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Influence of Manufacturing Methods of Implant-Supported Crowns on External and Internal Marginal Fit: A Micro-CT Analysis

AIM: To evaluate the influence of different manufacturing methods of single implant-supported metallic crowns on the internal and external marginal fit through computed microtomography. METHODS: Forty external hexagon implants were divided into 4 groups (n = 8), according to the manufacturing method...

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Autores principales: Moris, Izabela C. M., Monteiro, Silas Borges, Martins, Raíssa, Ribeiro, Ricardo Faria, Gomes, Erica A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5828102/
https://www.ncbi.nlm.nih.gov/pubmed/29607321
http://dx.doi.org/10.1155/2018/5049605
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author Moris, Izabela C. M.
Monteiro, Silas Borges
Martins, Raíssa
Ribeiro, Ricardo Faria
Gomes, Erica A.
author_facet Moris, Izabela C. M.
Monteiro, Silas Borges
Martins, Raíssa
Ribeiro, Ricardo Faria
Gomes, Erica A.
author_sort Moris, Izabela C. M.
collection PubMed
description AIM: To evaluate the influence of different manufacturing methods of single implant-supported metallic crowns on the internal and external marginal fit through computed microtomography. METHODS: Forty external hexagon implants were divided into 4 groups (n = 8), according to the manufacturing method: GC, conventional casting; GI, induction casting; GP, plasma casting; and GCAD, CAD/CAM machining. The crowns were attached to the implants with insertion torque of 30 N·cm. The external (vertical and horizontal) marginal fit and internal fit were assessed through computed microtomography. Internal and external marginal fit data (μm) were submitted to a one-way ANOVA and Tukey's test (α = .05). Qualitative evaluation of the images was conducted by using micro-CT. RESULTS: The statistical analysis revealed no significant difference between the groups for vertical misfit (P = 0.721). There was no significant difference (P > 0.05) for the internal and horizontal marginal misfit in the groups GC, GI, and GP, but it was found for the group GCAD (P ≤ 0.05). Qualitative analysis revealed that most of the samples of cast groups exhibited crowns underextension while the group GCAD showed overextension. CONCLUSIONS: The manufacturing method of the crowns influenced the accuracy of marginal fit between the prosthesis and implant. The best results were found for the crowns fabricated through CAD/CAM machining.
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spelling pubmed-58281022018-04-01 Influence of Manufacturing Methods of Implant-Supported Crowns on External and Internal Marginal Fit: A Micro-CT Analysis Moris, Izabela C. M. Monteiro, Silas Borges Martins, Raíssa Ribeiro, Ricardo Faria Gomes, Erica A. Biomed Res Int Research Article AIM: To evaluate the influence of different manufacturing methods of single implant-supported metallic crowns on the internal and external marginal fit through computed microtomography. METHODS: Forty external hexagon implants were divided into 4 groups (n = 8), according to the manufacturing method: GC, conventional casting; GI, induction casting; GP, plasma casting; and GCAD, CAD/CAM machining. The crowns were attached to the implants with insertion torque of 30 N·cm. The external (vertical and horizontal) marginal fit and internal fit were assessed through computed microtomography. Internal and external marginal fit data (μm) were submitted to a one-way ANOVA and Tukey's test (α = .05). Qualitative evaluation of the images was conducted by using micro-CT. RESULTS: The statistical analysis revealed no significant difference between the groups for vertical misfit (P = 0.721). There was no significant difference (P > 0.05) for the internal and horizontal marginal misfit in the groups GC, GI, and GP, but it was found for the group GCAD (P ≤ 0.05). Qualitative analysis revealed that most of the samples of cast groups exhibited crowns underextension while the group GCAD showed overextension. CONCLUSIONS: The manufacturing method of the crowns influenced the accuracy of marginal fit between the prosthesis and implant. The best results were found for the crowns fabricated through CAD/CAM machining. Hindawi 2018-01-23 /pmc/articles/PMC5828102/ /pubmed/29607321 http://dx.doi.org/10.1155/2018/5049605 Text en Copyright © 2018 Izabela C. M. Moris et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Moris, Izabela C. M.
Monteiro, Silas Borges
Martins, Raíssa
Ribeiro, Ricardo Faria
Gomes, Erica A.
Influence of Manufacturing Methods of Implant-Supported Crowns on External and Internal Marginal Fit: A Micro-CT Analysis
title Influence of Manufacturing Methods of Implant-Supported Crowns on External and Internal Marginal Fit: A Micro-CT Analysis
title_full Influence of Manufacturing Methods of Implant-Supported Crowns on External and Internal Marginal Fit: A Micro-CT Analysis
title_fullStr Influence of Manufacturing Methods of Implant-Supported Crowns on External and Internal Marginal Fit: A Micro-CT Analysis
title_full_unstemmed Influence of Manufacturing Methods of Implant-Supported Crowns on External and Internal Marginal Fit: A Micro-CT Analysis
title_short Influence of Manufacturing Methods of Implant-Supported Crowns on External and Internal Marginal Fit: A Micro-CT Analysis
title_sort influence of manufacturing methods of implant-supported crowns on external and internal marginal fit: a micro-ct analysis
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5828102/
https://www.ncbi.nlm.nih.gov/pubmed/29607321
http://dx.doi.org/10.1155/2018/5049605
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