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      Buccolingual root dimension of permanente mandibular canines as a complementary estimator of sex: a pilot study Translated title: Dimensão bucolingual da raiz dos caninos mandibulares permanentes como um estimador complementar do sexo: um estudo piloto


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          Abstract Objective: To evaluate the potential of the buccolingual dimension of the permanent mandibular canine roots as a sex estimator, using midsagittal cone-beam computed tomography images. Methods: In this retrospective study, 58 Portuguese patients (27 female and 31 male) aged 18-60 years were assessed. The maximum buccolingual dimension of the cervical root was measured in the midsagittal plane through cone-beam computed tomography images. The Bland-Altman method was applied for the reliability analysis, and a receiver operating characteristics (ROC) curve was obtained for accuracy analysis. Results: The buccolingual root dimension on the mandibular canine showed statistically significant differences between sexes (t56 df = 4.871; p<0.0005). The optimal cut-off to differentiate males from females was 6.64 mm. The area under the curve (AUC) was 83.5% (p<0.0005). An overall accuracy of 79% was obtained. The percentage of males correctly estimated was 77.4%, compared to 81.5% of females. Conclusions: Our data suggest that canines’ buccolingual root dimension can serve as a complementary tool for sex estimation in a forensic context.

          Translated abstract

          Resumo Objetivo: Avaliar o potencial da dimensão buco-lingual das raízes permanentes de caninos mandibulares para a diagnose sexual, utilizando imagens sagitais de tomografia computadorizada de feixe cónico (CBCT). Métodos: Neste estudo retrospetivo, foram avaliados 58 pacientes portugueses (27 mulheres e 31 homens) com idades entre 18 e 60 anos. A dimensão buco-lingual máxima da parte cervical da raiz foi medida no plano sagital mediano, por meio de imagens de tomografia computadorizada de feixe cónico. O método de Bland-Altman foi aplicado para a análise de confiabilidade, e obtida uma curva receiver operating characteristics (ROC) para a análise de precisão. Resultados: A dimensão buco-lingual da raiz do canino mandibular apresenta diferenças estatisticamente significativas entre os sexos (t56 df = 4,871; p<0,0005). O ponto de corte ideal para diferenciar entre sexos foi de 6,64 mm. A área sob a curva (AUC) foi de 83,5% (p<0,0005). Foi obtida uma precisão geral de 79%. O percentual de homens corretamente estimado foi de 77,4%, sendo o valor nas mulheres de 81,5%. Conclusões: Nossos dados sugerem que a dimensão buco-lingual da raiz canina pode contribuir como uma ferramenta complementar para a estimativa do sexo em um contexto forense.

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          Most cited references32

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          Clinical applications of cone-beam computed tomography in dental practice.

          Cone-beam computed tomography (CBCT) systems have been designed for imaging hard tissues of the maxillofacial region. CBCT is capable of providing sub-millimetre resolution in images of high diagnostic quality, with short scanning times (10-70 seconds) and radiation dosages reportedly up to 15 times lower than those of conventional CT scans. Increasing availability of this technology provides the dental clinician with an imaging modality capable of providing a 3-dimensional representation of the maxillofacial skeleton with minimal distortion. This article provides an overview of currently available maxillofacial CBCT systems and reviews the specific application of various CBCT display modes to clinical dental practice.
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            A review of sex estimation techniques during examination of skeletal remains in forensic anthropology casework

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              Mandibular canine index--a clue for establishing sex identity.

              A preliminary study for establishing sex identity by Mandibular Canine Index is described. Seven hundred and sixty six individuals from a South Indian population of either sex, ranging in age from 15 to 21 years, with fully errupted, healthy and non-worn mandibular permanent canines were studied. The data collected was analysed statistically. Accurancy of sex determination identity was found to be 84.3% in the male and 87.5% in the female. The method is simple and inexpensive to conduct and therefore can be applied in Forensic Odontology, as a method for establishing sex identity.

                Author and article information

                Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial
                Rev Port Estomatol Med Dent Cir Maxilofac
                Sociedade Portuguesa de Estomatologia e Medicina Dentária (Lisboa, , Portugal )
                December 2021
                : 62
                : 4
                : 217-222
                [2] orgnameInstituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde orgdiv1CESPU
                [3] Porto orgnameUniversidade do Porto orgdiv1Faculdade de Medicina Dentária Portugal
                [1] orgnameErasmus University College Brussels orgdiv1Design & Technology orgdiv2Department of Healthcare
                [4] Porto orgnameUniversidade do Porto orgdiv1Instituto de Saúde Pública orgdiv2EPIUnit Portugal
                [5] orgnameUniversity Institute of Health Sciences orgdiv1TOXRUN - Toxicology Research Unit Portugal
                S1646-28902021000400217 S1646-2890(21)06200400217

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                : 06 May 2021
                : 27 November 2021
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 33, Pages: 6

                SciELO Portugal

                Original Research

                Tomografia computorizada de feixe cónico,Antropologia forense,Odontologia forense,Identificação humana,Odontometria,Cone-beam computed tomography,Forensic anthropology,Forensic dentistry,Human identification,Odontometry


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