1
|
Choi HR, Siadari TS, Kim JE, Huh KH, Yi WJ, Lee SS, Heo MS. Automatic detection of teeth and dental treatment patterns on dental panoramic radiographs using deep neural networks. Forensic Sci Res 2022; 7:456-466. [PMID: 36353329 PMCID: PMC9639521 DOI: 10.1080/20961790.2022.2034714] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Disaster victim identification issues are especially critical and urgent after a large-scale disaster. The aim of this study was to suggest an automatic detection of natural teeth and dental treatment patterns based on dental panoramic radiographs (DPRs) using deep learning to promote its applicability as human identifiers. A total of 1 638 DPRs, of which the chronological age ranged from 20 to 49 years old, were collected from January 2000 to November 2020. This dataset consisted of natural teeth, prostheses, teeth with root canal treatment, and implants. The detection of natural teeth and dental treatment patterns including the identification of teeth number was done with a pre-trained object detection network which was a convolutional neural network modified by EfficientDet-D3. The objective metrics for the average precision were 99.1% for natural teeth, 80.6% for prostheses, 81.2% for treated root canals, and 96.8% for implants, respectively. The values for the average recall were 99.6%, 84.3%, 89.2%, and 98.1%, in the same order, respectively. This study showed outstanding performance of convolutional neural network using dental panoramic radiographs in automatically identifying teeth number and detecting natural teeth, prostheses, treated root canals, and implants. It is useful to use dental panoramic radiographs to perform the disaster victim identification (DVI).
Collapse
Affiliation(s)
- Hye-Ran Choi
- Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | | | - Jo-Eun Kim
- Department of Oral and Maxillofacial Radiology, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Kyung-Hoe Huh
- Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - Won-Jin Yi
- Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - Sam-Sun Lee
- Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - Min-Suk Heo
- Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| |
Collapse
|
2
|
Digital subtraction radiography in detection of vertical root fractures: accuracy evaluation for root canal filling, fracture orientation and width variables. An ex-vivo study. Clin Oral Investig 2020; 24:3671-3681. [PMID: 32080760 DOI: 10.1007/s00784-020-03245-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 01/29/2020] [Indexed: 01/19/2023]
Abstract
OBJECTIVE Ex-vivo evaluation of the detectability of vertical root fractures (VRFs) using digital subtraction radiography (DSR) and conventional digital periapical radiography (CDPR); investigation of the effect of root canal filling, x-ray angulation, and thickness of the VRF in the diagnostic accuracy. MATERIALS AND METHODS Sixty root canals were mechanically prepared and radiographed either with a gutta-percha root canal filling or without, at 0o and ± 10o. VRFs were introduced with a universal testing machine. The width and angulation of the fracture line with the radiographic beam were calculated. DSR was performed comparing radiographs obtained prior to and after the VRF induction. Five examiners evaluated the resultant images and analysis was performed using receiver operator characteristic (ROC) statistics and binary logistic regression tests. RESULTS No significant differences in sensitivity, specificity, and the areas under the ROC curves (AUC) between the CDPR and DSR were detected (p > 0.05), except for root canal filled teeth where the AUC for DSR was higher (p < 0.05). Using DSR, a VRF was 1.3 times more likely to be diagnosed [95% confidence intervals (CI): 1.045-1.59; p = 0.018]. A correct diagnosis was 2.399 times more likely to occur in non-filled teeth regardless of the radiographic technique (95% CI 1.940-2.965; p = 0). The regression coefficients were positive for width and negative for angle. CONCLUSIONS DSR showed a better diagnostic accuracy of VRFs compared with CDPR, in single root canal filled teeth. The angulation, the width, and the presence of a root canal filling affected the diagnostic potential. CLINICAL RELEVANCE DSR is a cost- and time-effective imaging technique that could contribute in early diagnosis of VRFs.
Collapse
|
3
|
Mikrogeorgis G, Eirinaki E, Kapralos V, Koutroulis A, Lyroudia K, Pitas I. Diagnosis of vertical root fractures in endodontically treated teeth utilising Digital Subtraction Radiography: A case series report. AUST ENDOD J 2017; 44:286-291. [PMID: 29226512 DOI: 10.1111/aej.12240] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Vertical root fractures are commonly associated with root-filled teeth. Diagnosis is challenging because the clinical signs are not completely pathognomonic, and conventional periapical radiography is often unreliable. Digital subtraction radiography (DSR) is able to detect small radiographic changes between two successive radiographs by subtracting out consistent radiographic elements. Its use could possibly assist in the diagnostic procedure. Four cases are presented to demonstrate the potential use of DSR in the detection of vertical root fractures in endodontically treated teeth. After the digital subtractions had been carried out, a dark line in the body of the roots was distinguishable, raising the possibility of the presence of a vertical root fracture. The use of contrast enhancement and pseudocolouring techniques assisted with the diagnosis of vertical root fractures. DSR proved to be a useful diagnostic tool for the detection of vertical root fractures in these four clinical cases.
