Optimization of Tube Current in Cone-beam Computed Tomography for the Detection of Vertical Root Fractures with Different Intracanal Materials. 2017

Hugo Gaêta-Araujo, and Gabriela Queiroz Silva de Souza, and Deborah Queiroz Freitas, and Christiano de Oliveira-Santos
Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil.

BACKGROUND There is no consensus about the accuracy of cone-beam computed tomography (CBCT) for detecting vertical root fractures (VRFs), nor is there certainty about the isolated effect of different tube current parameters on the diagnosis of VRF through CBCT scans. This study aimed to evaluate how tube current affects the detection of VRF on CBCT examinations in the absence of intracanal materials and in the presence of gutta-percha (GP) and metal (MP) or fiberglass (FP) intracanal posts. METHODS The sample consisted of 320 CBCT scans of tooth roots with and without VRF divided into 8 groups: no fracture/no intracanal material; no fracture + GP; no fracture + MP; no fracture + FP; fracture/no intracanal material; fracture + GP; fracture + MP; fracture + FP. The scans were acquired with an OP300 unit using 4 different milliamperes (4 mA, 8 mA, 10 mA, 13 mA). Five oral radiologists analyzed the images. The area under the receiver operating characteristic curve (Az), sensitivity, specificity, positive and negative predictive values, and interobserver agreement were calculated. RESULTS Diagnostic performance for the different milliamperes tested was similar for teeth without root filling materials or with FP. Teeth with GP and MP showed the highest Az values for 8 mA and 10 mA, respectively. For teeth with MP, specificity was significantly higher when 10 mA was used. CONCLUSIONS For teeth without root filling materials or with FP, the use of a reduced milliampere does not seem to influence the detection of VRF in a significant manner. For teeth with GP and MP, an increased milliampere may lead to increased diagnostic performance.

UI MeSH Term Description Entries
D006171 Gutta-Percha Coagulated exudate isolated from several species of the tropical tree Palaquium (Sapotaceae). It is the trans-isomer of natural rubber and is used as a filling and impression material in dentistry and orthopedics and as an insulator in electronics. It has also been used as a rubber substitute. Thermafil,Guttapercha,Ultrafil,Gutta Percha
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012372 ROC Curve A graphic means for assessing the ability of a screening test to discriminate between healthy and diseased persons; may also be used in other studies, e.g., distinguishing stimuli responses as to a faint stimuli or nonstimuli. ROC Analysis,Receiver Operating Characteristic,Analysis, ROC,Analyses, ROC,Characteristic, Receiver Operating,Characteristics, Receiver Operating,Curve, ROC,Curves, ROC,ROC Analyses,ROC Curves,Receiver Operating Characteristics
D012387 Root Canal Filling Materials Materials placed inside a root canal for the purpose of obturating or sealing it. The materials may be gutta-percha, silver cones, paste mixtures, or other substances. (Dorland, 28th ed, p631 & Boucher's Clinical Dental Terminology, 4th ed, p187) Root Canal Filling Material,Root Canal Sealants,Sealants, Root Canal,Canal Sealant, Root,Canal Sealants, Root,Root Canal Sealant,Sealant, Root Canal
D012389 Root Canal Obturation Phase of endodontic treatment in which a root canal system that has been cleaned is filled through use of special materials and techniques in order to prevent reinfection. Endodontic Obturation,Canal Obturation, Root,Canal Obturations, Root,Endodontic Obturations,Obturation, Endodontic,Obturation, Root Canal,Obturations, Endodontic,Obturations, Root Canal,Root Canal Obturations
D012680 Sensitivity and Specificity Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed) Specificity,Sensitivity,Specificity and Sensitivity
D014082 Tooth Fractures Break or rupture of a tooth or tooth root. Fracture, Tooth,Fractures, Tooth,Tooth Fracture
D014092 Tooth Root The part of a tooth from the neck to the apex, embedded in the alveolar process and covered with cementum. A root may be single or divided into several branches, usually identified by their relative position, e.g., lingual root or buccal root. Single-rooted teeth include mandibular first and second premolars and the maxillary second premolar teeth. The maxillary first premolar has two roots in most cases. Maxillary molars have three roots. (Jablonski, Dictionary of Dentistry, 1992, p690) Root, Tooth,Roots, Tooth,Tooth Roots
D054893 Cone-Beam Computed Tomography Computed tomography modalities which use a cone or pyramid-shaped beam of radiation. CAT Scan, Cone-Beam,Cone-Beam CT,Tomography, Cone-Beam Computed,Tomography, Volume Computed,CT Scan, Cone-Beam,Cone-Beam Computer-Assisted Tomography,Cone-Beam Computerized Tomography,Volume CT,Volume Computed Tomography,Volumetric CT,Volumetric Computed Tomography,CAT Scan, Cone Beam,CAT Scans, Cone-Beam,CT Scan, Cone Beam,CT Scans, Cone-Beam,CT, Cone-Beam,CT, Volume,CT, Volumetric,Computed Tomography, Cone-Beam,Computed Tomography, Volume,Computed Tomography, Volumetric,Computer-Assisted Tomography, Cone-Beam,Computerized Tomography, Cone-Beam,Cone Beam CT,Cone Beam Computed Tomography,Cone Beam Computer Assisted Tomography,Cone Beam Computerized Tomography,Cone-Beam CAT Scan,Cone-Beam CAT Scans,Cone-Beam CT Scan,Cone-Beam CT Scans,Scan, Cone-Beam CAT,Scan, Cone-Beam CT,Scans, Cone-Beam CAT,Scans, Cone-Beam CT,Tomography, Cone Beam Computed,Tomography, Cone-Beam Computer-Assisted,Tomography, Cone-Beam Computerized,Tomography, Volumetric Computed

