Cargando…

Retention Strength of PMMA/UDMA-Based Crowns Bonded to Dentin: Impact of Different Coupling Agents for Pretreatment

Computer aided design/computer aided manufacturing (CAD/CAM) polymers for long-term dental restorations benefit from enhanced mechanical properties. However, the quantification of their bonding properties on teeth is lacking. Therefore, the aim of this study was to determine the retention strength (...

Descripción completa

Detalles Bibliográficos
Autores principales: Stawarczyk, Bogna, Teuss, Simona, Eichberger, Marlis, Roos, Malgorzata, Keul, Christine
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5458920/
https://www.ncbi.nlm.nih.gov/pubmed/28793651
http://dx.doi.org/10.3390/ma8115396
_version_ 1783241855820890112
author Stawarczyk, Bogna
Teuss, Simona
Eichberger, Marlis
Roos, Malgorzata
Keul, Christine
author_facet Stawarczyk, Bogna
Teuss, Simona
Eichberger, Marlis
Roos, Malgorzata
Keul, Christine
author_sort Stawarczyk, Bogna
collection PubMed
description Computer aided design/computer aided manufacturing (CAD/CAM) polymers for long-term dental restorations benefit from enhanced mechanical properties. However, the quantification of their bonding properties on teeth is lacking. Therefore, the aim of this study was to determine the retention strength (RS) of differently pretreated new developed polymethylmethacrylate/urethanedimethacrylate-based CAD/CAM polymer bonded on dentin. In summary, 120 human caries-free molars were prepared, and polymeric crowns were milled and pretreated (n = 20): visio.link (VL), Scotchbond Universal (SU), Monobond Plus/Heliobond (MH), Margin Bond (MB), Margin Bond mixed with acetone (1:1) (MBA) or not pretreated (CG). Half of the specimens were cemented using Variolink II and the other half with RelyX Ultimate. Specimens were stored for 24 h in distilled water and thermal cycled (5000 ×, 5 °C/55 °C). The retention load was measured and failure types were defined. RS was calculated and analyzed using both two- and one-way ANOVA with a post-hoc Scheffé-test, unpaired t-test, Kaplan–Meier with Breslow–Gehan test and chi-squared test (p < 0.05). Crowns bonded using RelyX Ultimate showed higher RS than those bonded using Variolink II. The pretreatment showed no impact on the RS. However, survival analysis within Variolink II found an impact of pretreatment. The median RS for MH was the lowest and statistically different from MB, MBA and CG. For Variolink II MH had the poorest survival as the estimated cumulative failure function of the debonded crown increased very quickly with increasing TBS. Within the RelyX Ultimate groups, no significant differences were determined. The newly developed CAD/CAM polymer showed the highest bonding properties after cementation using RelyX Ultimate.
format Online
Article
Text
id pubmed-5458920
institution National Center for Biotechnology Information
language English
publishDate 2015
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-54589202017-07-28 Retention Strength of PMMA/UDMA-Based Crowns Bonded to Dentin: Impact of Different Coupling Agents for Pretreatment Stawarczyk, Bogna Teuss, Simona Eichberger, Marlis Roos, Malgorzata Keul, Christine Materials (Basel) Article Computer aided design/computer aided manufacturing (CAD/CAM) polymers for long-term dental restorations benefit from enhanced mechanical properties. However, the quantification of their bonding properties on teeth is lacking. Therefore, the aim of this study was to determine the retention strength (RS) of differently pretreated new developed polymethylmethacrylate/urethanedimethacrylate-based CAD/CAM polymer bonded on dentin. In summary, 120 human caries-free molars were prepared, and polymeric crowns were milled and pretreated (n = 20): visio.link (VL), Scotchbond Universal (SU), Monobond Plus/Heliobond (MH), Margin Bond (MB), Margin Bond mixed with acetone (1:1) (MBA) or not pretreated (CG). Half of the specimens were cemented using Variolink II and the other half with RelyX Ultimate. Specimens were stored for 24 h in distilled water and thermal cycled (5000 ×, 5 °C/55 °C). The retention load was measured and failure types were defined. RS was calculated and analyzed using both two- and one-way ANOVA with a post-hoc Scheffé-test, unpaired t-test, Kaplan–Meier with Breslow–Gehan test and chi-squared test (p < 0.05). Crowns bonded using RelyX Ultimate showed higher RS than those bonded using Variolink II. The pretreatment showed no impact on the RS. However, survival analysis within Variolink II found an impact of pretreatment. The median RS for MH was the lowest and statistically different from MB, MBA and CG. For Variolink II MH had the poorest survival as the estimated cumulative failure function of the debonded crown increased very quickly with increasing TBS. Within the RelyX Ultimate groups, no significant differences were determined. The newly developed CAD/CAM polymer showed the highest bonding properties after cementation using RelyX Ultimate. MDPI 2015-11-06 /pmc/articles/PMC5458920/ /pubmed/28793651 http://dx.doi.org/10.3390/ma8115396 Text en © 2015 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Stawarczyk, Bogna
Teuss, Simona
Eichberger, Marlis
Roos, Malgorzata
Keul, Christine
Retention Strength of PMMA/UDMA-Based Crowns Bonded to Dentin: Impact of Different Coupling Agents for Pretreatment
title Retention Strength of PMMA/UDMA-Based Crowns Bonded to Dentin: Impact of Different Coupling Agents for Pretreatment
title_full Retention Strength of PMMA/UDMA-Based Crowns Bonded to Dentin: Impact of Different Coupling Agents for Pretreatment
title_fullStr Retention Strength of PMMA/UDMA-Based Crowns Bonded to Dentin: Impact of Different Coupling Agents for Pretreatment
title_full_unstemmed Retention Strength of PMMA/UDMA-Based Crowns Bonded to Dentin: Impact of Different Coupling Agents for Pretreatment
title_short Retention Strength of PMMA/UDMA-Based Crowns Bonded to Dentin: Impact of Different Coupling Agents for Pretreatment
title_sort retention strength of pmma/udma-based crowns bonded to dentin: impact of different coupling agents for pretreatment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5458920/
https://www.ncbi.nlm.nih.gov/pubmed/28793651
http://dx.doi.org/10.3390/ma8115396
work_keys_str_mv AT stawarczykbogna retentionstrengthofpmmaudmabasedcrownsbondedtodentinimpactofdifferentcouplingagentsforpretreatment
AT teusssimona retentionstrengthofpmmaudmabasedcrownsbondedtodentinimpactofdifferentcouplingagentsforpretreatment
AT eichbergermarlis retentionstrengthofpmmaudmabasedcrownsbondedtodentinimpactofdifferentcouplingagentsforpretreatment
AT roosmalgorzata retentionstrengthofpmmaudmabasedcrownsbondedtodentinimpactofdifferentcouplingagentsforpretreatment
AT keulchristine retentionstrengthofpmmaudmabasedcrownsbondedtodentinimpactofdifferentcouplingagentsforpretreatment