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Optimization of Tube Current in Cone-beam Computed Tomography for the Detection of Vertical Root Fractures with Different Intracanal Materials.
Gaêta-Araujo, Hugo; Silva de Souza, Gabriela Queiroz; Freitas, Deborah Queiroz; de Oliveira-Santos, Christiano.
Afiliação
  • Gaêta-Araujo H; Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil.
  • Silva de Souza GQ; Department of Stomatology, Public Oral Health, and Forensic Dentistry School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil.
  • Freitas DQ; Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil.
  • de Oliveira-Santos C; Department of Stomatology, Public Oral Health, and Forensic Dentistry School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil. Electronic address: oliveirach@usp.br.
J Endod ; 43(10): 1668-1673, 2017 Oct.
Article em En | MEDLINE | ID: mdl-28673496
INTRODUCTION: 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.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fraturas dos Dentes / Raiz Dentária / Tomografia Computadorizada de Feixe Cônico Tipo de estudo: Diagnostic_studies / Evaluation_studies / Prognostic_studies Limite: Humans Idioma: En Revista: J Endod Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
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XML
PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fraturas dos Dentes / Raiz Dentária / Tomografia Computadorizada de Feixe Cônico Tipo de estudo: Diagnostic_studies / Evaluation_studies / Prognostic_studies Limite: Humans Idioma: En Revista: J Endod Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos