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How adjustment could affect internal and marginal adaptation of CAD/CAM crowns made with different materials

PURPOSE: Recently introduced hybrid and reinforced glass ceramic computer-aided design/computer-aided manufacturing (CAD/CAM) materials have been used for full-coverage restorations. However; the effect of adjustment and type of materials on internal and marginal adaptation are unknown. This study a...

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Autores principales: Hasanzade, Mahya, Moharrami, Mohammad, Alikhasi, Marzieh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Academy of Prosthodontics 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7790605/
https://www.ncbi.nlm.nih.gov/pubmed/33489018
http://dx.doi.org/10.4047/jap.2020.12.6.344
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author Hasanzade, Mahya
Moharrami, Mohammad
Alikhasi, Marzieh
author_facet Hasanzade, Mahya
Moharrami, Mohammad
Alikhasi, Marzieh
author_sort Hasanzade, Mahya
collection PubMed
description PURPOSE: Recently introduced hybrid and reinforced glass ceramic computer-aided design/computer-aided manufacturing (CAD/CAM) materials have been used for full-coverage restorations. However; the effect of adjustment and type of materials on internal and marginal adaptation are unknown. This study aimed to evaluate and compare the marginal and internal adaptations of crowns made of three different CAD/CAM materials before and after adjustment. MATERIALS AND METHODS: One acrylic resin maxillary first molar was prepared and served as the master die. Thirty-six restorations were fabricated using CAD/CAM system (CEREC Omnicam, MCXL) with three materials including lithium disilicate (IPS e.max CAD), zirconia-reinforced lithium silicate (Suprinity), and hybrid ceramic (Enamic). Internal and marginal adaptations were evaluated with the reference point matching technique before and after adjustment. The data were analyzed using mixed ANOVA considering α=.05 as the significance level. RESULTS: The effect of adjustment and its interaction with the restoration material were significant for marginal, absolute marginal, and occlusal discrepancies (P<.05). Before adjustment, Suprinity had lower marginal discrepancies than IPS e.max CAD (P=.18) and Enamic (P=.021); though no significant differences existed after adjustment. CONCLUSION: Within the limitations of this study, crowns fabricated from IPS e.max CAD and Suprinity resulted in slightly better adaptation compared with Enamic crowns before adjustment. However, marginal, axial, and occlusal discrepancies were similar among all materials after the adjustment.
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spelling pubmed-77906052021-01-21 How adjustment could affect internal and marginal adaptation of CAD/CAM crowns made with different materials Hasanzade, Mahya Moharrami, Mohammad Alikhasi, Marzieh J Adv Prosthodont Original Article PURPOSE: Recently introduced hybrid and reinforced glass ceramic computer-aided design/computer-aided manufacturing (CAD/CAM) materials have been used for full-coverage restorations. However; the effect of adjustment and type of materials on internal and marginal adaptation are unknown. This study aimed to evaluate and compare the marginal and internal adaptations of crowns made of three different CAD/CAM materials before and after adjustment. MATERIALS AND METHODS: One acrylic resin maxillary first molar was prepared and served as the master die. Thirty-six restorations were fabricated using CAD/CAM system (CEREC Omnicam, MCXL) with three materials including lithium disilicate (IPS e.max CAD), zirconia-reinforced lithium silicate (Suprinity), and hybrid ceramic (Enamic). Internal and marginal adaptations were evaluated with the reference point matching technique before and after adjustment. The data were analyzed using mixed ANOVA considering α=.05 as the significance level. RESULTS: The effect of adjustment and its interaction with the restoration material were significant for marginal, absolute marginal, and occlusal discrepancies (P<.05). Before adjustment, Suprinity had lower marginal discrepancies than IPS e.max CAD (P=.18) and Enamic (P=.021); though no significant differences existed after adjustment. CONCLUSION: Within the limitations of this study, crowns fabricated from IPS e.max CAD and Suprinity resulted in slightly better adaptation compared with Enamic crowns before adjustment. However, marginal, axial, and occlusal discrepancies were similar among all materials after the adjustment. The Korean Academy of Prosthodontics 2020-12 2020-12-28 /pmc/articles/PMC7790605/ /pubmed/33489018 http://dx.doi.org/10.4047/jap.2020.12.6.344 Text en © 2020 The Korean Academy of Prosthodontics http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Hasanzade, Mahya
Moharrami, Mohammad
Alikhasi, Marzieh
How adjustment could affect internal and marginal adaptation of CAD/CAM crowns made with different materials
title How adjustment could affect internal and marginal adaptation of CAD/CAM crowns made with different materials
title_full How adjustment could affect internal and marginal adaptation of CAD/CAM crowns made with different materials
title_fullStr How adjustment could affect internal and marginal adaptation of CAD/CAM crowns made with different materials
title_full_unstemmed How adjustment could affect internal and marginal adaptation of CAD/CAM crowns made with different materials
title_short How adjustment could affect internal and marginal adaptation of CAD/CAM crowns made with different materials
title_sort how adjustment could affect internal and marginal adaptation of cad/cam crowns made with different materials
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7790605/
https://www.ncbi.nlm.nih.gov/pubmed/33489018
http://dx.doi.org/10.4047/jap.2020.12.6.344
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