{"title":"Post-etching cleaning influences the resin shear bond strength to CAD/CAM lithium-disilicate ceramics","authors":"Greciana Bruzi, Adriana Oliveira Carvalho, Marcelo Giannini, Hamilton Pires Maia, Pascal Magne","doi":"10.1186/s40563-017-0096-6","DOIUrl":null,"url":null,"abstract":"<p>The hydrofluoric acid (HF) is able to promote selective dissolution of the glassy phase in silica-based ceramic. However, the etching leaves insoluble silica-fluoride salts in the surface that affects negatively the bond, affirming the need of a post-etching cleaning.</p><p>Evaluate the shear bond strength (SBS) of composite resin to CAD/CAM lithium-disilicate ceramics after different post-etching cleaning and silane treatments.</p><p>Twenty-four 2?mm-thick slices of IPS e.max CAD?(Ivoclar Vivadent, AG, Schann,?Liechtenstein) were crystallized, embedded in acrylic resin, polished and cleaned in an ultrasonic bath. Each specimen was etched with 5% HF for 20?s, rinsed for 60?s, and treatment was completed using surface cleaning and silanization. The cleaning methods were: AW—air/water spray; UB—ultrasonic bath; PA—37% phosphoric acid; and ST—steam cleaning. The cleaned surface received: E—no silane treatment; E/S—silane application for 20?s, air drying for 20?s and hot drying (60?°C) for 20?s; E/S+—silane application for 60?s, air drying for 20?s, hot air drying (60?°C) for 20?s, rinsing with boiling water for 15?s and hot air drying for 20?s. Cylinders of composite resin (n?=?12) (Z100, 3M-ESPE, Saint Paul, MN, USA) were bonded using an adhesive resin (Optibond FL adhesive, Kerr?Corp, Orange, CA, USA). SBS testing was carried out after 24?h of storage in water. Samples for each post-etching cleaning regimen were analyzed by SEM.</p><p>According to two-way ANOVA (Bonferroni-corrected post hoc tests, p?<?0.05), the SBS was significantly influenced by the post-etching cleaning, with UB yielding the highest SBS (21?MPa for E/S); other post-etching cleaning regimens showed lower SBS values (12–17?MPa). The type of silane application was not significantly different. The SEM analysis showed a cleaner ceramic surface for UB when compared to the other groups.</p><p>Etching lithium disilicate ceramics following by ultrasonic bath cleaning and regular application of a silane is recommended.</p>","PeriodicalId":464,"journal":{"name":"Applied Adhesion Science","volume":"5 1","pages":""},"PeriodicalIF":1.6800,"publicationDate":"2017-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40563-017-0096-6","citationCount":"15","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Adhesion Science","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1186/s40563-017-0096-6","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Dentistry","Score":null,"Total":0}
引用次数: 15
Abstract
The hydrofluoric acid (HF) is able to promote selective dissolution of the glassy phase in silica-based ceramic. However, the etching leaves insoluble silica-fluoride salts in the surface that affects negatively the bond, affirming the need of a post-etching cleaning.
Evaluate the shear bond strength (SBS) of composite resin to CAD/CAM lithium-disilicate ceramics after different post-etching cleaning and silane treatments.
Twenty-four 2?mm-thick slices of IPS e.max CAD?(Ivoclar Vivadent, AG, Schann,?Liechtenstein) were crystallized, embedded in acrylic resin, polished and cleaned in an ultrasonic bath. Each specimen was etched with 5% HF for 20?s, rinsed for 60?s, and treatment was completed using surface cleaning and silanization. The cleaning methods were: AW—air/water spray; UB—ultrasonic bath; PA—37% phosphoric acid; and ST—steam cleaning. The cleaned surface received: E—no silane treatment; E/S—silane application for 20?s, air drying for 20?s and hot drying (60?°C) for 20?s; E/S+—silane application for 60?s, air drying for 20?s, hot air drying (60?°C) for 20?s, rinsing with boiling water for 15?s and hot air drying for 20?s. Cylinders of composite resin (n?=?12) (Z100, 3M-ESPE, Saint Paul, MN, USA) were bonded using an adhesive resin (Optibond FL adhesive, Kerr?Corp, Orange, CA, USA). SBS testing was carried out after 24?h of storage in water. Samples for each post-etching cleaning regimen were analyzed by SEM.
According to two-way ANOVA (Bonferroni-corrected post hoc tests, p?<?0.05), the SBS was significantly influenced by the post-etching cleaning, with UB yielding the highest SBS (21?MPa for E/S); other post-etching cleaning regimens showed lower SBS values (12–17?MPa). The type of silane application was not significantly different. The SEM analysis showed a cleaner ceramic surface for UB when compared to the other groups.
Etching lithium disilicate ceramics following by ultrasonic bath cleaning and regular application of a silane is recommended.
期刊介绍:
Applied Adhesion Science focuses on practical applications of adhesives, with special emphasis in fields such as oil industry, aerospace and biomedicine. Topics related to the phenomena of adhesion and the application of adhesive materials are welcome, especially in biomedical areas such as adhesive dentistry. Both theoretical and experimental works are considered for publication. Applied Adhesion Science is a peer-reviewed open access journal published under the SpringerOpen brand. The journal''s open access policy offers a fast publication workflow whilst maintaining rigorous peer review process.