Volumetric assessment of canines using post-mortem computed tomography (PMCT) for sexual dimorphism in a Malaysian population
Abstract Background Recent research has explored volumetric assessment in three-dimensional (3D) imaging procedures for sexual dimorphism. The 3D techniques have enabled a more realistic, accurate, and non-invasive visualization of sex-related anatomical parameters, such as the size and shape of hum...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-03-01
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| Series: | Egyptian Journal of Forensic Sciences |
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| Online Access: | https://doi.org/10.1186/s41935-023-00339-0 |
| _version_ | 1797863678726373376 |
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| author | Mohd Hafizal Harudin Ademir Franco Norhayati Jaffar Mohamad Helmee Mohamad Noor Mohamad Azaini Ibrahim Scheila Manica |
| author_facet | Mohd Hafizal Harudin Ademir Franco Norhayati Jaffar Mohamad Helmee Mohamad Noor Mohamad Azaini Ibrahim Scheila Manica |
| author_sort | Mohd Hafizal Harudin |
| collection | DOAJ |
| description | Abstract Background Recent research has explored volumetric assessment in three-dimensional (3D) imaging procedures for sexual dimorphism. The 3D techniques have enabled a more realistic, accurate, and non-invasive visualization of sex-related anatomical parameters, such as the size and shape of human teeth. Aim To perform sexual dimorphism based on dental tissue volumes of permanent left maxillary and mandibular canines in a Malaysian population. Methods A cross-sectional study was carried out on 220 post-mortem computed tomography (PMCT) scans of Malaysian subjects (114 males and 106 females) aged between 18 and 40 years old. The permanent left maxillary and mandibular canines were analysed based on the volume of their (I) enamel cap, (II) coronal dentine, and (III) root, as well as the combination between the three dental tissue volumes (DTV). 3D Slicer version 4.10.2 computer software was used to perform a semi-automated segmentation of the anatomic regions of interest of each tooth. Results The DTV of the permanent left maxillary and mandibular canines showed sexual dimorphism as the males presented larger DTV than females (p < 0.05). After binary logistic regression, the DTV revealed an overall sex classification rate of 60 to 74.1%. The DTV of the permanent left mandibular canine had more discriminant power to correctly classify males and females compared to the left maxillary canine. Conclusions The volumetric assessment of the dental tissues of the permanent left maxillary and mandibular canines could discriminate sex in the Malaysian population. Given the limited classification rate, this approach could act solely as a supplementary tool to existing sex estimation methods. |
| first_indexed | 2024-04-09T22:39:22Z |
| format | Article |
| id | doaj.art-6fb6865266c544db9a6e50adedb06249 |
| institution | Directory Open Access Journal |
| issn | 2090-5939 |
| language | English |
| last_indexed | 2024-04-09T22:39:22Z |
| publishDate | 2023-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Egyptian Journal of Forensic Sciences |
| spelling | doaj.art-6fb6865266c544db9a6e50adedb062492023-03-22T12:15:00ZengSpringerOpenEgyptian Journal of Forensic Sciences2090-59392023-03-011311810.1186/s41935-023-00339-0Volumetric assessment of canines using post-mortem computed tomography (PMCT) for sexual dimorphism in a Malaysian populationMohd Hafizal Harudin0Ademir Franco1Norhayati Jaffar2Mohamad Helmee Mohamad Noor3Mohamad Azaini Ibrahim4Scheila Manica5Unit of Forensic Odontology, Department of Oral and Maxillofacial Surgery, Kuala Lumpur Hospital, Ministry of Health MalaysiaCentre of Forensic and Legal Medicine and Dentistry, University of DundeeUnit of Forensic Odontology, Department of Oral and Maxillofacial Surgery, Kuala Lumpur Hospital, Ministry of Health MalaysiaUnit of Forensic Radiology, Department of Radiology, Kuala Lumpur Hospital, Ministry of Health MalaysiaDepartment of Forensic Medicine, National Forensic Institute of Malaysia (NFIM), Kuala Lumpur Hospital, Ministry of Health MalaysiaCentre of Forensic and Legal Medicine and Dentistry, University of DundeeAbstract Background Recent research has explored volumetric assessment in three-dimensional (3D) imaging procedures for sexual dimorphism. The 3D techniques have enabled a more realistic, accurate, and non-invasive visualization of sex-related anatomical parameters, such as the size and shape of human teeth. Aim To perform sexual dimorphism based on dental tissue volumes of permanent left maxillary and mandibular canines in a Malaysian population. Methods A cross-sectional study was carried out on 220 post-mortem computed tomography (PMCT) scans of Malaysian subjects (114 males and 106 females) aged between 18 and 40 years old. The permanent left maxillary and mandibular canines were analysed based on the volume of their (I) enamel cap, (II) coronal dentine, and (III) root, as well as the combination between the three dental tissue volumes (DTV). 3D Slicer version 4.10.2 computer software was used to perform a semi-automated segmentation of the anatomic regions of interest of each tooth. Results The DTV of the permanent left maxillary and mandibular canines showed sexual dimorphism as the males presented larger DTV than females (p < 0.05). After binary logistic regression, the DTV revealed an overall sex classification rate of 60 to 74.1%. The DTV of the permanent left mandibular canine had more discriminant power to correctly classify males and females compared to the left maxillary canine. Conclusions The volumetric assessment of the dental tissues of the permanent left maxillary and mandibular canines could discriminate sex in the Malaysian population. Given the limited classification rate, this approach could act solely as a supplementary tool to existing sex estimation methods.https://doi.org/10.1186/s41935-023-00339-0Forensic dentistrySexual dimorphismSex estimationPost-mortem computed tomography |
| spellingShingle | Mohd Hafizal Harudin Ademir Franco Norhayati Jaffar Mohamad Helmee Mohamad Noor Mohamad Azaini Ibrahim Scheila Manica Volumetric assessment of canines using post-mortem computed tomography (PMCT) for sexual dimorphism in a Malaysian population Egyptian Journal of Forensic Sciences Forensic dentistry Sexual dimorphism Sex estimation Post-mortem computed tomography |
| title | Volumetric assessment of canines using post-mortem computed tomography (PMCT) for sexual dimorphism in a Malaysian population |
| title_full | Volumetric assessment of canines using post-mortem computed tomography (PMCT) for sexual dimorphism in a Malaysian population |
| title_fullStr | Volumetric assessment of canines using post-mortem computed tomography (PMCT) for sexual dimorphism in a Malaysian population |
| title_full_unstemmed | Volumetric assessment of canines using post-mortem computed tomography (PMCT) for sexual dimorphism in a Malaysian population |
| title_short | Volumetric assessment of canines using post-mortem computed tomography (PMCT) for sexual dimorphism in a Malaysian population |
| title_sort | volumetric assessment of canines using post mortem computed tomography pmct for sexual dimorphism in a malaysian population |
| topic | Forensic dentistry Sexual dimorphism Sex estimation Post-mortem computed tomography |
| url | https://doi.org/10.1186/s41935-023-00339-0 |
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