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Auderset FC, Connert T, Meller C, Filippi A, Dagassan-Berndt DC. Evaluation of five methods to identify composite restorations in human teeth on a forensic purpose-an ex vivo comparative study. Int J Legal Med 2024; 138:85-96. [PMID: 35945461 PMCID: PMC10772003 DOI: 10.1007/s00414-022-02869-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/14/2022] [Indexed: 10/15/2022]
Abstract
The use of tooth-colored composite resin materials in dentistry is increasing. As composite restorations appear similar to the natural tooth structure, their detection is becoming more challenging. The aim of this study was to compare five diagnostic methods for detection of dental restorations and to create reliable postmortem dental records for forensic purposes. A conventional examination method without a direct light source (CONV), with a dental loupe light (DL), Galilean loupes with a direct light source (GDL), a fluorescence-inducing device (FIT), and intraoral radiographs (RX) were compared. Dentists specializing in conservative dentistry or oral surgery and dentistry students participated. Regarding sensitivity, specificity, positive predictive value, and negative predictive value, FIT and RX showed significantly higher results than CONV, DL, and GDL. RX and FIT showed comparable results in identifying composite restorations but depending on their location. The combination of both methods may lead to even better results. In conclusion fluorescence-inducing devices show good results in identifying composite restorations and therefore should be considered as a standard tool in forensic examinations. Another advantage is their small size, low cost, and mobility. Good illumination and magnification devices are recommended to enhance performance during conventional examinations. Involving dentists specialized in conservative dentistry could contribute to dental identification.
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Affiliation(s)
- Florence C Auderset
- Department of Oral Surgery, University Center for Dental Medicine Basel UZB, University of Basel, Basel, Switzerland
| | - Thomas Connert
- Department of Periodontology, Endodontology and Cariology, University Center for Dental Medicine UZB, University of Basel, Basel, Switzerland
| | - Christian Meller
- Department of Restorative Dentistry, Periodontology, Endodontology and Pediatric Dentistry, School of Dental Medicine, Eberhard-Karls University of Tübingen, Tübingen, Germany
| | - Andreas Filippi
- Department of Oral Surgery, University Center for Dental Medicine Basel UZB, University of Basel, Basel, Switzerland
| | - Dorothea C Dagassan-Berndt
- Center for Dental Imaging, University Center for Dental Medicine Basel UZB, University of Basel, Basel, Switzerland.
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2
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Brooke N, Elliott J, Murphy T, Vera Stimpson L. Development of a radiographic technique for porcine head ballistic research. Radiography (Lond) 2023; 29:980-983. [PMID: 37595528 DOI: 10.1016/j.radi.2023.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/20/2023]
Abstract
INTRODUCTION The porcine model shows structural features comparable to that of humans and are routinely used within research, due to the ethical, legal, and practical use of post-mortem human samples. Methods for obtaining high quality and comparable reference data using standardised acquisition protocols are essential. METHODS The decapitated heads of three adult white sows were subjected to radiographic imaging before and after cranial trauma (9 mm, Heckler and Koch MP5). Digital radiographs were generated using a Siemens MULTIX TOP system with an Agfa digital detector, with foam blocks and sandbags as ancillary equipment. An iterative approach was adopted by the authors to generate reproducible radiographic views from two perpendicular angles. Specimens were kept at 5 °C and wrapped in polythene bags to reduce the impact of putrefaction. RESULTS Standardised head radiography technique was developed for superior-inferior and lateral views demonstrating porcine anatomy. Key parameters included: automatic exposure control for tube current (∼4 mAs), tube voltage of 73 kVp, 100 cm source to image receptor distance, and an anti-scatter grid. Slight variances in specimen morphology, developmental status, and soft tissue changes did not affect imaging outcomes. CONCLUSION The technique and positioning proposed in this study allows for the acquisition of high quality and reproducible radiographic images for comparable ballistic research datasets. Specimen positioning and centring of the primary beam may be applied across porcine breeds, although individual radiographic parameters may differ according to equipment specifications and specimen size. IMPLICATIONS FOR PRACTICE Development of a reproducible radiographic technique of porcine heads in forensic and veterinary research.
