian populations, respectively (Table IV). This study reported no statistically significant correlation between the angle of mandible and sex.…”

Section: Discussionmentioning

confidence: 95%

The Morphometry of the Angle of Mandible and its Correlation with Age and Sex in the eThekwini Metropolitan Region: A Panoramic Study

et al. 2017

View full text Add to dashboard Cite

PILLAY, S.; ISHWARKUMAR, S.; DE GAMA, B. Z. & PILLAY, P.The morphometry of the angle of mandible and its correlation with age and sex in the eThekwini metropolitan region: A panoramic study. Int. J. Morphol., 35(2):661-666, 2017. SUMMARY:The angle of mandible is formed by the tangent line joining the posterior margin of the ramus and the base of the mandible. The angle of mandible has population-specific characteristics therefore; it is imperative to the field of forensic anthropology for age and sex determination. Literary reports regarding the use of the angle of mandible for age and sex determination vary, as some studies support it, while other studies have documented inefficiencies. Therefore, the aim of this investigation was to document the morphometry of the angle of mandible and to determine if a correlation between the angle of mandible, age and sex exists. Sixty four digital panoramic radiographs (n=128) of individuals between 16-30 years were morphometrically analysed using the Dicom Digital Imaging Software. The data was captured and analysed using the Statistical Package for Social Science (SPSS version 23.0). Despite females having a greater angle of mandible than males, no statistically significant correlation was found between the size of the angle of mandible and sex (p=0.088). The angle of mandible was observed to decrease with advancement of age, however only the 16-19 year age cohort displayed a statistically significant correlation with the size of the angle of mandible (p=0.006). Therefore, this study concluded that the angle of mandible may not be a useful indicator of sex, but may be a reliable indicator of age for individuals between 16-19 years in the eThekwini Metropolitan region.

show abstract

“…Studies that used the mandible evaluated various mandibular traits and assessed their validity for use as sex identifiers. Morphometric measurements made on dry mandibles (Ongkana & Sudwan, 2009;Vinay et al, 2013;Datta et al, 2015) or on orthopantomographs (OPT) (Indira et al, 2012) or on mandibular images obtained by cone beam computed tomography (CBCT) (Gamba et al, 2016) revealed that osteometric parameters that included ramus height and breadth, coronoid height, mandibular length, bigonial breadth, and bicondylar breadth showed significant Department of Prosthodontics, Faculty of Dentistry, University of Jordan, Amman, Jordan. This work was carried out during a sabbatical year in Florida, USA and was supported by the University of Jordan.…”

Section: Introductionmentioning

confidence: 99%

Osteometric Assessment of Various Mandibular Morphological Traits for Sexual Dimorphism in Jordanians by Discriminant Function Analysis

Amin

2018

Int. J. Morphol.

View full text Add to dashboard Cite

AMIN, W. M.Osteometric assessment of various mandibular morphological traits for sexual dimorphism in Jordanians by discriminant function analysis. Int. J. Morphol., 36(2):642-650, 2018. SUMMARY:The aim of this study was to analyze the sexual dimorphism in the mandibles of Jordanians and derive a population specific equation for sex prediction. The employed sample comprised 270 cone beam computed tomography (CBCT) images of Jordanians (147 males and 123 females) aged 27-55 years. The images were rendered to 3D surface models, using customized software that provided various views for each mandible, on which measurements made of nine parameters (ramus height, right and left coronoids height, mandibular length, gonial angle, Intergonial breadth, Intercondylar breadth, mental and mandibular foramena) for the analysis of sex identification. The collected data sets were treated statistically using the Statistical Package SPSS version-21. Canonical discriminant function analysis was used to specify a parameter or combination of parameters that best separate the two sexes. Stepwise analysis together with leave-one-out classification procedure was applied (utilizing the Wilks lambda method), which identified six parameters that formed the best combination most precisely predicting sex. It also identified the predictors' coefficients from which a predictive equation for the Jordanian population was derived. The discriminant function group centroid discriminant scores for males and females and the sectioning cut-score were also defined. According to the equation, the function score for any set of measurements that is above the cut score is probably for a male individual whereas a score that was below the cut score is probably for a female subject.

show abstract

Mandibular sexual dimorphism analysis in CBCT scans

Cited by 62 publications

References 23 publications

Sex Prediction From Metrical Analysis of Macerated Mandibles of Brazilian Adults

Sex Prediction From Metrical Analysis of Macerated Mandibles of Brazilian Adults

The Morphometry of the Angle of Mandible and its Correlation with Age and Sex in the eThekwini Metropolitan Region: A Panoramic Study

Osteometric Assessment of Various Mandibular Morphological Traits for Sexual Dimorphism in Jordanians by Discriminant Function Analysis

Contact Info

Product

Resources

About