Amanda Pelegrin Candemil1, Francesca Mangione2,3, Karla Farias Vasconcelos4, Anne Caroline Oenning2,3,5, Reinhilde Jacobs4,6, Deborah Queiroz Freitas1, Francisco Haiter-Neto1, Benjamin Salmon2,3, Matheus Lima Oliveira1. 1. Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil. 2. Orofacial Pathologies, Imaging and Biotherapies Lab, Université de Paris, UR 2496, Montrouge, France. 3. Dental Medicine Departments, Bretonneau and Henri Mondor University Hospitals, AP-HP, Paris, France. 4. OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, Catholic University of Leuven, and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium. 5. Division of Oral Radiology, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, Sao Paulo, Brazil. 6. Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden.
Abstract
OBJECTIVES: To evaluate the influence of exomass-related metal artefacts on the detection of simulated vertical root fracture (VRF) in cone-beam computed tomography (CBCT). METHODS: 20 teeth were endodontically instrumented and VRF was induced in half of them. All teeth were individually placed in an empty socket of a human mandible. Metallic materials were differently arranged in the exomass [zone outside of the field of view (FOV) but between the X-ray source and the receptor] and/or endomass (zone inside of the FOV), and CBCT scans were obtained. Four radiologists evaluated the presence of VRF using a 5-point scale. Sensitivity, specificity, and area under the receiver operating curve (AUC) were compared using ANOVA. Also, the tooth of interest was replaced with a tube filled with a radiopaque solution and all CBCT scans were repeated to analyse the data objectively. Mean grey and noise values were obtained from the tube and compared using ANOVA followed by Tukey's test (α = 0.05). RESULTS: Mean grey values were significantly lower and noise was significantly higher when metallic materials were present in the endomass or both the exomass and endomass. Sensitivity, specificity, and AUC were not influenced by the artefacts from the metallic materials irrespective of the arrangement condition. CONCLUSIONS: Exomass-related metal artefacts did not influence the diagnosis of simulated VRF in CBCT.
OBJECTIVES: To evaluate the influence of exomass-related metal artefacts on the detection of simulated vertical root fracture (VRF) in cone-beam computed tomography (CBCT). METHODS: 20 teeth were endodontically instrumented and VRF was induced in half of them. All teeth were individually placed in an empty socket of a human mandible. Metallic materials were differently arranged in the exomass [zone outside of the field of view (FOV) but between the X-ray source and the receptor] and/or endomass (zone inside of the FOV), and CBCT scans were obtained. Four radiologists evaluated the presence of VRF using a 5-point scale. Sensitivity, specificity, and area under the receiver operating curve (AUC) were compared using ANOVA. Also, the tooth of interest was replaced with a tube filled with a radiopaque solution and all CBCT scans were repeated to analyse the data objectively. Mean grey and noise values were obtained from the tube and compared using ANOVA followed by Tukey's test (α = 0.05). RESULTS: Mean grey values were significantly lower and noise was significantly higher when metallic materials were present in the endomass or both the exomass and endomass. Sensitivity, specificity, and AUC were not influenced by the artefacts from the metallic materials irrespective of the arrangement condition. CONCLUSIONS: Exomass-related metal artefacts did not influence the diagnosis of simulated VRF in CBCT.
Authors: A F V Santos; J B C Meira; C B Tanaka; T A Xavier; R Y Ballester; R G Lima; C S Pfeifer; A Versluis Journal: J Dent Res Date: 2010-03-26 Impact factor: 6.116
Authors: H A R Nascimento; F S Neves; S L de-Azevedo-Vaz; T M Duque; G M B Ambrosano; D Q Freitas Journal: Int Endod J Date: 2014-10-20 Impact factor: 5.264
Authors: Anne Caroline Oenning; Benjamin Salmon; Karla de Faria Vasconcelos; Laura Ferreira Pinheiro Nicolielo; Ivo Lambrichts; Gerard Sanderink; Ruben Pauwels; Reinhilde Jacobs Journal: Dentomaxillofac Radiol Date: 2018-01-10 Impact factor: 2.419
Authors: Amanda P Candemil; Benjamin Salmon; Karla F Vasconcelos; Anne C Oenning; Reinhilde Jacobs; Deborah Q Freitas; Francisco Haiter-Neto; Francesca Mangione; Matheus L Oliveira Journal: Sci Rep Date: 2021-09-27 Impact factor: 4.379