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Evaluation and comparison of the marginal adaptation of two different substructure materials

PURPOSE: In this study, we aimed to evaluate the amount of marginal gap with two different substructure materials using identical margin preparations. MATERIALS AND METHODS: Twenty stainless steel models with a chamfer were prepared with a CNC device. Marginal gap measurements of the galvano copings...

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Autores principales: Karaman, Tahir, Ulku, Sabiha Zelal, Zengingul, Ali Ihsan, Guven, Sedat, Eratilla, Veysel, Sumer, Ebru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Academy of Prosthodontics 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4486622/
https://www.ncbi.nlm.nih.gov/pubmed/26140178
http://dx.doi.org/10.4047/jap.2015.7.3.257
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author Karaman, Tahir
Ulku, Sabiha Zelal
Zengingul, Ali Ihsan
Guven, Sedat
Eratilla, Veysel
Sumer, Ebru
author_facet Karaman, Tahir
Ulku, Sabiha Zelal
Zengingul, Ali Ihsan
Guven, Sedat
Eratilla, Veysel
Sumer, Ebru
author_sort Karaman, Tahir
collection PubMed
description PURPOSE: In this study, we aimed to evaluate the amount of marginal gap with two different substructure materials using identical margin preparations. MATERIALS AND METHODS: Twenty stainless steel models with a chamfer were prepared with a CNC device. Marginal gap measurements of the galvano copings on these stainless steel models and Co-Cr copings obtained by a laser-sintering method were made with a stereomicroscope device before and after the cementation process and surface properties were evaluated by scanning electron microscopy (SEM). A dependent t-test was used to compare the mean of the two groups for normally distributed data, and two-way variance analysis was used for more than two data sets. Pearson's correlation analysis was also performed to assess relationships between variables. RESULTS: According to the results obtained, the marginal gap in the galvano copings before cementation was measured as, on average, 24.47 ± 5.82 µm before and 35.11 ± 6.52 µm after cementation; in the laser-sintered Co-Cr structure, it was, on average, 60.45 ± 8.87 µm before and 69.33 ± 9.03 µm after cementation. A highly significant difference (P<.001) was found in marginal gap measurements of galvano copings and a significant difference (P<.05) was found in marginal gap measurements of the laser-sintered Co-Cr copings. According to the SEM examination, surface properties of laser sintered Co-Cr copings showed rougher structure than galvano copings. The galvano copings showed a very smooth surface. CONCLUSION: Marginal gaps values of both groups before and after cementation were within the clinically acceptable level. The smallest marginal gaps occurred with the use of galvano copings.
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spelling pubmed-44866222015-07-02 Evaluation and comparison of the marginal adaptation of two different substructure materials Karaman, Tahir Ulku, Sabiha Zelal Zengingul, Ali Ihsan Guven, Sedat Eratilla, Veysel Sumer, Ebru J Adv Prosthodont Original Article PURPOSE: In this study, we aimed to evaluate the amount of marginal gap with two different substructure materials using identical margin preparations. MATERIALS AND METHODS: Twenty stainless steel models with a chamfer were prepared with a CNC device. Marginal gap measurements of the galvano copings on these stainless steel models and Co-Cr copings obtained by a laser-sintering method were made with a stereomicroscope device before and after the cementation process and surface properties were evaluated by scanning electron microscopy (SEM). A dependent t-test was used to compare the mean of the two groups for normally distributed data, and two-way variance analysis was used for more than two data sets. Pearson's correlation analysis was also performed to assess relationships between variables. RESULTS: According to the results obtained, the marginal gap in the galvano copings before cementation was measured as, on average, 24.47 ± 5.82 µm before and 35.11 ± 6.52 µm after cementation; in the laser-sintered Co-Cr structure, it was, on average, 60.45 ± 8.87 µm before and 69.33 ± 9.03 µm after cementation. A highly significant difference (P<.001) was found in marginal gap measurements of galvano copings and a significant difference (P<.05) was found in marginal gap measurements of the laser-sintered Co-Cr copings. According to the SEM examination, surface properties of laser sintered Co-Cr copings showed rougher structure than galvano copings. The galvano copings showed a very smooth surface. CONCLUSION: Marginal gaps values of both groups before and after cementation were within the clinically acceptable level. The smallest marginal gaps occurred with the use of galvano copings. The Korean Academy of Prosthodontics 2015-06 2015-06-23 /pmc/articles/PMC4486622/ /pubmed/26140178 http://dx.doi.org/10.4047/jap.2015.7.3.257 Text en © 2015 The Korean Academy of Prosthodontics http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Karaman, Tahir
Ulku, Sabiha Zelal
Zengingul, Ali Ihsan
Guven, Sedat
Eratilla, Veysel
Sumer, Ebru
Evaluation and comparison of the marginal adaptation of two different substructure materials
title Evaluation and comparison of the marginal adaptation of two different substructure materials
title_full Evaluation and comparison of the marginal adaptation of two different substructure materials
title_fullStr Evaluation and comparison of the marginal adaptation of two different substructure materials
title_full_unstemmed Evaluation and comparison of the marginal adaptation of two different substructure materials
title_short Evaluation and comparison of the marginal adaptation of two different substructure materials
title_sort evaluation and comparison of the marginal adaptation of two different substructure materials
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4486622/
https://www.ncbi.nlm.nih.gov/pubmed/26140178
http://dx.doi.org/10.4047/jap.2015.7.3.257
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