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Luting glass ceramic restorations using a selfadhesive resin cement under different dentin conditions

OBJECTIVES: The aim of this study was to investigate the bond strength of ceramic restorations luted using a self-adhesive resin cement (RelyX Unicem, 3M ESPE) under different dentin conditions. MATERIAL AND METHODS: In the experimental groups, ceramic restorations were luted to bovine incisors with...

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Autores principales: GUARDA, Guilherme B., GONÇALVES, Luciano S., CORRER, Américo B., MORAES, Rafael R., SINHORETI, Mário A.C., CORRER-SOBRINHO, Lourenço
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Faculdade de Odontologia de Bauru da Universidade de São Paulo 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5349058/
https://www.ncbi.nlm.nih.gov/pubmed/20857001
http://dx.doi.org/10.1590/S1678-77572010000300008
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author GUARDA, Guilherme B.
GONÇALVES, Luciano S.
CORRER, Américo B.
MORAES, Rafael R.
SINHORETI, Mário A.C.
CORRER-SOBRINHO, Lourenço
author_facet GUARDA, Guilherme B.
GONÇALVES, Luciano S.
CORRER, Américo B.
MORAES, Rafael R.
SINHORETI, Mário A.C.
CORRER-SOBRINHO, Lourenço
author_sort GUARDA, Guilherme B.
collection PubMed
description OBJECTIVES: The aim of this study was to investigate the bond strength of ceramic restorations luted using a self-adhesive resin cement (RelyX Unicem, 3M ESPE) under different dentin conditions. MATERIAL AND METHODS: In the experimental groups, ceramic restorations were luted to bovine incisors with RelyX Unicem under the following conditions: [Dry dentin]: surface was dried using air stream for 15 s; [Moist dentin]: excess dentin moisture was removed with absorbent paper; [Bonding agent]: Clearfil SE Bond (Kuraray) self-etching adhesive system was previously applied to dentin. In the Control group, cementation was done using an etch-and-rinse adhesive (Excite DSC) and Variolink II resin cement (Ivoclar Vivadent). Photoactivation of the resin cements was performed with UltraLume LED 5 unit (Ultradent). The restorations (n=5 per group) were sectioned into beams and microtensile testing was carried out. Data were subjected to ANOVA and Tukey's test (p<0.05). Failure modes were classified under Scanning Electron Microscopic (SEM) (×120 magnification). RESULTS: The bond strength was dependent on the moisture status of the dentin. Bond strength in the "dry dentin group" was significantly lower than that of all other groups, which showed similar results. A predominance of mixed failures was detected for the control group, while a predominance of adhesive failures was observed for the "bonding agent" and "dry dentin" groups. The "moist dentin" group presented predominantly cohesive failures within the luting material. The previous application of a self-etching adhesive showed no significant effect. CONCLUSIONS: Only excess dentin moisture should be removed for the cementation of ceramic restorations with self-adhesive resin cements.
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spelling pubmed-53490582017-03-17 Luting glass ceramic restorations using a selfadhesive resin cement under different dentin conditions GUARDA, Guilherme B. GONÇALVES, Luciano S. CORRER, Américo B. MORAES, Rafael R. SINHORETI, Mário A.C. CORRER-SOBRINHO, Lourenço J Appl Oral Sci Original Articles OBJECTIVES: The aim of this study was to investigate the bond strength of ceramic restorations luted using a self-adhesive resin cement (RelyX Unicem, 3M ESPE) under different dentin conditions. MATERIAL AND METHODS: In the experimental groups, ceramic restorations were luted to bovine incisors with RelyX Unicem under the following conditions: [Dry dentin]: surface was dried using air stream for 15 s; [Moist dentin]: excess dentin moisture was removed with absorbent paper; [Bonding agent]: Clearfil SE Bond (Kuraray) self-etching adhesive system was previously applied to dentin. In the Control group, cementation was done using an etch-and-rinse adhesive (Excite DSC) and Variolink II resin cement (Ivoclar Vivadent). Photoactivation of the resin cements was performed with UltraLume LED 5 unit (Ultradent). The restorations (n=5 per group) were sectioned into beams and microtensile testing was carried out. Data were subjected to ANOVA and Tukey's test (p<0.05). Failure modes were classified under Scanning Electron Microscopic (SEM) (×120 magnification). RESULTS: The bond strength was dependent on the moisture status of the dentin. Bond strength in the "dry dentin group" was significantly lower than that of all other groups, which showed similar results. A predominance of mixed failures was detected for the control group, while a predominance of adhesive failures was observed for the "bonding agent" and "dry dentin" groups. The "moist dentin" group presented predominantly cohesive failures within the luting material. The previous application of a self-etching adhesive showed no significant effect. CONCLUSIONS: Only excess dentin moisture should be removed for the cementation of ceramic restorations with self-adhesive resin cements. Faculdade de Odontologia de Bauru da Universidade de São Paulo 2010 /pmc/articles/PMC5349058/ /pubmed/20857001 http://dx.doi.org/10.1590/S1678-77572010000300008 Text en http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Articles
GUARDA, Guilherme B.
GONÇALVES, Luciano S.
CORRER, Américo B.
MORAES, Rafael R.
SINHORETI, Mário A.C.
CORRER-SOBRINHO, Lourenço
Luting glass ceramic restorations using a selfadhesive resin cement under different dentin conditions
title Luting glass ceramic restorations using a selfadhesive resin cement under different dentin conditions
title_full Luting glass ceramic restorations using a selfadhesive resin cement under different dentin conditions
title_fullStr Luting glass ceramic restorations using a selfadhesive resin cement under different dentin conditions
title_full_unstemmed Luting glass ceramic restorations using a selfadhesive resin cement under different dentin conditions
title_short Luting glass ceramic restorations using a selfadhesive resin cement under different dentin conditions
title_sort luting glass ceramic restorations using a selfadhesive resin cement under different dentin conditions
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5349058/
https://www.ncbi.nlm.nih.gov/pubmed/20857001
http://dx.doi.org/10.1590/S1678-77572010000300008
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