Restorative Dentistry and Endodontics

  • 제48권2호
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  • Pages.16.1-16.11
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  • 2023
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  • 2234-7658(pISSN)
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  • 2234-7666(eISSN)
대한치과보존학회 (The Korean Academy of Conservative Dentistry)
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Influence of CBCT parameters on image quality and the diagnosis of vertical root fractures in teeth with metallic posts: an ex vivo study

  • Larissa Pereira Lagos de Melo (Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas) ;
  • Polyane Mazucatto Queiroz (Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas) ;
  • Larissa Moreira-Souza (Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas) ;
  • Mariana Rocha Nadaes (Dental Clinic Department, Division of Oral Radiology, Dental School, Federal Fluminense University) ;
  • Gustavo Machado Santaella (Department of Diagnosis and Oral Health, University of Louisville, School of Dentistry) ;
  • Matheus Lima Oliveira (Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas) ;
  • Deborah Queiroz Freitas (Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas)
  • 투고 : 2022.12.09
  • 심사 : 2023.02.24
  • 발행 : 2023.05.31
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초록

Objectives: The aim of this study was to evaluate the influence of peak kilovoltage (kVp) and a metal artifact reduction (MAR) tool on image quality and the diagnosis of vertical root fracture (VRF) in cone-beam computed tomography (CBCT). Materials and Methods: Twenty single-rooted human teeth filled with an intracanal metal post were divided into 2 groups: control (n = 10) and VRF (n = 10). Each tooth was placed into the socket of a dry mandible, and CBCT scans were acquired using a Picasso Trio varying the kVp (70, 80, 90, or 99), and the use of MAR (with or without). The examinations were assessed by 5 examiners for the diagnosis of VRF using a 5-point scale. A subjective evaluation of the expression of artifacts was done by comparing random axial images of the studied protocols. The results of the diagnoses were analyzed using 2-way analysis of variance and the Tukey post hoc test, the subjective evaluations were compared using the Friedman test, and intra-examiner reproducibility was evaluated using the weighted kappa test (α = 5%). Results: The kVp and MAR did not influence the diagnosis of VRF (p > 0.05). According to the subjective classification, the 99 kVp protocol with MAR demonstrated the least expression of artifacts, while the 70 kVp protocol without MAR led to the most artifacts. Conclusions: Protocols with higher kVp combined with MAR improved the image quality of CBCT examinations. However, those factors did not lead to an improvement in the diagnosis of VRF.

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과제정보

The authors would like to thank the examiners.

참고문헌

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