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Yurdabakan ZZ, Karadayı B, Yetimoğlu N. Evaluation of Third Molar Maturity Index by Cone Beam Computed Tomography in Legal Age Estimation: A Preliminary Study. Am J Forensic Med Pathol 2023; 44:103-110. [PMID: 36607975 DOI: 10.1097/paf.0000000000000809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
ABSTRACT This retrospective study aimed to evaluate the accuracy and applicability of the third molar maturity index (I 3M ) for discriminating Turkish minors from adults, and its relationship with chronological age using cone beam computed tomography (CBCT). A total of 122 CBCT scans of Turkish individuals (55 boys and 67 girls) aged 13 to 23 years were evaluated using the I 3M cutoff value. Chronological age gradually decreased as the I 3M value increased. The overall accuracy was 95.9%. The sensitivity and specificity of this test were 93.5% and 97.4%, respectively. Positive predictive value was 95.6%. The intraclass correlation coefficient values of the I 3M for the intraobserver and interobserver agreements were 0.998 and 0.996, respectively. This study showed relatively higher reproducibility of measurements on CBCT scans than on panoramic radiographs in the literature. Cone beam computed tomography may be advantageous and preferred over panoramic radiographs in distinguishing the legal age threshold of 18 years according to Cameriere's method when a more extensive investigation is needed to support the solution of challenging and uncertain cases in forensic medicine.
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Affiliation(s)
- Zeliha Zuhal Yurdabakan
- From the Department of Oral and Dentomaxillofacial Radiology, Altinbas University, Faculty of Dentistry
| | - Beytullah Karadayı
- Department of Forensic Medicine, Istanbul University-Cerrahpaşa, Cerrahpaşa Medical Faculty, Istanbul
| | - Nihal Yetimoğlu
- Department of Oral and Dentomaxillofacial Radiology, Yozgat Bozok University, Faculty of Dentistry, Yozgat, Turkey
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Evaluation of the Diagnostic and Prognostic Accuracy of Artificial Intelligence in Endodontic Dentistry: A Comprehensive Review of Literature. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2023; 2023:7049360. [PMID: 36761829 PMCID: PMC9904932 DOI: 10.1155/2023/7049360] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 10/23/2022] [Accepted: 11/26/2022] [Indexed: 02/01/2023]
Abstract
Aim This comprehensive review is aimed at evaluating the diagnostic and prognostic accuracy of artificial intelligence in endodontic dentistry. Introduction Artificial intelligence (AI) is a relatively new technology that has widespread use in dentistry. The AI technologies have primarily been used in dentistry to diagnose dental diseases, plan treatment, make clinical decisions, and predict the prognosis. AI models like convolutional neural networks (CNN) and artificial neural networks (ANN) have been used in endodontics to study root canal system anatomy, determine working length measurements, detect periapical lesions and root fractures, predict the success of retreatment procedures, and predict the viability of dental pulp stem cells. Methodology. The literature was searched in electronic databases such as Google Scholar, Medline, PubMed, Embase, Web of Science, and Scopus, published over the last four decades (January 1980 to September 15, 2021) by using keywords such as artificial intelligence, machine learning, deep learning, application, endodontics, and dentistry. Results The preliminary search yielded 2560 articles relevant enough to the paper's purpose. A total of 88 articles met the eligibility criteria. The majority of research on AI application in endodontics has concentrated on tracing apical foramen, verifying the working length, projection of periapical pathologies, root morphologies, and retreatment predictions and discovering the vertical root fractures. Conclusion In endodontics, AI displayed accuracy in terms of diagnostic and prognostic evaluations. The use of AI can help enhance the treatment plan, which in turn can lead to an increase in the success rate of endodontic treatment outcomes. The AI is used extensively in endodontics and could help in clinical applications, such as detecting root fractures, periapical pathologies, determining working length, tracing apical foramen, the morphology of root, and disease prediction.
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Mizuhashi F, Watarai Y, Ogura I. Diagnosis of Vertical Root Fractures in Endodontically Treated Teeth by Cone-Beam Computed Tomography. J Imaging 2022; 8:jimaging8030051. [PMID: 35324606 PMCID: PMC8949458 DOI: 10.3390/jimaging8030051] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 02/01/2023] Open
Abstract
The purpose of this study was to investigate the characteristics and the detection ability of vertical root fractures in endodontically treated teeth by intraoral radiography and cone-beam computed tomography (CBCT). CBCT images of 50 patients with root fractures in endodontically treated teeth were reviewed, and 36 vertical root fractures were taken in this study. The cause of fracture, core construction, kind of teeth, and fracture direction (bucco-lingual and mesio-distal fractures) were investigated. Detection ability of vertical root fractures by intraoral radiography and CBCT was also examined. Statistical analyses concerning the characteristics were performed by χ2 test, and the detection ability was analyzed by cross-tabulation. All of the fractured teeth were nontraumatized teeth. The vertical root fracture occurrence was not differed by core construction. The vertical root fracture number was largest at the premolar teeth (p = 0.005), and the number of the bucco-lingual fracture was larger than the mesio-distal fracture (p = 0.046). Vertical root fractures were detectable using CBCT, while undetectable by intraoral radiography (p < 0.001). Vertical root fractures occurred easily in premolar teeth with bucco-lingual direction, and CBCT is an adequate radiographic method to diagnose vertical root fracture.
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Affiliation(s)
- Fumi Mizuhashi
- Department of Removable Prosthodontics, The Nippon Dental University School of Life Dentistry at Niigata, Niigata 951-8580, Japan;
- Correspondence: ; Tel.: +81-25-267-1500
| | - Yuko Watarai
- Department of Removable Prosthodontics, The Nippon Dental University School of Life Dentistry at Niigata, Niigata 951-8580, Japan;
| | - Ichiro Ogura
- Department of Oral and Maxillofacial Radiology, The Nippon Dental University School of Life Dentistry at Niigata, Niigata 951-8580, Japan;
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Combined Use of 2 Cone-beam Computed Tomography Scans in the Assessment of Vertical Root Fracture in Teeth with Intracanal Material. J Endod 2021; 47:1132-1137. [DOI: 10.1016/j.joen.2021.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 03/06/2021] [Accepted: 04/04/2021] [Indexed: 11/20/2022]
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Caetano AP, Sousa TO, Oliveira MR, Evanglista K, Bueno JM, Silva MA. Accuracy of three cone-beam CT devices and two software systems in the detection of vertical root fractures. Dentomaxillofac Radiol 2021; 50:20200334. [PMID: 33259236 DOI: 10.1259/dmfr.20200334] [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] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The aim of this study was to compare the accuracy of vertical root fracture (VRF) detection using three tomography devices and two software systems in teeth with different endodontic fillings. METHODS The sample consisted of 45 premolars divided into 3 groups: No filling (NF, n=15); Gutta percha (GP, n=15) and Metallic Post (MP, n=15). Cone-beam computed tomography (CBCT) images were acquired in Kodak 9000 3D, Orthopantomography 300 (OP300) and PreXion 3D devices, before and after induced root fractures. Two oral radiologists analyzed all images using InVivoDental and e-Vol DX software systems. The analysis was repeated after 15 days in 30% of the sample. Data analysis compared receiver operating characteristic (ROC) curves, as well the areas under the ROC curves. Accuracy, sensitivity, specificity, positive and negative predictive value were calculated according to each tomographic device and software. Intra- and interexaminer reliability were tested using the Kappa coefficient. RESULTS The highest accuracy was seen in the image set from the PreXion 3D, using InVivo (0.96) or e-Vol DX (0.92) in image analysis. The OP300 device presented a similar performance of the PreXion 3D in teeth with different endodontic fillings. When using e-Vol DX, the accuracy of Kodak 9000 3D improved from 0.62 to 0.74. CONCLUSIONS The PreXion 3D device is the most accurate when detecting VRF, with a performance similar to the OP300 in endodontic filled teeth. Kodak 9000 3D is indicated for teeth without fillings, with better accuracy using e-Vol DX software.
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Affiliation(s)
- Aline Pf Caetano
- Faculty of Dentistry, Federal University of Goiás, Goiânia, Goiás, Brazil
| | | | - Mariana R Oliveira
- Faculty of Dentistry, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Karine Evanglista
- Faculty of Dentistry, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Juliano M Bueno
- São Leopoldo Mandic, Private Practioner, Goiânia, Goiás, Brazil
| | - Maria Ag Silva
- Faculty of Dentistry, Federal University of Goiás, Goiânia, Goiás, Brazil
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Miyashita H, Asaumi R, Sakamoto A, Kawai T, Igarashi M. Root canal sealers affect artifacts on cone-beam computed tomography images. Odontology 2021; 109:679-686. [PMID: 33550479 DOI: 10.1007/s10266-021-00590-8] [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: 12/08/2020] [Accepted: 01/08/2021] [Indexed: 11/29/2022]
Abstract
The purpose of this study was to evaluate the appearance of artifacts by four types of root canal filling sealers on cone-beam computed tomography (CBCT) images. Thirty standardized tooth models were given the radiopacity equivalent to human teeth, and root canal preparation was performed using WaveOne Gold. Root canal filling by a single-point method was performed using WaveOne Gold gutta-percha points and four types of root canal sealers: AH Plus (AH), CANALS (CA), BioRoot RCS (BR), and MTA Fillapex (MTA). Samples were taken by periapical radiography at 60 kV and scanned by CBCT at three tube voltages (70, 85, and 100 kV). The gray-scale values (GVs) of the periapical radiographs were measured and the aluminum equivalents were calculated. On the CBCT axial images, the artifact and dentin area GVs were measured and the rate of change in the GV (RCGV) was calculated as follows: RCGV (%) = (dentin area GV - artifact GV)/dentin area GV × 100. High-density areas with artifacts on the CBCT images were also measured. On the periapical radiographs, the aluminum equivalent was largest for AH and smallest for MTA. On the CBCT images, AH showed the largest values for both RCGV and the high-density areas, while BR and MTA showed comparable values. Correlations were found between the radiopacity on the periapical radiographs and the degree of artifacts on the CBCT images. These findings suggest that the greater the contrast in the 2D image, the higher the artifacts in the 3D image.
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Affiliation(s)
- Hazuki Miyashita
- Department of Endodontics, School of Life Dentistry at Tokyo, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan.
| | - Rieko Asaumi
- Department of Oral and Maxillofacial Radiology, School of Life Dentistry at Tokyo, The Nippon Dental University, Tokyo, Japan
| | - Ayaka Sakamoto
- Radiographic Laboratory, The Nippon Dental University Hospital, Tokyo, Japan
| | - Taisuke Kawai
- Department of Oral and Maxillofacial Radiology, School of Life Dentistry at Tokyo, The Nippon Dental University, Tokyo, Japan
| | - Masaru Igarashi
- Department of Endodontics, School of Life Dentistry at Tokyo, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan
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Wanderley VA, Vasconcelos KDF, Leite AF, Oliveira ML, Jacobs R. Dentomaxillofacial CBCT: Clinical Challenges for Indication-oriented Imaging. Semin Musculoskelet Radiol 2020; 24:479-487. [PMID: 33036036 DOI: 10.1055/s-0040-1709428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This critical review discusses the clinical challenges for patient-specific and indication-oriented dentomaxillofacial cone beam computed tomography (CBCT). Large variations among units and protocols may lead to variable degrees of diagnostic and three-dimensional model accuracy, impacting both specific diagnostic tasks and treatment planning. Particular indications, whether diagnostic or therapeutic, may give rise to very specific challenges with regard to CBCT unit and parameter setup, considering the required image quality, segmentation accuracy, and artifact level. Considering that dental materials are in the field of view needed for diagnosis or treatment planning, artifact expression is a dominant factor in proper CBCT selection. The heterogeneity of dental CBCT units and performances may highly impact the scientific results. Thus research findings cannot be simply generalized as published evidence, and a demonstrated clinical applicability for a specific indication should not be simply extrapolated from one CBCT unit to another.
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Affiliation(s)
- Victor Aquino Wanderley
- Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil.,OMFS IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Karla de Faria Vasconcelos
- OMFS IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - André Ferreira Leite
- OMFS IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.,Department of Dentistry, Faculty of Health Sciences, University of Brasília, Brasília, Brazil
| | - Matheus L Oliveira
- Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
| | - Reinhilde Jacobs
- OMFS IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.,Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
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Fontenele RC, Farias Gomes A, Rosado LPL, Neves FS, Freitas DQ. Mapping the expression of beam hardening artefacts produced by metal posts positioned in different regions of the dental arch. Clin Oral Investig 2020; 25:571-579. [PMID: 32772328 DOI: 10.1007/s00784-020-03494-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/03/2020] [Indexed: 11/24/2022]
Abstract
OBJECTIVES To objectively assess the expression and direction of artefacts in the vicinity of metal posts positioned in different mandibular regions. MATERIALS AND METHODS A human mandible had two sockets prepared-anterior and posterior regions-to accommodate a single-rooted tooth. Two CBCT units, Picasso Trio and OP300, were used. CBCT images of the tooth without metal post, and with silver-palladium, nickel-chromium, or cobalt-chromium posts (experimental groups) were individually acquired. Then, 8 lines of interest (LOIs) were determined around the root canal, in an axial reconstruction: 4 in orthogonal (buccal, lingual, mesial, and distal) directions, and 4 in oblique (mesiobuccal, distobuccal, mesiolingual, and distolingual) directions. The mean of gray values was measured for each LOI. RESULTS For the OP300, in general, all experimental groups showed greater expression of hyperdense streaks in orthogonal LOIs and greater expression of hypodense streaks in oblique LOIs. For the Picasso Trio, for both mandibular regions, the buccal LOI showed greater expression of hypodense streaks; conversely, greater expression of hyperdense streaks was observed in the distal and distobuccal LOIs in the anterior region and in the mesiolingual LOI in the posterior region. The silver-palladium group showed significantly greater expression of beam hardening artefacts in the posterior region of the mandible, regardless of the CBCT unit (p < 0.05). The mandibular posterior region showed significantly lower gray values than the anterior region (p < 0.05). CONCLUSION The expression and direction of artefacts produced in the vicinity of metal posts vary according to the mandibular region, composition of the post, and CBCT unit. CLINICAL RELEVANCE The mapping of artefacts produced by metal posts reveals the root regions with greater expression of hypodense and hyperdense artefacts, which may contribute to recognizing regions more likely to mimic or hide root fracture lines.
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Affiliation(s)
- Rocharles C Fontenele
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil.
| | - Amanda Farias Gomes
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil
| | - Lucas P Lopes Rosado
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil
| | - Frederico S Neves
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil.,Department of Propedeutics and Integrated Clinic, Division of Oral Radiology, School of Dentistry, Federal University of Bahia, Salvador, BA, Brazil
| | - Deborah Q Freitas
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil
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Assessment of the Influence of Different Intracanal Materials on the Detection of Root Fracture in Birooted Teeth by Cone-beam Computed Tomography. J Endod 2019; 46:264-270. [PMID: 31812360 DOI: 10.1016/j.joen.2019.10.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 10/07/2019] [Accepted: 10/27/2019] [Indexed: 11/23/2022]
Abstract
INTRODUCTION The aim of this study was to assess 2 cone-beam computed tomographic systems on the detection of artificially induced vertical root fractures (VRFs) and artifact intensity using birooted teeth restored with different intracanal materials. METHODS The sample consisted of 20 extracted birooted premolars. Root fracture was induced in half of the sample. Seven intracanal material combinations were used in each tooth, 1 at a time: unrestored, gutta-percha, a buccal root with gutta-percha and a lingual root with a fiberglass post, a buccal root with gutta-percha and a lingual root with a metal core fiberglass post, fiberglass posts, metal core fiberglass posts, and NiCr posts. Cone-beam computed tomographic scans were acquired using CS 9000 3D (Carestream Dental Rochester, NY) and OP300 (Instrumentarium Dental Inc, Tuusula, Finland) units. Exposure parameters were fixed at 90 kV and 8 mA. The voxel size and field of view were set at 0.085 mm and 5 × 5 cm for OP300 and 0.076 mm and 5 × 3.75 cm for CS 9000, respectively. Two observers assessed all images using a 5-point confidence scale for VRF detection and a 4-point score for artifact interference. The sensitivity, specificity, accuracy, and area under the receiver operating characteristic curve were compared using 2-way analysis of variance and the Tukey test (α = 0.05). Artifact interference was evaluated by descriptive statistics and the chi-square test. RESULTS There were significant differences between scanners (P > .05) and among the different intracanal material groups (OP300) (P < .05) for specificity. When a metal post was present in both roots, severe artifact interference was observed in all images. CONCLUSIONS CS 9000 3D presented better performance than OP300 on VRF detection of endodontically treated teeth. Unrestored teeth and teeth filled with fiberglass posts were considered the groups with the lowest artifact interference and the highest VRF detection results.