Related Publications

Hugo Gaêta-Araujo, and Gabriela Queiroz Silva de Souza, and Deborah Queiroz Freitas, and Christiano de Oliveira-Santos
July 2017, Journal of endodontics,
Hugo Gaêta-Araujo, and Gabriela Queiroz Silva de Souza, and Deborah Queiroz Freitas, and Christiano de Oliveira-Santos
April 2023, Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences,
Hugo Gaêta-Araujo, and Gabriela Queiroz Silva de Souza, and Deborah Queiroz Freitas, and Christiano de Oliveira-Santos
September 2023, Australian endodontic journal : the journal of the Australian Society of Endodontology Inc,
Hugo Gaêta-Araujo, and Gabriela Queiroz Silva de Souza, and Deborah Queiroz Freitas, and Christiano de Oliveira-Santos
January 2010, Journal of endodontics,
Hugo Gaêta-Araujo, and Gabriela Queiroz Silva de Souza, and Deborah Queiroz Freitas, and Christiano de Oliveira-Santos
September 2018, Imaging science in dentistry,
Hugo Gaêta-Araujo, and Gabriela Queiroz Silva de Souza, and Deborah Queiroz Freitas, and Christiano de Oliveira-Santos
December 2013, Journal of endodontics,
Hugo Gaêta-Araujo, and Gabriela Queiroz Silva de Souza, and Deborah Queiroz Freitas, and Christiano de Oliveira-Santos
June 2011, Journal of endodontics,
Hugo Gaêta-Araujo, and Gabriela Queiroz Silva de Souza, and Deborah Queiroz Freitas, and Christiano de Oliveira-Santos
February 2023, Dento maxillo facial radiology,
Hugo Gaêta-Araujo, and Gabriela Queiroz Silva de Souza, and Deborah Queiroz Freitas, and Christiano de Oliveira-Santos
February 2020, Journal of endodontics,
Hugo Gaêta-Araujo, and Gabriela Queiroz Silva de Souza, and Deborah Queiroz Freitas, and Christiano de Oliveira-Santos
May 2009, Journal of endodontics,
Copied contents to your clipboard!