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Piras FF, Ferruzzi F, Ferrairo BM, et al. Correlation between 2D and 3D measurements of cement space in CAD-CAM crowns. J Prosthet Dent. 2021;doi: 10.1016/j.prosdent.2020.08.051.
Piras, F. F., Ferruzzi, F., Ferrairo, B. M., Mosquim, V., Ramalho, I. S., Bonfante, E. A., & Rubo, J. H. (2021). Correlation between 2D and 3D measurements of cement space in CAD-CAM crowns. The Journal of prosthetic dentistry, . https://doi.org/10.1016/j.prosdent.2020.08.051
Piras, Fernanda Furtado, et al. "Correlation between 2D and 3D measurements of cement space in CAD-CAM crowns." The Journal of prosthetic dentistry vol. (2021). doi: https://doi.org/10.1016/j.prosdent.2020.08.051
Piras FF, Ferruzzi F, Ferrairo BM, Mosquim V, Ramalho IS, Bonfante EA, Rubo JH. Correlation between 2D and 3D measurements of cement space in CAD-CAM crowns. J Prosthet Dent. 2021 Mar 06; doi: 10.1016/j.prosdent.2020.08.051. Epub 2021 Mar 06. PMID: 33750574.
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J Prosthet Dent. 2021 Mar 06; doi: 10.1016/j.prosdent.2020.08.051. Epub 2021 Mar 06.

Correlation between 2D and 3D measurements of cement space in CAD-CAM crowns.

The Journal of prosthetic dentistry

Fernanda Furtado Piras, Fernanda Ferruzzi, Brunna Mota Ferrairo, Victor Mosquim, Ilana Santos Ramalho, Estevam Augusto Bonfante, José Henrique Rubo

Affiliations

  1. Professor, Department of Prosthodontics and Periodontics, Faculty of Dentistry, University of Marília (UNIMAR), Marília, São Paulo, Brazil; PhD, Department of Prosthodontics and Periodontics, Bauru Dental School, University of São Paulo (USP), Bauru, Brazil. Electronic address: [email protected].
  2. Professor, Department of Dentistry, Maringá University Center (UNINGÁ) and Maringa State University (UEM), Maringa, Brazil.
  3. Doctoral student, Department of Prosthodontics and Periodontics, Bauru Dental School, University of São Paulo (USP), Bauru, Brazil.
  4. Doctoral student, Department of Operative Dentistry, Endodontics and Dental Materials, Bauru Dental School, University of São Paulo (USP), Bauru, Brazil.
  5. PhD, Department of Prosthodontics and Periodontics, Bauru Dental School, University of São Paulo (USP), Bauru, Brazil.
  6. Professor, Department of Prosthodontics and Periodontics, Bauru Dental School, University of São Paulo (USP), Bauru, Brazil.

PMID: 33750574 DOI: 10.1016/j.prosdent.2020.08.051

Abstract

STATEMENT OF PROBLEM: Although the 2D analysis of prosthesis cementation space has been popular, its correlation with volumetric comparison (3D data) of cement space is unclear.

PURPOSE: The purpose of this in vitro study was to evaluate the cement space in computer-aided design and computer-aided manufacturing (CAD-CAM) crowns of different materials and correlate 2D measurements of cement space with their corresponding 3D values (volume of cement space) by using microcomputed tomography (μCT) analysis of regions of interest.

MATERIAL AND METHODS: Ten molar crowns were milled in lithium disilicate (LD), resin nanoceramic (RN), and zirconia (Z) ceramics. Silicone replicas were produced and used as the analog cement layer and scanned with a desktop X-ray microfocus CT scanner. Twenty-eight slices were evaluated in 3 regions: marginal, axial, and occlusal (n=84 measurement points/specimen). After 3D reconstruction of the cement space, the volume was calculated. Data were statistically evaluated through 2-way ANOVA and Bonferroni test (α=.05). The Pearson correlation test was used to investigate the correlation between the 2D and 3D data.

RESULTS: The volumes of the occlusal (LD 10 ±1 mm

CONCLUSIONS: Z showed more volume of cement space, as well as thicker cement space than LD and RN. The μCT analysis is an efficient method of analyzing cement thickness and volume in ceramic crowns at the selected regions of interest. A moderate positive correlation was found between the 2D and 3D analyses for the axial and marginal regions of ceramic crowns.

Copyright © 2021 Editorial Council for the Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.

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