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Affiliation(s)
- N Brooke
- School of Law, Policing and Social Sciences, Canterbury Christ Church University, Kent, United Kingdom
| | - J Elliott
- School of Allied and Public Health Professions, Canterbury Christ Church University, Kent, United Kingdom
| | - T Murphy
- Kent Police Tactical Firearms Unit, Kent, United Kingdom
| | - L Vera Stimpson
- School of Law, Policing and Social Sciences, Canterbury Christ Church University, Kent, United Kingdom.
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3
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Enomoto A, Lee AD, Sukedai M, Shimoide T, Katada R, Sugimoto K, Matsumoto H. Automatic identification of individuals using deep learning method on panoramic radiographs. J Dent Sci 2022; 18:696-701. [PMID: 37021248 PMCID: PMC10068681 DOI: 10.1016/j.jds.2022.10.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 10/18/2022] [Indexed: 11/21/2022] Open
Abstract
Abstract Background/purpose The dentition shows individual characteristics and dental structures are stable with respect to postmortem decomposition, allowing the dentition to be used as an effective tool in forensic dentistry. We developed an automatic identification system using panoramic radiographs (PRs) with a deep learning method. Materials and methods In total, 4966 PRs from 1663 individuals with various changes in image characteristics due to various dental treatments were collected. In total, 3303 images were included in the data set used for model training. Vgg16, Vgg19, ResNet50, ResNet101, and EfficientNet models were applied for identification. The precision curves were evaluated. Results The matching precision rates of all models (Vgg16, Vgg19, ResNet50, ResNet101, and EfficientNet) were examined. Vgg16 was the best model, with a precision of around 80-90% on 200 epochs, using the Top-N metrics concept with 5-15 candidate labels. The model can successfully identify the individual even with low quantities of dental features in 5-10 s. Conclusion This identification system with PRs using a deep learning method appears useful. This identification system could prove useful not only for unidentified bodies, but also for unidentified wandering elderly people. This project will be beneficial for police departments and government offices and support disaster responses.
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Affiliation(s)
- Akifumi Enomoto
- Department of Oral and Maxillofacial Surgery, Kindai University, Faculty of Medicine, Osaka-Sayama, Osaka, Japan
- Corresponding author.
| | - Atsushi-Doksa Lee
- Department of Oral and Maxillofacial Surgery, Kindai University, Faculty of Medicine, Osaka-Sayama, Osaka, Japan
| | - Miho Sukedai
- Department of Oral and Maxillofacial Surgery, Kindai University, Faculty of Medicine, Osaka-Sayama, Osaka, Japan
| | - Takeshi Shimoide
- Department of Oral and Maxillofacial Surgery, Kindai University, Faculty of Medicine, Osaka-Sayama, Osaka, Japan
| | - Ryuichi Katada
- Department of Legal Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Kana Sugimoto
- Department of Legal Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Hiroshi Matsumoto
- Department of Legal Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
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Chiam SL, Dror IE, Huber CD, Higgins D. The biasing impact of irrelevant contextual information on forensic odontology radiograph matching decisions. Forensic Sci Int 2021; 327:110997. [PMID: 34536753 DOI: 10.1016/j.forsciint.2021.110997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 09/03/2021] [Accepted: 09/07/2021] [Indexed: 11/26/2022]
Abstract
The potential biasing effect of irrelevant context information on the forensic odontology method of radiograph-based identification has never been empirically investigated despite being a recognized problem in other forensic science disciplines. This study examines the effect of irrelevant context information on the probability judgment of match (JOM) of practicing forensic odontologist and dentist participants who were asked to match pairs of dental radiographs supplemented with irrelevant case information. The irrelevant case information contained domain task-irrelevant context information which varied in strength (strong or weak). It suggested either supportive or contradictory bias relative to the actual match status of the radiograph pairs. The dental radiographs consisted of verified match and non-match radiographs pairs sampled and de-identified from actual forensic cases. Changes in accuracy and JOM between supportive and contradictory contexts conditions revealed a contextual bias. Mixed model analysis showed that strong supportive context increased the odds ratio of correct decisions by a factor of 2.4 [1.23, 4.46]; p = 0.0097. Consistent with the biasing effect, the JOM score differences between strong supportive and contradictory irrelevant context information were 1.03 and 0.43 respectively for the non-match and match decisions. The direction of context suggestion (p = 0.0067), the radiograph match status (p = 0.014), and their interactions (p = 0.0061), were all found to impact the participants' decision. The weak context information was not strong enough to have a significant effect on accuracy or JOM scores. This study demonstrates that radiograph match judgment is affected and can be biased by strong irrelevant contextual information.
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Affiliation(s)
- Sher-Lin Chiam
- Forensic Odontology Unit/Adelaide Dental School, The University of Adelaide, Australia.
| | - Itiel E Dror
- Center for the Forensic Sciences, University College London, UK.
| | - Christian D Huber
- Department of Biology, The Pennsylvania State University, University Park, 16802 PA, USA.
| | - Denice Higgins
- Forensic Odontology Unit/Adelaide Dental School, The University of Adelaide, Australia.
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Al-Dawoody A, Winter KA, Finegan O. International Committee of the Red Cross (ICRC): Management of the dead under Islamic law. FORENSIC SCIENCE INTERNATIONAL: REPORTS 2021. [DOI: 10.1016/j.fsir.2021.100196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Storer CA, Berketa J, Higgins D. Dental identification practices across Australia. AUST J FORENSIC SCI 2021. [DOI: 10.1080/00450618.2021.1913226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | - John Berketa
- Forensic Odontology Unit, University of Adelaide, Adelaide, Australia
| | - Denice Higgins
- Forensic Odontology Unit, University of Adelaide, Adelaide, Australia
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Du H, Li M, Li G, Lyu T, Tian XM. Specific oral and maxillofacial identifiers in panoramic radiographs used for human identification. J Forensic Sci 2021; 66:910-918. [PMID: 33506528 DOI: 10.1111/1556-4029.14673] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/27/2020] [Accepted: 01/06/2021] [Indexed: 11/28/2022]
Abstract
Radiographically assisted dental identification is an important means for individual identification. Specific identifiers help to quickly filter some of the possible corresponding AM and PM images at the beginning. The study seeks specific oral and maxillofacial identifiers in panoramic radiographs. A total of 920 panoramic radiographs from 460 live patients were used. The most recent radiograph served as the surrogate post-mortem (PM) record of an unidentified person, and the earliest radiograph served as the ante-mortem (AM) record of the same person. We evaluated the following four groups of identifiers of the images: (1) dental morphology, tooth number, and position; (2) dental treatment and pathology; (3) morphological identifiers of the jaw; and (4) pathological identifiers of the jaw. The ratio of each identifier being identified simultaneously in the AM and PM databases was determined. Specific identifiers were defined as those that appeared at low frequency (ratio: 0%-0.250%). A total of 18 specific oral and maxillofacial identifiers were determined. The specific identifiers were a retained deciduous tooth (0.011%), S-shaped deflection of a tooth root (0.012%), distal deflection of tooth root (0.017%), inverted impaction (0.018%), malposition (0.038%), supernumerary teeth (0.061%), mesial deflection of tooth root (0.092%), microdontia (0.136%), buccal/lingual impaction (0.188%), cementoma (0.002%), hypercementosis (0.002%), continuous crown (0.004%), pulp calcification (0.023%), attrition (0.030%), residual root (0.106%), root resorption (0.137%), implant (0.156%), and osteomyelitis (0.002%). Identifiers of the teeth and jaw can be used for human identification, and dental identifiers are more specific than identifiers of jaw.