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Byakova SF, Novozhilova NE, Makeeva IM, Grachev VI, Kasatkina IV. The detection of vertical root fractures in post-core restored teeth with cone-beam CT: in vivo and ex vivo. Dentomaxillofac Radiol 2019; 48:20180327. [PMID: 31095425 DOI: 10.1259/dmfr.20180327] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To compare the accuracy of cone-beam CT ex vivo and in vivo for the detection of artificially created large and small vertical root fractures in extracted teeth restored with post-core. METHODS Individual metal cast post-cores were fixed in the root canals of 50 extracted single-rooted human teeth. In 30 teeth fractures were created by tapping posts with a hammer. The teeth were sterilised in autoclave and embedded into bite-plates made of silicon impression material. Cone-beam CT scanning was performed ex vivo and in vivo . For the in vivo scanning, teeth in sterile plastic bags were inserted into the mouths of volunteers. Then the teeth were sectioned with low-speed saw and the widths of the VRFs were measured microscopically. The teeth were distributed into 2 groups in accordance with the measured fractures' widths: large (wider than 180-250 µm) and small (80-150 µm). Five observers assessed the presence of vertical root fractures on axial CBCT slices. Sensitivity, specificity, accuracy and inter examiner agreement were calculated. RESULTS The accuracy of cone-beam CT in vitro for large and small vertical root fractures detection was 0.56 and 0.40 respectively (p = 0.043). The sensitivity values were 0.53 and 0.27 for large and small vertical root fractures, respectively (p = 0.043). The visualisation of fracture lines in vivo was impossible in 90 % of cases, because of low image quality. Inter examiner reliability analysis showed κ values ranging from 0.02 to 0.54. CONCLUSIONS Fracture width affected the in vitro detectability of vertical root fractures by cone-beam CT in teeth with metal cast post-cores. The detectability of root fractures in vivo was decreased because of low image quality, making the assessment of sound tooth tissue impossible.
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Affiliation(s)
- Svetlana F Byakova
- Department of Therapeutic Dentistry, Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University (Sechenov University) of the Ministry of Health of the Russian Federation, Moscow, Russia
| | - Nina E Novozhilova
- Department of Therapeutic Dentistry, Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University (Sechenov University) of the Ministry of Health of the Russian Federation, Moscow, Russia
| | - Irina M Makeeva
- Department of Therapeutic Dentistry, Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University (Sechenov University) of the Ministry of Health of the Russian Federation, Moscow, Russia
| | - Vasiliy I Grachev
- Independent X-ray Diagnostic Laboratory, "3D Lab", Bolshaya Andronievskaya, Moscow, Russia
| | - Inna V Kasatkina
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Moscow, Russia
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Guo XL, Li G, Yin S, Ma RH, Guo YJ, Bornstein MM. Effect of fracture orientation on detection accuracy of vertical root fractures in non-endodontically treated teeth using cone beam computed tomography. Clin Oral Investig 2019; 23:4433-4439. [DOI: 10.1007/s00784-019-02905-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 04/04/2019] [Indexed: 11/25/2022]
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Byakova SF, Novozhilova NE, Makeeva IM, Grachev VI, Kasatkina IV. The accuracy of CBCT for the detection and diagnosis of vertical root fracturesin vivo. Int Endod J 2019; 52:1255-1263. [DOI: 10.1111/iej.13114] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 03/07/2019] [Indexed: 12/14/2022]
Affiliation(s)
- S. F. Byakova
- Department of Therapeutic Dentistry Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University (Sechenov University) of the Ministry of Health of the Russian Federation MoscowRussia
| | - N. E. Novozhilova
- Department of Therapeutic Dentistry Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University (Sechenov University) of the Ministry of Health of the Russian Federation MoscowRussia
| | - I. M. Makeeva
- Department of Therapeutic Dentistry Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University (Sechenov University) of the Ministry of Health of the Russian Federation MoscowRussia
| | - V. I. Grachev
- Independent X‐ray diagnostic laboratory “3D Lab” MoscowRussia
| | - I. V. Kasatkina
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS Moscow Russia
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13
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Nikbin A, Dalili Kajan Z, Taramsari M, Khosravifard N. Effect of object position in the field of view and application of a metal artifact reduction algorithm on the detection of vertical root fractures on cone-beam computed tomography scans: An in vitro study. Imaging Sci Dent 2018; 48:245-254. [PMID: 30607348 PMCID: PMC6305778 DOI: 10.5624/isd.2018.48.4.245] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 08/14/2018] [Accepted: 08/24/2018] [Indexed: 01/28/2023] Open
Abstract
Purpose To assess the effects of object position in the field of view (FOV) and application of a metal artifact reduction (MAR) algorithm on the diagnostic accuracy of cone-beam computed tomography (CBCT) for the detection of vertical root fractures (VRFs). Materials and Methods Sixty human single-canal premolars received root canal treatment. VRFs were induced in 30 endodontically treated teeth. The teeth were then divided into 4 groups, with 2 groups receiving metal posts and the remaining 2 only having an empty post space. The roots from different groups were mounted in a phantom made of cow rib bone, and CBCT scans were obtained for the 4 different groups. Three observers evaluated the images independently. Results The highest frequency of correct diagnoses of VRFs was obtained with the object positioned centrally in the FOV, using the MAR algorithm. Peripheral positioning of the object without the MAR algorithm yielded the highest sensitivity for the first observer (66.7%). For the second and third observers, a central position improved sensitivity, with or without the MAR algorithm. In the presence of metal posts, central positioning of the object in the FOV significantly increased the diagnostic sensitivity and accuracy compared to peripheral positioning. Conclusion Diagnostic accuracy was higher with central positioning than with peripheral positioning, irrespective of whether the MAR algorithm was applied. However, the effect of the MAR algorithm was more significant with central positioning than with peripheral positioning of the object in the FOV. The clinical experience and expertise of the observers may serve as a confounder in this respect.
