Comparative assessment of maxillary canine index and maxillary first molar dimensions for sex determination in forensic odontology

Phulari, Rashmi G S; Rathore, Rajendrasinh; Talegaon, Trupti Pramod; Jariwala, Prachi

doi:10.4103/jfo.jfds_4_16

Cited by 13 publications

(18 citation statements)

References 16 publications

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“…Overall, several teeth are sexually dimorphic and the crown mesiodistal dimensions were larger on average in males than in females. The results of this study confirm what was previously demonstrated, canine teeth are the most dimorphic teeth [1][2][3][4][5]7,19,21,[24][25][26] but also molars present significant differences between sexes [11,13,23,25,[28][29][30]. Within the elements that fit into our sex prediction model, the upper left canine, the lower right lateral incisor, and the lower right canine were the most appropriate and with better replicability.…”

Section: Discussionsupporting

confidence: 88%

“…Dental crown dimensions can be obtained through intraoral measurements [18], dental forms [4,11,13,14,16,19,24], or human remains [20,21]. The mesiodistal and buccolingual measurements of the crown were the two most commonly used and studied dimensions [1,11,14,[18][19][20][21], followed by diagonal measurements (mesiobuccal-distolingual and distobuccal-mesiolingual) [1,21,25] and the canine mandibular index (expressed as the ratio between the mesiodistal dimension of the canines and the width of the intercanine arch [12,15,19,26]). These studies have shown that canine dimensions provide the highest sexual dimorphism [16,18,21,24,25], followed by premolars [21,25], first and second molars [20,21,25,27].…”

Section: Discussionmentioning

confidence: 99%

“…The mesiodistal width of each tooth was measured at the widest distance between the mesial and distal contact points. The position of the caliper had to be perpendicular to the occlusal surface of the measured tooth [1,11,14,16,[18][19][20][21].…”

Section: Dental Casts Analysis and Measurement Reproducibilitymentioning

confidence: 99%

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Sex Prediction Based on Mesiodistal Width Data in the Portuguese Population

Neves¹,

Antunes‐Ferreira

Machado³

et al. 2020

Applied Sciences

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Accurate sex prediction is a key step in creating a postmortem forensic profile as it excludes approximately half the population. It is our goal to develop a predictive model to establish sex through teeth mesiodistal widths in a Portuguese population. The pretreatment dental casts of 168 of Portuguese orthodontics subjects (59 males and 109 females) were included. Mesiodistal widths from right first molar to left first molar were measured on each pretreatment cast to the nearest 0.01 mm using a digital caliper. Overall, the mesiodistal widths of the upper and lower canines, premolars, and molars were found to be significantly different between females and males. Conversely, no significant differences between sexes were identified for incisors. A multivariate logistic regression model for sex prediction was developed and the teeth included in the final reduced model being the upper left canine (2.3), the lower right lateral incisor (4.2) and the lower right canine (4.3). There is a prevalence of sexual dimorphism in all teeth except the incisors. The canines present the most noticeable difference between sexes. The presented sex determination predictive model exhibits an overall correct classification of 75%, outperforming all available models for this purpose and therefore is a potential tool for forensic analysis in this population.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

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Sex Prediction Based on Mesiodistal Width Data in the Portuguese Population

Neves¹,

Antunes‐Ferreira

Machado³

et al. 2020

Applied Sciences

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“…It should be noted that there is also an MCI using the same measurements except in the upper dentition (Bakkannavar et al, 2015;Nuhu et al, 2019;Otuagn et al, 2019;Phulari et al, 2017;Rani, 2017). In previous studies, it was found that the Maxillary Index results were not as significant as the Mandibular Index ones and thus not as accurate at assessing sex within the Indian populations (Nuhu et al, 2019;Otuagna et al, 2019).…”

mentioning

confidence: 94%

“…In previous studies, it was found that the Maxillary Index results were not as significant as the Mandibular Index ones and thus not as accurate at assessing sex within the Indian populations (Nuhu et al, 2019;Otuagna et al, 2019). Other studies found that the Maxillary Canine Index was not significant at all and should not be used as a sexing method (Bakkannavar et al, 2015;Phulari et al, 2017). Due to these limitations, the Maxillary Canine Index was not assessed for this study.…”