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Affiliation(s)
- Han Du
- Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Min Li
- Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Gang Li
- Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Tu Lyu
- Institute of Forensic Science, Ministry of Public Security, Beijing, China
| | - Xue-Mei Tian
- Institute of Forensic Science, Ministry of Public Security, Beijing, China
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8
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Jethi N, Arora KS. Forensic endodontics and national identity programs in India. Indian J Dent Res 2020; 31:662-665. [PMID: 33107475 DOI: 10.4103/ijdr.ijdr_187_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
National identity programs like Aadhaar in India can play an unique role in identification of an individual and has numerous beneficial applications for the government and the citizens. The biometric records of finger prints and iris provided in the database can be useful for the forensic purpose. In unfortunate incidence of disasters, accidents, and criminal cases such as severe burnings, the identification of the victims is possible through dental profiling where fingerprint matching is not possible. Endodontic treatment includes the radiography for diagnosis of the lesion, during working length determination, obturation, and various other procedures. The variations in tooth anatomy and morphology, post-endo restorations, root canal fillings, and sometimes, endodontic mishaps are recorded in these radiographs. This record can play an important role in identification of a person in case of unfortunate happenings. So, it is suggested to include dental profiling in National Identification programs, and the purpose of this article is to highlight the role of root canal procedures in dental profiling.
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Affiliation(s)
- Navdeep Jethi
- Department of Conservative Dentistry and Endodontics, Daswani Dental College and Research Centre, Kota, Rajasthan, India
| | - Karandeep Singh Arora
- Department of Oral Medicine and Radiology, Bhojia Dental College and Hospital, Baddi, Himachal Pradesh, India
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Iwawaki A, Otaka Y, Asami R, Ishii T, Kito S, Tamatsu Y, Aboshi H, Saka H. Comparison of air dose and operator exposure from portable X-ray units. Leg Med (Tokyo) 2020; 47:101787. [PMID: 32992157 DOI: 10.1016/j.legalmed.2020.101787] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/29/2020] [Accepted: 09/06/2020] [Indexed: 10/23/2022]
Abstract
This study was aimed at investigating and comparing exposure dose of workers and the surrounding workers. In addition, worker's exposure was also measure about lens and finger. Four intraoral portable X-ray units were evaluated. The stray radiations were measured using Pitman 37D and ionization chamber (Pitman). MyDosemini (ALOKA) was used for measurement of the finger exposure dose. Without the shield became high in anterior 0.5 m. Comparing the air dose for the four models used in this study showed a high tendency for the two NOMAD models. And using the shields, the images could be taken 4.6 times of the baseline at a maximum and 3.6 times on average. The finger radiation exposure dose was low with both of the NOMAD models, with no significant difference found. By setting the baseline value without a shield, finger radiation exposure when using a shield was lower than the detection limit for the D3000, and was reduced by approximately 94-96% for other three models. All models can photograph around 100 bodies, so it is considered that it is not necessary to switch out the operator considering the operation limit. But even if it does not reach the operation limit, the stochastic effects of radiation exposure can be increased as well as the deterministic effects of the operation limit. The operator and the surrounding workers seek to protect themselves. It is important to perform exposure management that takes into account the stochastic effects to the operator and the surrounding workers.
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Affiliation(s)
- Atsushi Iwawaki
- Division of Forensic Odontology, Department of Diagnostic & Therapeutic Sciences, Meikai University School of Dentistry, Saitama, Japan.