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Affiliation(s)
- Ava Nikbin
- Department of Maxillofacial Radiology, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | - Zahra Dalili Kajan
- Dental Sciences Research Center, Department of Maxillofacial Radiology, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | - Mehran Taramsari
- Dental Sciences Research Center, Department of Endodontics, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | - Negar Khosravifard
- Dental Sciences Research Center, Department of Maxillofacial Radiology, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
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Lira de Farias Freitas AP, Cavalcanti YW, Costa FCM, Peixoto LR, Maia AMA, Rovaris K, Bento PM, Melo DP. Assessment of artefacts produced by metal posts on CBCT images. Int Endod J 2018; 52:223-236. [PMID: 30107037 DOI: 10.1111/iej.12999] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 08/12/2018] [Indexed: 01/27/2023]
Abstract
AIM To evaluate artefact intensity in cone beam computed tomography (CBCT) images of two alloys used in metal posts scanned using different exposure parameters. METHODOLOGY The sample consisted of 20 single-rooted teeth divided into two groups for use with either a NiCr post or AgPd post. All teeth were scanned with and without their corresponding metal posts and with and without the presence of an extra restored tooth in the arch. The samples were scanned using CS 9000 3D scanner with two exposure protocols: 85 kV 6.3 mA and 85 kV 10 mA. Voxel size and FOV were fixed at 0.100 mm and 5 cm × 3.75 cm. The presence of artefacts was assessed qualitatively by two calibrated observers using the CBCT volume and paired 2D images, and quantitatively by one trained observer, using ImageJ software. Wilcoxon's signed rank, Mann-Whitney, kappa and chi-square tests were used for qualitative analyses. Two-way anova and Tukey's tests were used for quantitative analyses. All analyses were conducted considering the 95% confidence level (α < 0.05). RESULTS For the CBCT volume qualitative analysis, significant differences were observed between the metal alloys in the presence of an extra restored tooth, with higher artefact intensity for AgPd when assessing hypodense halos and lines (P = 0.006). Images with two restored teeth had significantly more hypodense and hyperdense lines (P = 0.033). When evaluating exposure parameters and number of restored teeth, the paired image quality analysis revealed significant disagreement between observers for diagnostic image quality (P = 0.001). Quantitative artefact analysis revealed higher artefact intensity for the AgPd posts in the presence of two restored teeth. CONCLUSION Although the exposure parameters tested did not interfere with artefact intensity, post alloys with a higher atomic number and the presence of another metal structure in the arch increased artefact intensity and impaired the diagnostic quality of CBCT images.
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Affiliation(s)
| | - Y W Cavalcanti
- Department of Clinical and Social Dentistry, Federal University of Paraíba, João Pessoa, Brazil
| | - F C M Costa
- Department of Dentistry, State University of Paraíba, Campina Grande, PB, Brazil
| | - L R Peixoto
- Department of Dentistry, State University of Paraíba, Campina Grande, PB, Brazil
| | - A M A Maia
- Department of Dentistry, State University of Paraíba, Campina Grande, PB, Brazil
| | - K Rovaris
- Department of Dentistry, State University of Paraíba, Campina Grande, PB, Brazil
| | - P M Bento
- Department of Dentistry, State University of Paraíba, Campina Grande, PB, Brazil
| | - D P Melo
- Department of Dentistry, State University of Paraíba, Campina Grande, PB, Brazil
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15
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Wanderley VA, Freitas DQ, Haiter-Neto F, Oliveira ML. Influence of Tooth Orientation on the Detection of Vertical Root Fracture in Cone-beam Computed Tomography. J Endod 2018; 44:1168-1172. [DOI: 10.1016/j.joen.2018.04.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 03/18/2018] [Accepted: 04/02/2018] [Indexed: 10/14/2022]
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16
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Fox A, Basrani B, Lam EW. The Performance of a Zirconium-based Root Filling Material with Artifact Reduction Properties in the Detection of Artificially Induced Root Fractures Using Cone-beam Computed Tomographic Imaging. J Endod 2018; 44:828-833. [DOI: 10.1016/j.joen.2018.02.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 01/28/2018] [Accepted: 02/04/2018] [Indexed: 11/17/2022]
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17
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De Martin e Silva D, Campos CN, Pires Carvalho AC, Devito KL. Diagnosis of Mesiodistal Vertical Root Fractures in Teeth with Metal Posts: Influence of Applying Filters in Cone-beam Computed Tomography Images at Different Resolutions. J Endod 2018; 44:470-474. [DOI: 10.1016/j.joen.2017.08.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 08/10/2017] [Accepted: 08/26/2017] [Indexed: 12/14/2022]
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18
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Oenning AC, Salmon B, Vasconcelos KDF, Pinheiro Nicolielo LF, Lambrichts I, Sanderink G, Pauwels R, Jacobs R. DIMITRA paediatric skull phantoms: development of age-specific paediatric models for dentomaxillofacial radiology research. Dentomaxillofac Radiol 2018; 47:20170285. [PMID: 29161909 DOI: 10.1259/dmfr.20170285] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES This report aims to describe the development of age-specific phantoms for use in paediatric dentomaxillofacial radiology research. These phantoms are denoted DIMITRA paediatric skull phantoms as these have been primarily developed and validated for the DIMITRA European research project (Dentomaxillofacial paediatric imaging: an investigation towards low-dose radiation induced risks). METHODS To create the DIMITRA paediatric phantoms, six human paediatric skulls with estimated ages ranging between 4 and 10 years- old were selected, protected with non-radiopaque tape and immersed in melted Mix-D soft tissue equivalent material, by means of a careful procedure (layer-by-layer). Mandibles were immersed separately and a Mix-D tongue model was also created. For validation purposes, the resulting paediatric phantoms were scanned using a cone-beam CT unit with different exposure parameter settings. RESULTS Preliminary images deriving from all scans were evaluated by two dentomaxillofacial radiologists, to check for air bubbles, artefacts and inhomogeneities of the Mix-D and a potential effect on the visualization of the jaw bone. Only skulls presenting perfect alignment of Mix-D surrounding the bone surfaces with adequate and realistic soft tissue thickness density were accepted. CONCLUSIONS The DIMITRA anthropomorphic phantoms can yield clinically equivalent images for optimization studies in dentomaxillofacial research. In addition, the layer-by-layer technique proved to be practical and reproducible, as long as recommendations are carefully followed.
