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Comparison of shear bond strength of two veneering ceramics to zirconia
BACKGROUND: Chip-off fracture of veneering porcelain has been described as the most frequent reason for the failure of zirconia-based fixed partial dentures. The purpose of this study was to evaluate the shear bond strength (SBS) of two commercial zirconia core ceramics to their corresponding veneer...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications & Media Pvt Ltd
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3612203/ https://www.ncbi.nlm.nih.gov/pubmed/23559931 |
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author | Rismanchian, Mansour Shafiei, Soufia Askari, Navid Khodaeian, Niloufar |
author_facet | Rismanchian, Mansour Shafiei, Soufia Askari, Navid Khodaeian, Niloufar |
author_sort | Rismanchian, Mansour |
collection | PubMed |
description | BACKGROUND: Chip-off fracture of veneering porcelain has been described as the most frequent reason for the failure of zirconia-based fixed partial dentures. The purpose of this study was to evaluate the shear bond strength (SBS) of two commercial zirconia core ceramics to their corresponding veneering ceramics. MATERIALS AND METHODS: Zirconia disks with 7-mm diameter and 3-mm height were prepared (Cercon and Biodenta systems) and veneered with recommended layering ceramics (Cercon ceram and 2 in 1 ceramic, respectively) (n = 10). The disks were polished with diamond paste and airborne-particle abraded before layering. The specimens were mounted in a T-shaped metal holder using autopolymerized acrylic resin and stored in 37°C distilled water for one week, after which they were subjected to thermal cycling. SBS of zirconia core to veneering ceramic was measured using a universal testing machine and failure modes were determined microscopically. Data were analyzed using t test (α < 0.05). RESULTS: Mean (±SD) SBS values were 27.19(±3.43) and 28.22(±4.08) MPa for Cercon and Biodenta systems, respectively, with no significant difference. Biodenta system showed more adhesive failure compared to more combined (adhesive and cohesive) failures in Cercon system. CONCLUSION: Within the limitations of this study it can be concluded that SBS of Biodenta and Cercon specimens were nearly the same, but the fracture mode of these two systems were different. Since Biodenta fracture pattern was predominantly adhesive, it seems that maybe Biodenta porcelain was stronger than Cercon porcelain where as its adhesive bond was weaker. |
format | Online Article Text |
id | pubmed-3612203 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Medknow Publications & Media Pvt Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-36122032013-04-04 Comparison of shear bond strength of two veneering ceramics to zirconia Rismanchian, Mansour Shafiei, Soufia Askari, Navid Khodaeian, Niloufar Dent Res J (Isfahan) Original Article BACKGROUND: Chip-off fracture of veneering porcelain has been described as the most frequent reason for the failure of zirconia-based fixed partial dentures. The purpose of this study was to evaluate the shear bond strength (SBS) of two commercial zirconia core ceramics to their corresponding veneering ceramics. MATERIALS AND METHODS: Zirconia disks with 7-mm diameter and 3-mm height were prepared (Cercon and Biodenta systems) and veneered with recommended layering ceramics (Cercon ceram and 2 in 1 ceramic, respectively) (n = 10). The disks were polished with diamond paste and airborne-particle abraded before layering. The specimens were mounted in a T-shaped metal holder using autopolymerized acrylic resin and stored in 37°C distilled water for one week, after which they were subjected to thermal cycling. SBS of zirconia core to veneering ceramic was measured using a universal testing machine and failure modes were determined microscopically. Data were analyzed using t test (α < 0.05). RESULTS: Mean (±SD) SBS values were 27.19(±3.43) and 28.22(±4.08) MPa for Cercon and Biodenta systems, respectively, with no significant difference. Biodenta system showed more adhesive failure compared to more combined (adhesive and cohesive) failures in Cercon system. CONCLUSION: Within the limitations of this study it can be concluded that SBS of Biodenta and Cercon specimens were nearly the same, but the fracture mode of these two systems were different. Since Biodenta fracture pattern was predominantly adhesive, it seems that maybe Biodenta porcelain was stronger than Cercon porcelain where as its adhesive bond was weaker. Medknow Publications & Media Pvt Ltd 2012 /pmc/articles/PMC3612203/ /pubmed/23559931 Text en Copyright: © Dental Research Journal http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article Rismanchian, Mansour Shafiei, Soufia Askari, Navid Khodaeian, Niloufar Comparison of shear bond strength of two veneering ceramics to zirconia |
title | Comparison of shear bond strength of two veneering ceramics to zirconia |
title_full | Comparison of shear bond strength of two veneering ceramics to zirconia |
title_fullStr | Comparison of shear bond strength of two veneering ceramics to zirconia |
title_full_unstemmed | Comparison of shear bond strength of two veneering ceramics to zirconia |
title_short | Comparison of shear bond strength of two veneering ceramics to zirconia |
title_sort | comparison of shear bond strength of two veneering ceramics to zirconia |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3612203/ https://www.ncbi.nlm.nih.gov/pubmed/23559931 |
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