| | - Yusei Otaka
- Division of Dental Radiology, Department of Diagnostic & Therapeutic Sciences, Meikai University School of Dentistry, Saitama, Japan
| | - Ruri Asami
- Division of Oral Anatomy, Department of Human Development and Fostering, Meikai University School of Dentistry, Saitama, Japan
| | - Takeru Ishii
- Division of Forensic Odontology, Department of Diagnostic & Therapeutic Sciences, Meikai University School of Dentistry, Saitama, Japan
| | - Shinji Kito
- Division of Dental Radiology, Department of Diagnostic & Therapeutic Sciences, Meikai University School of Dentistry, Saitama, Japan
| | - Yuichi Tamatsu
- Department of Gross Anatomy and Forensic Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hirofumi Aboshi
- Department of Legal Medicine, Nihon University School of Dentistry, Tokyo, Japan
| | - Hideki Saka
- Division of Forensic Odontology, Department of Diagnostic & Therapeutic Sciences, Meikai University School of Dentistry, Saitama, Japan; Forensic Odontology Center, Meikai University School of Dentistry, Saitama, Japan
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10
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Personal identification with orthopantomography using simple convolutional neural networks: a preliminary study. Sci Rep 2020; 10:13559. [PMID: 32782269 PMCID: PMC7419525 DOI: 10.1038/s41598-020-70474-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 07/09/2020] [Indexed: 11/08/2022] Open
Abstract
Forensic dental examination has played an important role in personal identification (PI). However, PI has essentially been based on traditional visual comparisons of ante- and postmortem dental records and radiographs, and there is no globally accepted PI method based on digital technology. Although many effective image recognition models have been developed, they have been underutilized in forensic odontology. The aim of this study was to verify the usefulness of PI with paired orthopantomographs obtained in a relatively short period using convolutional neural network (CNN) technologies. Thirty pairs of orthopantomographs obtained on different days were analyzed in terms of the accuracy of dental PI based on six well-known CNN architectures: VGG16, ResNet50, Inception-v3, InceptionResNet-v2, Xception, and MobileNet-v2. Each model was trained and tested using paired orthopantomographs, and pretraining and fine-tuning transfer learning methods were validated. Higher validation accuracy was achieved with fine-tuning than with pretraining, and each architecture showed a detection accuracy of 80.0% or more. The VGG16 model achieved the highest accuracy (100.0%) with pretraining and with fine-tuning. This study demonstrated the usefulness of CNN for PI using small numbers of orthopantomographic images, and it also showed that VGG16 was the most useful of the six tested CNN architectures.
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11
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Forensic odontology with digital technologies: A systematic review. J Forensic Leg Med 2020; 74:102004. [DOI: 10.1016/j.jflm.2020.102004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 06/18/2020] [Accepted: 06/21/2020] [Indexed: 11/18/2022]
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12
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Heinrich A, Güttler FV, Schenkl S, Wagner R, Teichgräber UKM. Automatic human identification based on dental X-ray radiographs using computer vision. Sci Rep 2020; 10:3801. [PMID: 32123249 PMCID: PMC7051975 DOI: 10.1038/s41598-020-60817-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 02/18/2020] [Indexed: 12/01/2022] Open
Abstract
A person may be identified by comparison between ante- and post-mortem dental panoramic radiographs (DPR). However, it is difficult to find reference material if the person is unknown. This is often the case when victims of crime or mass disaster are found. Computer vision can be a helpful solution to automate the finding of reference material in a large database of images. The purpose of the present study was to improve the automated identification of unknown individuals by comparison of ante- and post-mortem DPR using computer vision. The study includes 61,545 DPRs from 33,206 patients, acquired between October 2006 and June 2018. The matching process is based on the Speeded Up Robust Features (SURF) algorithm to find unique corresponding points between two DPRs (unknown person and database entry). The number of matching points found is an indicator for identification. All 43 individuals (100%) were successfully identified by comparison with the content of the feature database. The experimental setup was designed to identify unknown persons based on their DPR using an automatic algorithm system. The proposed tool is able to filter large databases with many entries of potentially matching partners. This identification method is suitable even if dental characteristics were removed or added in the past.
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Affiliation(s)
- Andreas Heinrich
- Department of Radiology, Jena University Hospital - Friedrich Schiller University, Am Klinikum 1, 07747, Jena, Germany.