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Affiliation(s)
- Anne Caroline Oenning
- 1 Department of Dental Medicine,Orofacial Pathologies Imaging and Biotherapies Lab, Paris Descartes University Sorbonne Paris Cité Bretonneau Hospital , Paris , France.,2 Department of Oral Diagnosis,Division of Oral Radiology, Piracicaba Dental School, University of Campinas , Piracicaba, Sao Paulo , Brazil
| | - Benjamin Salmon
- 1 Department of Dental Medicine,Orofacial Pathologies Imaging and Biotherapies Lab, Paris Descartes University Sorbonne Paris Cité Bretonneau Hospital , Paris , France
| | - Karla de Faria Vasconcelos
- 2 Department of Oral Diagnosis,Division of Oral Radiology, Piracicaba Dental School, University of Campinas , Piracicaba, Sao Paulo , Brazil.,3 Department of Imaging and Pathology,OMFS IMPATH research group, Catholic University of Leuven, University Hospitals Leuven , Leuven , Belgium
| | - Laura Ferreira Pinheiro Nicolielo
- 3 Department of Imaging and Pathology,OMFS IMPATH research group, Catholic University of Leuven, University Hospitals Leuven , Leuven , Belgium
| | - Ivo Lambrichts
- 4 Department of Morphology, Biomedical Research Institute, University of Hasselt , Hasselt , Belgium
| | - Gerard Sanderink
- 5 Department of Oral Radiology,Academic Center for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit , Amsterdam , Netherlands
| | - Ruben Pauwels
- 3 Department of Imaging and Pathology,OMFS IMPATH research group, Catholic University of Leuven, University Hospitals Leuven , Leuven , Belgium.,6 Department of Radiology,Faculty of Dentistry, Chulalongkorn University , Bangkok , Thailand
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- 7 DIMITRA group available at www.dimitra.be , Leuven , Belgium
| | - Reinhilde Jacobs
- 3 Department of Imaging and Pathology,OMFS IMPATH research group, Catholic University of Leuven, University Hospitals Leuven , Leuven , Belgium.,8 Department of Dental Medicine,Karolinska Institutet , Stockholm , Sweden
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19
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Tolentino EDS, Yamashita FC, de Albuquerque S, Walewski LA, Iwaki LCV, Takeshita WM, Silva MC. Reliability and accuracy of linear measurements in cone-beam computed tomography using different software programs and voxel sizes. J Conserv Dent 2018; 21:607-612. [PMID: 30546204 PMCID: PMC6249944 DOI: 10.4103/jcd.jcd_314_18] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Objectives: The aim of this study is to evaluate the accuracy of linear measurements on cone-beam computed tomography (CBCT) images using three software programs and different voxel sizes. Methods: Ten human mandibles with 25 silica markers were scanned for 0.250-, 0.300-, and 0.400-mm voxels in the i-CAT New Generation (Imaging Sciences International, Hatfield, PA, USA). Thirty-five linear measurements were carried out by two examiners two times on the multiplanar reconstructions in the following software programs: XoranCat version 3.1.62 (Xoran Technologies, Ann Arbor, MI, USA), RadiAnt DICOM 2.2.9 Viewer (Medixant, Poznan- Poland) and InVesalius 3.0.0 (Centro de Tecnologia da Informação Renato Archer, Campinas, SP, Brazil). The physical measurements were made by another observer two times using a digital caliper on the macerated mandibles. ANOVA test was used to compare voxels and software programs. Pearson correlation and the Bland–atman tests were used to compare physical and virtual measurements and to evaluate the accuracy of the software programs, respectively (P < 0.05). Results: There was no statistically significant difference when the measurements were compared in acquisitions with different voxel sizes analyzed in the three software programs. There was also no difference when the measurements were compared between the software programs and the digital caliper. Excellent intra- and inter-observer reliability for the markers, physical measurements, and multiplanar reconstructions were found. Conclusion: Linear measurements in the XoranCat, Radiant, and InVesalius software programs are reliable and accurate compared with physical measurements. The different acquisition protocols using different voxel sizes did not influence the accuracy of linear measurements in CBCT images.
