Radiographic evaluation of mandibular ramus for gender estimation: Retrospective study

Damera, Ajit; Mohanalakhsmi, Jonnala; Yellarthi, Pavan Kumar; Rezwana, Begum Mohammed

doi:10.4103/0975-1475.186369

Cited by 44 publications

(83 citation statements)

References 10 publications

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“…The main issue in forensic anthropology is human identification, most often of human remains [1]. Sex deter-mination is the first step of personal identification in the field of forensics and is essential for reconstructive profiling.…”

Section: Introductionmentioning

confidence: 99%

“…Age, sex, race, and occlusion status affect the morphological characteristics of the mandible. Studies have shown that remodeling of the mandibular bone occurs with aging [1].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, studies have been conducted on the ability of radiographic images to determine sex in different societies [1,11,12]. Considering the importance of the subject and the lack of research in the Iranian population, this study aimed to assess sexual dimorphism with mandibular parameters such as including the ramus height, the coronoid height, the mental height, the mandible body height, by using panoramic radiographs in Rasht-Iran population.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Sexual Dimorphism with Mandibular Parameters by Digital Panoramic Radiography

Rad¹,

Javanshir²,

Nemati³

et al. 2020

TODENTJ

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Introduction: Sex determination is the first step of personal identification in the field of forensics and is essential for reconstructive profiling. The skull appears to be the most reliable part of the skeleton, apart from the pelvis, in sex determination. Tooth and bone are used as a key tool for personal identification due to their high resistance to decomposition and degradation. The present study aimed to evaluate the sexual dimorphism with mandibular parameters by digital panoramic radiography. Materials and Methods: In this analytical-descriptive study, the mandibular parameters in 315 females and 217 males, including the ramus height, the coronoid height, the mental height, the mandible body height, the minimum width of the ramus, the distance between the right and left gonial angle, the distance between the right and left condyle and the distance between the right and left coronoid, were measured in the panoramic radiography via SCANORA software. Discriminant function and canonical regression methods were used to determine the predictability of mandibular parameters in sexual dimorphism. P < 0.05 was considered to be statistically significant. Results: All parameters were statistically significant between genders (P<0.05). The mean of all parameters, except the gonial angle, in males, was higher than that of the female. Percentage of correctly classified in discriminant function based on the central and right side and left side dimorphic parameters of the mandible is 82.5% and 82.9%, respectively. Conclusion: According to the present study, panoramic radiography can be considered as a valuable tool in sex determination (with an accuracy of 82.5%), and all parameters of mandible had sexual dimorphism and showed that they are reliable parameters with a total accuracy of 82.5% in the sexual dimorphism.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Age, sex, race, and occlusion status affect the morphological characteristics of the mandible. Studies have shown that remodeling of the mandibular bone occurs with aging [1].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of Sexual Dimorphism with Mandibular Parameters by Digital Panoramic Radiography

Rad¹,

Javanshir²,

Nemati³

et al. 2020

TODENTJ

View full text Add to dashboard Cite

show abstract

“…Morphological characteristics of the mandible show differences in age, sex, dental status, and race [8]. Various skeletal morphological features can be used for sex determination.…”

Section: Introductionmentioning

confidence: 99%

“…Sex identification in bone remnants is important in forensic practice and forensic anthropology. The skull is the most dimorphic portion of skeleton, providing, after the pelvis, an accuracy of up to 92% [1,8]. The GA can be used as a tool in forensic odontology [31].…”

Section: Introductionmentioning

confidence: 99%

Comparison of cone-beam computed tomography and panoramic radiography for mandibular morphometry

Taşsöker¹,

Akin²,

Kabakçı³

et al. 2019

Folia Morphol

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Background: The aim of this study was to compare the morphological differences in the mandible between patients with six age groups and to detect the correlation between these parameters on panoramic radiography (PR) and cone-beam computed tomography (CBCT). Materials and methods: A total of 121 subjects (50 males and 71 females) were included in the study and were divided into six age groups (10-19, 20-29, 30-39, 40-49, 50-59, and 60-69) on the basis of the chronological age. CBCT and PR methods were used to record the mandibular measurements for the same 121 patients. Differences between male and female mandibular morphometric measurements, between right and left side measurements, and differences in age subgroups compared by using independent samples t-test, paired samples t-test, and one-way ANOVA test, respectively. P < 0.05 value was considered statistically significant for all analysis. Results: Males mostly have higher mandibular measurement values. There were statistically significant differences between CBCT and PR measurements (p < 0.05). PR mostly showed higher values than CBCT measurements. Conclusions: Based on the fact that PRs showing significant differences from CBCT in the morphometric measurements made on mandible, it is recommended that forensic doctors and anthropologists consider this information in their age and gender prediction studies.

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Quantifying the potential of morphological parameters for human dental identification: part 3—selecting the strongest skeletal identifiers in the mandible

et al. 2022

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The current study aimed to select the best mandibular morphological identifiers.One hundred eighty-five panoramic radiographs were retrospectively collected, in which four landmarks were located on the mandible: the most superior point of the condyle right/left (CONR/L), of the coronoid right/left (CORR/L), of the mandibular lingula right/left (LINR/L), and the most mesial point of the mental foramen right/left (MMFR/L). Five linear measurements, 6 angles and 10 ratios were measured bilaterally. Three groups of statistics were considered: (1) mean potential set; (2) inter-observer agreement quantified by intra-class correlation (ICC) and within-subject coefficient of variation (WSCV); (3) Spearman correlation. Parameters were selected for a step-by-step cascade.In a univariate approach, the following parameters proved to have the best identifying capacity: ratio 3 right (between lines CONR -CORR and LINR -MMFR) with mean potential set 13%, ICC 0.90, WSCV 4.8%; ratio 4 (between lines CONR/L -CORR/L and MMFR -MMFL) with mean potential set 13%, ICC 0.92, WSCV 8.9%; and angle 4 left (between landmarks LINL, MMFL and MMFR) with mean potential set of 18%, ICC 0.91, WSCV 1.2%. The correlation coefficients ranged from 0.01 to 0.33. In a multivariate approach, the identifying capacity improved drastically, with all ratios combined as the strongest identifier (mean potential set 1.29%).In conclusion, a single ratio or a single angle already narrows down the set of potential matches, but the mean potential set remains relatively large. Combining all ratios drastically increases the certainty of the match.

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Radiographic evaluation of mandibular ramus for gender estimation: Retrospective study

Cited by 44 publications

References 10 publications

Evaluation of Sexual Dimorphism with Mandibular Parameters by Digital Panoramic Radiography

Evaluation of Sexual Dimorphism with Mandibular Parameters by Digital Panoramic Radiography

Comparison of cone-beam computed tomography and panoramic radiography for mandibular morphometry

Quantifying the potential of morphological parameters for human dental identification: part 3—selecting the strongest skeletal identifiers in the mandible

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