Collapse
Affiliation(s)
- Georgios Mikrogeorgis
- Department of Endodontology, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Eleni Eirinaki
- Department of Endodontics, Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada
| | - Vasileios Kapralos
- Department of Endodontology, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Andreas Koutroulis
- Department of Endodontology, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Kleoniki Lyroudia
- Department of Endodontology, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioannis Pitas
- Artificial Intelligence and Information Analysis Laboratory, School of Informatics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| |
Collapse
|
4
|
Manigandan T, Sumathy C, Elumalai M, Sathasivasubramanian S, Kannan A. Forensic radiology in dentistry. J Pharm Bioallied Sci 2015; 7:S260-4. [PMID: 26015728 PMCID: PMC4439688 DOI: 10.4103/0975-7406.155944] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 10/31/2014] [Accepted: 11/09/2014] [Indexed: 11/04/2022] Open
Abstract
Radiography can play an important part in forensic odontology, mainly to establish identification. This may take the precise form of comparison between antemortem and postmortem radiographs. Radiographs may also be taken to determine the age of a minor victim and even help in the assessment of the sex and ethnic group. Comparable radiographs are an essential factor to confirm identification in a mass disaster.
Collapse
Affiliation(s)
- T Manigandan
- Department of Oral Medicine and Radiology, Sree Balaji Dental College and Hospital, Bharath University, Chennai, Tamil Nadu, India
| | - C Sumathy
- Department of Oral Medicine and Radiology, Meenakshi Ammal College and Hospital, Chennai, Tamil Nadu, India
| | - M Elumalai
- Department of Pharmacology, Sree Balaji Dental College and Hospital, Pallikaranai, Chennai, Tamil Nadu, India
| | - S Sathasivasubramanian
- Department of Oral Medicine and Radiology, Sri Ramachandra Dental College and Hospital, Chennai, Tamil Nadu, India
| | - A Kannan
- Department of Oral Medicine and Radiology, SRM Dental College and Hospital, Ramapuram, Chennai, Tamil Nadu, India
| |
Collapse
|
5
|
Van Der Meer DT, Brumit PC, Schrader BA, Dove SB, Senn DR. Root Morphology and Anatomical Patterns in Forensic Dental Identification: A Comparison of Computer-Aided Identification with Traditional Forensic Dental Identification*. J Forensic Sci 2010; 55:1499-503. [DOI: 10.1111/j.1556-4029.2010.01492.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
6
|
Santoro V, Lozito P, Mastrorocco N, De Donno A, Introna F. Personal identification by morphometric analyses of intra-oral radiographs of unrestored teeth*. J Forensic Sci 2009; 54:1081-4. [PMID: 19686397 DOI: 10.1111/j.1556-4029.2009.01106.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The aim of this study was to work out a biometric method for personal identification by comparing simulated antemortem and postmortem digital radiographs of unrestored teeth. Intra-oral radiographs of the inferior right first molar, without restorations, were acquired at two different times in 70 subjects using a standardized technique followed by a morphometric analysis. The program automatically supplied values of the absolute distances, relative distances, shape factors, moments, perimeter values, and the areas of the triangles, which were obtained by joining key reference points. The values for the homologous samples were compared with the heterologous samples. Statistical analysis was then carried out, resulting in a section point value of 0.9992. Higher correlation coefficients indicate positive identification, with less than 2% risk of false positives, and approximately 3% of false negatives. We have also tested the method on dental records from 30 patients in order to demonstrate the specificity and sensitivity of the system.
Collapse
Affiliation(s)
- Valeria Santoro
- Section of Legal Medicine, University of Bari, 70124 Bari, Italy.
| | | | | | | | | |
Collapse
|
7
|
Carvalho SPM, Silva RHAD, Lopes-Júnior C, Peres AS. A utilização de imagens na identificação humana em odontologia legal. Radiol Bras 2009. [DOI: 10.1590/s0100-39842009000200012] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Este artigo de revisão sistemática tem por objetivo citar os métodos de identificação humana por meio da radiologia, utilizados em odontologia legal. Para isso, realizou-se revisão de literatura com 19 trabalhos selecionados dentre 45 encontrados, após aplicação de critérios de inclusão. Há diversas técnicas radiológicas que podem ser utilizadas para auxiliar na identificação humana, tanto individual como geral, incluindo a determinação do gênero, do grupo étnico e, principalmente, da idade. A análise de radiografias e tomografias ante-mortem e post-mortem tornou-se uma ferramenta fundamental nos processos de identificação em odontologia legal, principalmente com o refinamento das técnicas adquiridas com o avanço da própria radio-logia e com a incorporação da informática. Conclui-se que a partir do conhecimento adequado dos métodos disponíveis, o profissional em odontologia legal pode optar pelo método que melhor preencha as características necessárias para o sucesso da identificação, tendo cuidado na aplicação correta da técnica e na interpretação precisa das informações obtidas.
Collapse
|
8
|
Flint DJ, Brent Dove S, Brumit PC, White M, Senn DR. Computer-aided Dental Identification: An Objective Method for Assessment of Radiographic Image Similarity*. J Forensic Sci 2009; 54:177-84. [DOI: 10.1111/j.1556-4029.2008.00921.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
9
|
Kieser JA, Laing W, Herbison P. Lessons Learned from Large-scale Comparative Dental Analysis Following the South Asian Tsunami of 2004. J Forensic Sci 2006; 51:109-12. [PMID: 16423233 DOI: 10.1111/j.1556-4029.2005.00012.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The aim of this study was to examine the quality of the ante-(AM) and postmortem (PM) dental data that were submitted for entry into the PLASS data system in Phuket, Thailand, following the Boxing Day (December 26) Tsunami, 2004. The investigators were two forensic odontologists who were part of the New Zealand Disaster Victim Identification team that worked at Wat Yang Yao morgue and at the Information Management Center in Phuket. Our findings underline the usefulness of dental data in human identification, but point to a number of significant sources of error. Of the 78 PM records received, only 68% of radiographs and 49% of photos confirmed the accompanying dental charting. This underlines the value, particularly of photographs of the dental arches, in quality control. It also points to a large error component, which may have been due to inexperience of the operators, fatigue, poor conditions in the temporary morgue, or the problem of tooth-colored fillings. Of the 106 AM records received, 62% were of unacceptable quality and 64% were either not accompanied by radiographs or had poor quality radiographs. These results indicate that AM data collection ideally needs to be collated and checked by a forensically trained dentist(s) in the country of origin.
Collapse
Affiliation(s)
- Jules A Kieser
- Department of Oral Sciences, Faculty of Dentistry, University of Otago, Dunedin, New Zealand.
| | | | | |
Collapse
|
10
|
Gruber J, Kameyama MM. [Role of radiology in forensic dentistry]. PESQUISA ODONTOLOGICA BRASILEIRA = BRAZILIAN ORAL RESEARCH 2001; 15:263-8. [PMID: 11705275 DOI: 10.1590/s1517-74912001000300014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
There are various methods for the identification of human remains; most of them are based on comparisons between available ante- and post-mortem data. Although fingerprinting is the most accurate and precise method, in many cases, such as in mutilated, decomposed, burned or fragmented bodies, it cannot be used, and the dental methods become of the utmost importance, since teeth and dental restorations are very resistant to destruction by fire--they keep numerous characteristics, which are quite unique, and offer the possibility of accurate and legally acceptable identification of remains. This brief review describes the progress of forensic dentistry during the last 25 years, regarding the procedures and techniques that use ante-mortem and post-mortem radiographs. Among the discussed progresses one can point out: a specially designed self-supporting film holder that retains intra-oral films in the mouths of deceased persons whose mandibular musculature has been fixed in rigor mortis; positioning devices suitable for reproducing the geometry of ante-mortem radiographic images; methods involving digital radiographs, which can be easily stored in a central archive, retrieved and transmitted, via modem, to mass casualty sites; age estimation procedures; identification of edentulous individuals comparing radiographs of the maxilla; and studies of validation of dental radiographs taken with ante-mortem and post-mortem intervals of up to 30 years.
Collapse
Affiliation(s)
- J Gruber
- Departamento de Química Fundamental do Instituto de Química da Universidade de São Paulo
| | | |
Collapse
|
11
|
The Application of Signal Detection Theory to Decision-Making in Forensic Science. J Forensic Sci 2001. [DOI: 10.1520/jfs14962j] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
12
|
|
13
|
Wenzel A. Current trends in radiographic caries imaging. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 1995; 80:527-39. [PMID: 8556463 DOI: 10.1016/s1079-2104(05)80152-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Caries prevalence, lesion site, and lesion behavior have changed over the past decade. This review looks at the impact of these changes on radiographic caries imaging.
Collapse
Affiliation(s)
- A Wenzel
- Department of Oral Radiology, Royal Dental College, University of Aarhus, Denmark
| |
Collapse
|