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Affiliation(s)
| | | | | | - Leticia A Walewski
- Department of Dentistry, State University of Maringá, Maringá, PR, Brazil
| | - Lilian C V Iwaki
- Department of Dentistry, State University of Maringá, Maringá, PR, Brazil
| | - Wilton M Takeshita
- Department of Dentistry, Federal University of Sergipe, Aracajú, SE, Brazil
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20
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Elsaltani MH, Farid MM, Eldin Ashmawy MS. Detection of Simulated Vertical Root Fractures: Which Cone-beam Computed Tomographic System Is the Most Accurate? J Endod 2016; 42:972-7. [DOI: 10.1016/j.joen.2016.03.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 03/09/2016] [Accepted: 03/13/2016] [Indexed: 12/25/2022]
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21
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Cone-beam Computed Tomography for Detecting Vertical Root Fractures in Endodontically Treated Teeth: A Systematic Review. J Endod 2016; 42:177-85. [DOI: 10.1016/j.joen.2015.10.005] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 09/25/2015] [Accepted: 10/05/2015] [Indexed: 11/17/2022]
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22
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Huang CC, Lee BS. Diagnosis of vertical root fracture in endodontically treated teeth using computed tomography. J Dent Sci 2015. [DOI: 10.1016/j.jds.2015.01.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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23
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Abstract
Similar to Medicine, digital communication, information processing, and x-ray imaging have changed the face of dentistry. The incorporation of digital systems into medical and dental practice has necessitated development of a standard that allows reliable transmission of information between the devices taking the images, devices storing the images, and devices displaying the images. This standard is termed as DICOM. The following article briefly reviews how DICOM came about, how dentistry is involved, the various elements that are part of the DICOM system, and how DICOM is currently used in dentistry.
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Affiliation(s)
- Jeff Burgess
- (Retired) Clinical Assistant Professor, Department of Oral Medicine, University of Washington School of Dental Medicine; (Retired) Attending in Pain Center, University of Washington Medical Center; (Retired) Private Practice in Hawaii and Washington; Director, Oral Care Research Associates, USA
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24
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Ma RH, Ge ZP, Li G. Detection accuracy of root fractures in cone-beam computed tomography images: a systematic review and meta-analysis. Int Endod J 2015; 49:646-54. [PMID: 26102215 DOI: 10.1111/iej.12490] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 06/19/2015] [Indexed: 11/30/2022]
Affiliation(s)
- R. H. Ma
- Department of Oral and Maxillofacial Radiology; Peking University School and Hospital of Stomatology; Beijing China
| | - Z. P. Ge
- Department of Oral and Maxillofacial Radiology; Peking University School and Hospital of Stomatology; Beijing China
| | - G. Li
- Department of Oral and Maxillofacial Radiology; Peking University School and Hospital of Stomatology; Beijing China
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25
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The Diagnostic Efficacy of Cone-beam Computed Tomography in Endodontics: A Systematic Review and Analysis by a Hierarchical Model of Efficacy. J Endod 2015; 41:1008-14. [DOI: 10.1016/j.joen.2015.02.021] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 02/05/2015] [Accepted: 02/14/2015] [Indexed: 01/21/2023]
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26
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de Rezende Barbosa GL, Sousa Melo SL, Alencar PNB, Nascimento MCC, Almeida SM. Performance of an artefact reduction algorithm in the diagnosis ofin vitrovertical root fracture in four different root filling conditions on CBCT images. Int Endod J 2015; 49:500-8. [DOI: 10.1111/iej.12477] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Accepted: 05/26/2015] [Indexed: 11/30/2022]
Affiliation(s)
- G. L. de Rezende Barbosa
- Division of Radiology; Department of Oral Diagnosis; Piracicaba Dental School; University of Campinas; São Paulo Brazil
| | - S. L. Sousa Melo
- Department of Oral Pathology, Radiology and Medicine; University of Iowa College of Dentistry; Iowa City IA USA
| | - P. N. B. Alencar
- Division of Radiology; Department of Oral Diagnosis; Piracicaba Dental School; University of Campinas; São Paulo Brazil
| | - M. C. C. Nascimento
- Division of Radiology; Department of Oral Diagnosis; Piracicaba Dental School; University of Campinas; São Paulo Brazil
| | - S. M. Almeida
- Division of Radiology; Department of Oral Diagnosis; Piracicaba Dental School; University of Campinas; São Paulo Brazil
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27
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Bezerra ISQ, Neves FS, Vasconcelos TV, Ambrosano GMB, Freitas DQ. Influence of the artefact reduction algorithm of Picasso Trio CBCT system on the diagnosis of vertical root fractures in teeth with metal posts. Dentomaxillofac Radiol 2015; 44:20140428. [PMID: 25764360 DOI: 10.1259/dmfr.20140428] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVES To assess the influence of the artefact reduction algorithm (AR) available on the Picasso Trio 3D(®) imaging system (Vatech, Hwaseong, Republic of Korea) on image quality [greyscale values, contrast-to-noise ratio (CNR) and artefact formation] and diagnosis of vertical root fractures (VRFs) in the teeth with intracanal metal posts. METHODS 30 uniradicular teeth had their crowns removed and their roots endodontically treated to receive intracanal metal posts. In 20 teeth, both complete (n = 10) and incomplete (n = 10) VRFs were created. Each tooth was scanned twice, with and without AR activation. The mean and variation of greyscale values, as well as CNR, were calculated for all images. Subsequently, an evaluator compared the amount of artefact (cupping, white streaks and dark bands) in all images. Five evaluators rated for VRF presence using a five-point scale. RESULTS Mean greyscale values and CNR were significantly decreased in images acquired with the AR. The usage of the algorithm promoted an overall reduction of image artefacts. Regarding the diagnosis of complete and incomplete VRFs, the use of the AR had an overall negative impact on specificity and accuracy. CONCLUSIONS While indeed reducing artefact formation, the use of the AR, instead of improving the impact on the diagnosis of VRFs in teeth with intracanal metal posts, had a negative impact on the diagnosis.