| | - Felix V Güttler
- Department of Radiology, Jena University Hospital - Friedrich Schiller University, Am Klinikum 1, 07747, Jena, Germany
| | - Sebastian Schenkl
- Institute of Forensic Medicine, Jena University Hospital - Friedrich Schiller University, Am Klinikum 1, 07747, Jena, Germany
| | - Rebecca Wagner
- Institute of Forensic Medicine, Jena University Hospital - Friedrich Schiller University, Am Klinikum 1, 07747, Jena, Germany
| | - Ulf K-M Teichgräber
- Department of Radiology, Jena University Hospital - Friedrich Schiller University, Am Klinikum 1, 07747, Jena, Germany
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Rivis O, Potapchuk A, Goncharuk-Khomyn M, Bokoch A. Use of Mini-Implant Anchorage For Second Molar Mesialization: Comprehensive Approach For Treatment Efficiency Analysis. PESQUISA BRASILEIRA EM ODONTOPEDIATRIA E CLÍNICA INTEGRADA 2020. [DOI: 10.1590/pboci.2020.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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14
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Forrest A. Forensic odontology in DVI: current practice and recent advances. Forensic Sci Res 2019; 4:316-330. [PMID: 32002490 PMCID: PMC6968523 DOI: 10.1080/20961790.2019.1678710] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/30/2019] [Accepted: 10/03/2019] [Indexed: 11/03/2022] Open
Abstract
Forensic odontology frequently plays a significant role in identification of the victims of multi-fatality disasters, but not in all. It depends on adequate dental remains surviving the disaster and on the availability of dental records to be successful. This paper describes current practice in the techniques of identification in forensic odontology and outlines recent advances that are moving into the mainstream.Key PointsForensic odontology plays a key role in mass disaster victim identification (DVI) when good-quality antemortem (AM) dental records are available.Images including radiographs, computerized tomography (CT) data and three-dimensional (3D) scan data are considered more reliable AM records than written dental charts and odontograms.Interpretation, transcription and comparison of dental datasets are complex processes that should be undertaken only by trained dental professionals.The future of forensic odontology DVI techniques is likely to include the use of 3D datasets for comparison.
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Affiliation(s)
- Alex Forrest
- Health Support Queensland Forensic and Scientific Services, Coopers Plains, Queensland, Australia.,School of Dentistry, The University of Queensland, Brisbane, Australia.,School of Environment and Science, Griffith University, Nathan, Queensland, Australia
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15
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Validity of forensic odontology identification by comparison of conventional dental radiographs: A scoping review. Sci Justice 2019; 59:93-101. [DOI: 10.1016/j.scijus.2018.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 08/06/2018] [Accepted: 08/27/2018] [Indexed: 11/23/2022]
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16
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Andrade VM, Stibich CA, de Santa Martha PM, de Almeida CAP, Vieira ADCD. Identification of a Carbonized Body Using Implanted Surgical Plates: The Importance of Computed Tomography. J Forensic Sci 2017; 62:1374-1378. [DOI: 10.1111/1556-4029.13442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 11/11/2016] [Accepted: 11/28/2016] [Indexed: 10/19/2022]
Affiliation(s)
- Vanessa Moreira Andrade
- Forensic Odontology Service; Afrânio Peixoto Legal Medicine Institute; Avenida Francisco Bicalho, 300 Centro, CEP 20220-310 Rio de Janeiro RJ Brazil
| | - Christian Abreu Stibich
- Forensic Odontology Service; Afrânio Peixoto Legal Medicine Institute; Avenida Francisco Bicalho, 300 Centro, CEP 20220-310 Rio de Janeiro RJ Brazil
| | - Paulo Maurício de Santa Martha
- Forensic Odontology Service; Afrânio Peixoto Legal Medicine Institute; Avenida Francisco Bicalho, 300 Centro, CEP 20220-310 Rio de Janeiro RJ Brazil
| | - Casimiro Abreu Possante de Almeida
- Forensic Odontology Service; Afrânio Peixoto Legal Medicine Institute; Avenida Francisco Bicalho, 300 Centro, CEP 20220-310 Rio de Janeiro RJ Brazil
- Department of Social and Preventive Dentistry; Forensic Dentistry Service; Federal University of Rio de Janeiro; Avenida Carlos Chagas Filho, 373, Prédio do CCS, Bloco K, 2° andar, Sala 56, Ilha da Cidade Universitária, CEP 21941-902 Rio de Janeiro Brazil
| | - Andrea de Castro Domingos Vieira
- Department of Pathology and Oral Diagnosis; Radiology Service; Federal University of Rio de Janeiro; Avenida Carlos Chagas Filho, 373, Prédio do CCS, Bloco K, 2° andar, Sala 56, Ilha da Cidade Universitária, CEP 21941-902 Rio de Janeiro Brazil
