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The Effect of Laboratory Procedures and Repeated-glazing on Color of Metal-ceramic Restoration

BACKGROUND: Routine laboratory procedures and repeated glazed effect the final color of metal-ceramic restorations (MCRs). Clinicians wonder if the color changes after routine laboratory procedures and repeated glazed is clinically acceptable or not. AIMS: The aim of this study was to determine the...

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Autores principales: Özdemir, Hatice, Duymus, Zeynep Yesil
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Wolters Kluwer - Medknow 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7145238/
https://www.ncbi.nlm.nih.gov/pubmed/32308284
http://dx.doi.org/10.4103/ccd.ccd_411_18
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author Özdemir, Hatice
Duymus, Zeynep Yesil
author_facet Özdemir, Hatice
Duymus, Zeynep Yesil
author_sort Özdemir, Hatice
collection PubMed
description BACKGROUND: Routine laboratory procedures and repeated glazed effect the final color of metal-ceramic restorations (MCRs). Clinicians wonder if the color changes after routine laboratory procedures and repeated glazed is clinically acceptable or not. AIMS: The aim of this study was to determine the color changes of MCRs after routine laboratory procedures and then glazed for 1, 2, and 3 times. MATERIALS AND METHODS: Forty-five disc-shaped (10-mm diameter and 1-mm thickness) specimens were fabricated from Cr-Co metal-alloy. Bonding agent, first and second layer of shade A(2) opaque porcelain (OP) were applied on the metal specimens. The color of specimens was measured with a spectrophotometer after each procedure and △E(1), △E(2,) and △E(3) values were calculated. Shade A(2) feldspathic porcelain was applied (2-mm thickness) to all specimens. Glaze was applied on the porcelain for 1, 2, and 3 times and then, the color measured after each procedure and △E(4), △E(5), and △E(6) values were calculated. Data were analyzed with one-way ANOVA and Duncan test (P < 0.05). RESULTS: △E(1) that was obtained between the first layer of OP and bonding agent showed the greatest value. △E(2) that was obtained between the second and first layer of OP showed the lowest value. After repeated glazed procedures, the final color of the specimens was changed; but, these changes were clinically acceptable (△E < 5.5). CONCLUSIONS: The routine laboratory procedures and glazed for 1,2, and 3 times is effect the color of MCRs; but, the color changes were clinically acceptable (△E < 5.5).
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spelling pubmed-71452382020-04-17 The Effect of Laboratory Procedures and Repeated-glazing on Color of Metal-ceramic Restoration Özdemir, Hatice Duymus, Zeynep Yesil Contemp Clin Dent Original Article BACKGROUND: Routine laboratory procedures and repeated glazed effect the final color of metal-ceramic restorations (MCRs). Clinicians wonder if the color changes after routine laboratory procedures and repeated glazed is clinically acceptable or not. AIMS: The aim of this study was to determine the color changes of MCRs after routine laboratory procedures and then glazed for 1, 2, and 3 times. MATERIALS AND METHODS: Forty-five disc-shaped (10-mm diameter and 1-mm thickness) specimens were fabricated from Cr-Co metal-alloy. Bonding agent, first and second layer of shade A(2) opaque porcelain (OP) were applied on the metal specimens. The color of specimens was measured with a spectrophotometer after each procedure and △E(1), △E(2,) and △E(3) values were calculated. Shade A(2) feldspathic porcelain was applied (2-mm thickness) to all specimens. Glaze was applied on the porcelain for 1, 2, and 3 times and then, the color measured after each procedure and △E(4), △E(5), and △E(6) values were calculated. Data were analyzed with one-way ANOVA and Duncan test (P < 0.05). RESULTS: △E(1) that was obtained between the first layer of OP and bonding agent showed the greatest value. △E(2) that was obtained between the second and first layer of OP showed the lowest value. After repeated glazed procedures, the final color of the specimens was changed; but, these changes were clinically acceptable (△E < 5.5). CONCLUSIONS: The routine laboratory procedures and glazed for 1,2, and 3 times is effect the color of MCRs; but, the color changes were clinically acceptable (△E < 5.5). Wolters Kluwer - Medknow 2019 /pmc/articles/PMC7145238/ /pubmed/32308284 http://dx.doi.org/10.4103/ccd.ccd_411_18 Text en Copyright: © 2020 Contemporary Clinical Dentistry http://creativecommons.org/licenses/by-nc-sa/4.0 This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
spellingShingle Original Article
Özdemir, Hatice
Duymus, Zeynep Yesil
The Effect of Laboratory Procedures and Repeated-glazing on Color of Metal-ceramic Restoration
title The Effect of Laboratory Procedures and Repeated-glazing on Color of Metal-ceramic Restoration
title_full The Effect of Laboratory Procedures and Repeated-glazing on Color of Metal-ceramic Restoration
title_fullStr The Effect of Laboratory Procedures and Repeated-glazing on Color of Metal-ceramic Restoration
title_full_unstemmed The Effect of Laboratory Procedures and Repeated-glazing on Color of Metal-ceramic Restoration
title_short The Effect of Laboratory Procedures and Repeated-glazing on Color of Metal-ceramic Restoration
title_sort effect of laboratory procedures and repeated-glazing on color of metal-ceramic restoration
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7145238/
https://www.ncbi.nlm.nih.gov/pubmed/32308284
http://dx.doi.org/10.4103/ccd.ccd_411_18
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