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Affiliation(s)
- I S Q Bezerra
- 1 Oral Radiology Area, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil
| | - F S Neves
- 1 Oral Radiology Area, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil
| | - T V Vasconcelos
- 1 Oral Radiology Area, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil
| | - G M B Ambrosano
- 2 Department of Community Dentistry, Dental School of Piracicaba, State University of Campinas, Piracicaba, São Paulo, Brazil
| | - D Q Freitas
- 1 Oral Radiology Area, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil
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28
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Vasconcelos KF, Nicolielo LFP, Nascimento MC, Haiter-Neto F, Bóscolo FN, Van Dessel J, EzEldeen M, Lambrichts I, Jacobs R. Artefact expression associated with several cone-beam computed tomographic machines when imaging root filled teeth. Int Endod J 2014; 48:994-1000. [DOI: 10.1111/iej.12395] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 10/08/2014] [Indexed: 11/30/2022]
Affiliation(s)
- K. F. Vasconcelos
- OMFS IMPATH Research Group; Department of Imaging & Pathology; Faculty of Medicine; University of Leuven and Oral & Maxillofacial Surgery; University Hospitals Leuven; Leuven Belgium
- Department of Oral Diagnosis; Division of Oral Radiology; Piracicaba Dental School; State University of Campinas; Piracicaba Brazil
| | - L. F. P. Nicolielo
- OMFS IMPATH Research Group; Department of Imaging & Pathology; Faculty of Medicine; University of Leuven and Oral & Maxillofacial Surgery; University Hospitals Leuven; Leuven Belgium
| | - M. C. Nascimento
- OMFS IMPATH Research Group; Department of Imaging & Pathology; Faculty of Medicine; University of Leuven and Oral & Maxillofacial Surgery; University Hospitals Leuven; Leuven Belgium
- Department of Oral Diagnosis; Division of Oral Radiology; Piracicaba Dental School; State University of Campinas; Piracicaba Brazil
| | - F. Haiter-Neto
- Department of Oral Diagnosis; Division of Oral Radiology; Piracicaba Dental School; State University of Campinas; Piracicaba Brazil
| | - F. N. Bóscolo
- Department of Oral Diagnosis; Division of Oral Radiology; Piracicaba Dental School; State University of Campinas; Piracicaba Brazil
| | - J. Van Dessel
- OMFS IMPATH Research Group; Department of Imaging & Pathology; Faculty of Medicine; University of Leuven and Oral & Maxillofacial Surgery; University Hospitals Leuven; Leuven Belgium
| | - M. EzEldeen
- OMFS IMPATH Research Group; Department of Imaging & Pathology; Faculty of Medicine; University of Leuven and Oral & Maxillofacial Surgery; University Hospitals Leuven; Leuven Belgium
| | - I. Lambrichts
- Biomedical Research Institute; Laboratory of Morphology; Hasselt University; Diepenbeek Belgium
| | - R. Jacobs
- OMFS IMPATH Research Group; Department of Imaging & Pathology; Faculty of Medicine; University of Leuven and Oral & Maxillofacial Surgery; University Hospitals Leuven; Leuven Belgium
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29
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Komatsu K, Abe Y, Yoshioka T, Ishimura H, Ebihara A, Suda H. Differential diagnosis of vertical root fractures using reconstructed three-dimensional models of bone defects. Dentomaxillofac Radiol 2014; 43:20140256. [PMID: 25245201 DOI: 10.1259/dmfr.20140256] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES The purpose of this study was to evaluate the accuracy of diagnosing vertical root fractures (VRFs) by comparing the volume of bone defects in VRFs with those in non-VRFs on reconstructed three-dimensional (3D) models (TDMs) using CBCT. METHODS 32 maxillary pre-molars and anterior teeth with radiolucent areas were evaluated on pre-operative CBCT images. Of the 32 teeth, 16 had a fractured root (VRF group) and 16 had a non-fractured root (non-VRF group). The radiolucent area of each tooth was traced in each dimension [mesiodistal, buccolingual and horizontal (the apicoincisal aspect)] by two observers, and 3D images were reconstructed with the Amira(®) software (Visage Imaging Inc., Richmond, Australia). The volume, V, of the TDM was divided into the coronal side and the periapical side at the horizontal slice through the apical foramen, and v was defined as the volume of the coronal side. The values of v/V were calculated for all cases. The Mann-Whitney U test was used to compare values between the VRF group and the non-VRF group (p < 0.05). A receiver operating characteristic (ROC) curve was constructed to select the optimal cut-point. RESULTS There was a statistically significant difference in the value of v/V between the two groups (p < 0.05). With a cut-point derived from the ROC curve, and the sensitivity, specificity and accuracy of predicting the VRFs were 1.00, 0.75 and 0.88, respectively. CONCLUSIONS Lesions resulting from VRFs can be distinguished from those of non-VRFs on 3D CBCT images with a high degree of accuracy, based on their different 3D shapes.
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Affiliation(s)
- K Komatsu
- Department of Pulp Biology and Endodontics, Division of Oral Health Sciences, Medical and Dental Sciences Track, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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