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confidence: 98%

A Validation Study of the Mandibular Canine Index Method of Sexual Assessment Using Two Decedent American Populations

Coberly

2020

NFJA

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Rao and colleagues created the Mandibular Canine Index (MCI) as a method of sex assessment. It has primarily been used on living South Asian populations. This study applies the Index to two decedent American populations in hopes that it will applicable to the field of Forensic Anthropology. Forty-five individuals from the C.A. Pound Human Identification Lab and the Wichita State Biological Anthropology Lab with full mandibular dentition were studied. The mesio-distal width of both right and left canines and the canine arch width were taken and the MCI calculated along with the standard MCI. Results show that the MCI is not statistically significant in determining males from females (p=.461 for right and p=.473 for left). The standard MCI was .242 for the right and .246 for the left. This gave an accuracy of 37% to 44% for males and 44% to 45% for females. The mesio-distal length (p = .002 for right and .001 for left) and canine arch width (p=.019) on their own were statistically significant and can be used in sex assessment if the teeth are present although they should be used with other methods. Further study should be done with a larger sample size to see if results are consistent.

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Age‐related radiomorphometric changes on panoramic radiographs

Lee

Auh

Chun

et al. 2020

Clinical & Exp Dental Res

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Objectives: We aimed to analyse age-related anatomical changes in teeth and mandibular structures using panoramic radiographs.Materials and Methods: We included 471 subjects aged 13-70 years (mean, 35.12 ± 18.72 years). Panoramic radiographs were used to record intraoral condition and radiomorphometric parameters. After grouping the subjects by age decade, descriptive statistics and analysis of variance were performed to assess age-related patterns.Results: The number of missing teeth, endodontically treated teeth, full veneer crowns, and implant prosthesis increased with age (all p < .05). The prevalence of periodontitis significantly increased after the 40s and was the highest in the 60s (57.1%). The maxillary canine root was the longest in the 10s and 20s (p < .001). With age, the mandibular canal and mental foramen moved towards the alveolar bone crest, on the opposite side of the mandibular inferior border. The pulp area and pulpto-tooth ratio of maxillary/mandibular first molars were significantly higher in the 10s and 20s than in other age groups (all p < .05). Conclusions:We provided comprehensive information on age-related anatomical changes in teeth and mandibular structures based on panoramic radiographs. Various radiographic parameters showed specific changes with increasing age. Assessing these age-related changes can be useful in determining an individual's age, and may aid in medico-legal and forensic judgments.age estimation, first molar, mandibular canal, mental foramen, panoramic radiograph, pulp-totooth ratio | INTRODUCTIONIn forensics, estimating the age of living or dead individuals has become increasingly important, for reasons such as legal queries regarding immigration or refugee status, adoption, criminal offences, employment, and age verification (Juneja, Devi, Rakesh, & Juneja, 2014;Mathew et al., 2013). Methods for forensic analysis include radiographic evaluation of teeth to assess mineralisation, crown formation, eruption, root growth, and apical maturation (Ilayaraja et al., 2018;Mohammed et al., 2014). However, there is no consensus on the method for estimating age after the completion of permanent dentition. Furthermore, age estimation by radiographic methods in adults is not sufficiently accurate (Solheim, 1993).

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Comparative assessment of maxillary canine index and maxillary first molar dimensions for sex determination in forensic odontology

Cited by 13 publications

References 16 publications

Sex Prediction Based on Mesiodistal Width Data in the Portuguese Population

Sex Prediction Based on Mesiodistal Width Data in the Portuguese Population

A Validation Study of the Mandibular Canine Index Method of Sexual Assessment Using Two Decedent American Populations

Age‐related radiomorphometric changes on panoramic radiographs

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