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Perez IE. Dental Patterns in Peruvians: A Panoramic Radiography Study. THE JOURNAL OF FORENSIC ODONTO-STOMATOLOGY 2015; 33:9-17. [PMID: 26851634 PMCID: PMC5788560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The dental pattern is defined as the combination of distinct codes assigned to describe specific tooth conditions including virgin, missing, and restored teeth that comprise the complete dentition or from discrete groups of teeth. This pattern can be then compared to the dentition of individual/s in an attempt to determine positive identification. The aims of the present investigation were to study and determine the diversity of dental patterns in Peruvian citizens based on a sample of panoramic radiographs. Digital panoramic radiographs of 900 adult Peruvian patients (450 female and 450 male) were evaluated to determine the dental patterns. The most frequent dental patterns found in the complete dentition, maxillae, upper-anterior and lower-anterior sextants were all-virgin-teeth (0.3%), all-extracted teeth (1.9%), all-virgin teeth (1%) and all-virgin-teeth (34.2% and 72.3%) respectively. The diversity was calculated by the use of the Simpson's diversity index, the resulting values for the full-dentition, maxilla and mandible were over the 99.8% value and were similar to those previously reported in the scientific literature. This study demonstrates the positive benefit of dental patterns in the process of identification. Additionally a combination of codes is proposed that could prove useful in cases where a better radiographic description is required.
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Affiliation(s)
- Ivan E Perez
- Oral Radiology, CEROMA - Oral and Maxillofacial Radiology, Lima, Peru
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18
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Abstract
Digital dental radiography, intraoral and extraoral, is becoming more popular in dental practice. It offers convenience, such as lower exposure to radiation, ease of storing of images, and elimination of chemical processing. However, it also has disadvantages and drawbacks. One of these is the potential for confusion of the orientation of the image. This paper outlines one example of this, namely, the lateral inversion of the image. This source of confusion is partly inherent in the older model of phosphor storage plates (PSPs), as they allow both sides to be exposed without clue to the fact that the image is acquired on the wrong side. The native software allows digital manipulation of the X-ray image, permitting both rotation and inversion. Attempts to orientate the X-ray according to the indicator incorporated on the plate can then sometimes lead to inadvertent lateral inversion of the image. This article discusses the implications of such mistakes in dental digital radiography to forensic odontology and general dental practice.
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Affiliation(s)
- Sher-Lin Chiam
- Specialist Forensic Odontology, General Dental Practitioner, Australia
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19
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Anderson PJ, Yong R, Surman TL, Rajion ZA, Ranjitkar S. Application of three-dimensional computed tomography in craniofacial clinical practice and research. Aust Dent J 2014; 59 Suppl 1:174-85. [DOI: 10.1111/adj.12154] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- PJ Anderson
- Australian Craniofacial Unit; Women's and Children's Hospital; North Adelaide South Australia Australia
- School of Dentistry; The University of Adelaide; South Australia Australia
- School of Dental Sciences, Health Campus; Universiti Sains Malaysia; Kota Bharu Kelantan Malaysia
| | - R Yong
- School of Dentistry; The University of Adelaide; South Australia Australia
| | - TL Surman
- Australian Craniofacial Unit; Women's and Children's Hospital; North Adelaide South Australia Australia
- School of Dentistry; The University of Adelaide; South Australia Australia
| | - ZA Rajion
- School of Dental Sciences, Health Campus; Universiti Sains Malaysia; Kota Bharu Kelantan Malaysia
| | - S Ranjitkar
- School of Dentistry; The University of Adelaide; South Australia Australia
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20
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Age estimation standards for a Western Australian population using the dental age estimation technique developed by Kvaal et al. Forensic Sci Int 2014; 235:104.e1-6. [DOI: 10.1016/j.forsciint.2013.12.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 11/11/2013] [Accepted: 12/01/2013] [Indexed: 11/17/2022]
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