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Nanoleakage for Self-Adhesive Resin Cements used in Bonding CAD/CAD Ceramic Material to Dentin
OBJECTIVES: To determine nanoleakage of CAD/CAM ceramic blocks bonded to dentin with self-adhesive resin cement. METHODS: Eighteen sound extracted human molars were sterilized and sectioned into 3 mm-thick dentin sections. Trilux Cerec Vitablocks (Vita) were also sectioned into 3 mm sections, surfac...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Dental Investigations Society
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3137441/ https://www.ncbi.nlm.nih.gov/pubmed/21769269 |
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author | El-Badrawy, Wafa Hafez, Randa Mohamed El Naga, Abeer Ibrahim Abo Ahmed, Doaa Ragai |
author_facet | El-Badrawy, Wafa Hafez, Randa Mohamed El Naga, Abeer Ibrahim Abo Ahmed, Doaa Ragai |
author_sort | El-Badrawy, Wafa |
collection | PubMed |
description | OBJECTIVES: To determine nanoleakage of CAD/CAM ceramic blocks bonded to dentin with self-adhesive resin cement. METHODS: Eighteen sound extracted human molars were sterilized and sectioned into 3 mm-thick dentin sections. Trilux Cerec Vitablocks (Vita) were also sectioned into 3 mm sections, surface-treated using 5% hydrofluoric acid-etchant, and then coated with silane primer (Vita). Trilux and dentin sections were cemented together by means of three resin cements: Rely-X Unicem (3M/ESPE), BisCem (Bisco), and Calibra (Dentsply), according to manufacturers’ recommendations. Calibra was used in conjunction with Prime/Bond-NT adhesive (Dentsply), while the other two are self-adhesive. The bonded specimens were stored for 24h in distilled water at 37°C. Specimens were vertically sectioned into 1 mm-thick slabs, yielding up to six per specimen. Two central slabs were randomly chosen from each specimen making up the cement groups (n=12). Each group was subdivided into two subgroups (n=6), a control and a thermocycled subgroup (5–55°C) for 500 cycles. Slabs were coated with nail polish up to 1 mm from the interface, immersed in a 50% silver nitrate solution for 24h, and tested for nanoleakage using Quanta Environmental SEM and EDAX. Data were statistically analyzed using two-way ANOVA and Tukey’s post-hoc tests. RESULTS: Rely-X Unicem and Calibra groups demonstrated no significant difference in the percentage of silver penetration, while the BisCem group revealed a significantly higher percentage (P≤.05). Thermocycling (500 cycles) did not have a statistically significant effect on the percentage of silver penetration (P>.05). CONCLUSIONS: One self-adhesive-resin cement demonstrated a similar sealing ability when compared with a standard resin cement. Thermo-cycling did not significantly increase dye penetration under the test conditions. |
format | Online Article Text |
id | pubmed-3137441 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Dental Investigations Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-31374412011-07-18 Nanoleakage for Self-Adhesive Resin Cements used in Bonding CAD/CAD Ceramic Material to Dentin El-Badrawy, Wafa Hafez, Randa Mohamed El Naga, Abeer Ibrahim Abo Ahmed, Doaa Ragai Eur J Dent Original Articles OBJECTIVES: To determine nanoleakage of CAD/CAM ceramic blocks bonded to dentin with self-adhesive resin cement. METHODS: Eighteen sound extracted human molars were sterilized and sectioned into 3 mm-thick dentin sections. Trilux Cerec Vitablocks (Vita) were also sectioned into 3 mm sections, surface-treated using 5% hydrofluoric acid-etchant, and then coated with silane primer (Vita). Trilux and dentin sections were cemented together by means of three resin cements: Rely-X Unicem (3M/ESPE), BisCem (Bisco), and Calibra (Dentsply), according to manufacturers’ recommendations. Calibra was used in conjunction with Prime/Bond-NT adhesive (Dentsply), while the other two are self-adhesive. The bonded specimens were stored for 24h in distilled water at 37°C. Specimens were vertically sectioned into 1 mm-thick slabs, yielding up to six per specimen. Two central slabs were randomly chosen from each specimen making up the cement groups (n=12). Each group was subdivided into two subgroups (n=6), a control and a thermocycled subgroup (5–55°C) for 500 cycles. Slabs were coated with nail polish up to 1 mm from the interface, immersed in a 50% silver nitrate solution for 24h, and tested for nanoleakage using Quanta Environmental SEM and EDAX. Data were statistically analyzed using two-way ANOVA and Tukey’s post-hoc tests. RESULTS: Rely-X Unicem and Calibra groups demonstrated no significant difference in the percentage of silver penetration, while the BisCem group revealed a significantly higher percentage (P≤.05). Thermocycling (500 cycles) did not have a statistically significant effect on the percentage of silver penetration (P>.05). CONCLUSIONS: One self-adhesive-resin cement demonstrated a similar sealing ability when compared with a standard resin cement. Thermo-cycling did not significantly increase dye penetration under the test conditions. Dental Investigations Society 2011-07 /pmc/articles/PMC3137441/ /pubmed/21769269 Text en Copyright 2011 European Journal of Dentistry. All rights reserved. |
spellingShingle | Original Articles El-Badrawy, Wafa Hafez, Randa Mohamed El Naga, Abeer Ibrahim Abo Ahmed, Doaa Ragai Nanoleakage for Self-Adhesive Resin Cements used in Bonding CAD/CAD Ceramic Material to Dentin |
title | Nanoleakage for Self-Adhesive Resin Cements used in Bonding CAD/CAD Ceramic Material to Dentin |
title_full | Nanoleakage for Self-Adhesive Resin Cements used in Bonding CAD/CAD Ceramic Material to Dentin |
title_fullStr | Nanoleakage for Self-Adhesive Resin Cements used in Bonding CAD/CAD Ceramic Material to Dentin |
title_full_unstemmed | Nanoleakage for Self-Adhesive Resin Cements used in Bonding CAD/CAD Ceramic Material to Dentin |
title_short | Nanoleakage for Self-Adhesive Resin Cements used in Bonding CAD/CAD Ceramic Material to Dentin |
title_sort | nanoleakage for self-adhesive resin cements used in bonding cad/cad ceramic material to dentin |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3137441/ https://www.ncbi.nlm.nih.gov/pubmed/21769269 |
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