Effect of sandblasting and enamel deproteinization on shear bond strength of resin-modified glass ionomer
| Autor: | Roland Kmeid, Nadine Hamdane, Elie Khoury, Joseph Ghoubril |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Dental Stress Analysis
Materials science Sodium Hypochlorite Surface Properties Glass ionomer cement Acrylic Resins Orthodontics In Vitro Techniques 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Acid Etching Dental Group (periodic table) Materials Testing Aluminum Oxide Humans Bicuspid Phosphoric Acids Dental Enamel Phosphoric acid Universal testing machine Enamel paint Dental Bonding Resin modified 030206 dentistry Silicon Dioxide Shear bond Resin Cements chemistry visual_art visual_art.visual_art_medium Aluminium oxide Shear Strength 030217 neurology & neurosurgery Nuclear chemistry |
| Zdroj: | International orthodontics. 15(4) |
| ISSN: | 1879-680X |
| Popis: | Summary Introduction The purpose of this study was to compare, in vitro, the shear bond strength of resin-modified glass ionomer (RMGI) bonded to an enamel surface prepared by either sandblasting with 50 μm of aluminium oxide particles, deproteinization with 5.25% NaOCl, or by combining both techniques. Material and methods One hundred and fifty human premolars were cleaned and randomly divided into five groups. In group 1, the teeth were etched using 37% phosphoric acid and bonded with Transbond XT. In group 2, the teeth were etched using 37% phosphoric acid and bonded with Fuji Ortho LC. In group 3, the teeth were deproteinized with 5.25% NaOCl for one minute then etched with 37% phosphoric acid and bonded with Fuji Ortho LC. In group 4, the enamel was sandblasted with 50 μm of aluminium oxide particles for 5 seconds prior to etching and bonding with Fuji Ortho LC. In group 5, the teeth were both sandblasted with 50 μm of aluminium oxide particles for 5 seconds and deproteinized with 5.25% NaOCl for one minute prior to etching using 37% phosphoric acid and bonding with Fuji Ortho LC. The shear bond strength was tested using a universal testing machine with a crosshead speed of 1.0 mm/min. The adhesive remnant index (ARI) index was also determined for each group. Results The mean shear bond strengths were as follows: group 1: 11.33 ± 2.60 MPa, group 2: 8.14 ± 2.09, group 3: 9.57 ± 3.25 MPa, group 4: 9.49 ± 1.99 MPa and group 5: 9.76 ± 2.29 MPa (P = 0.0001). Conclusion The results show that pre-treating the enamel with either sandblasting, NaOCl, or both, could give a significantly higher shear bond strength than using RMGI with acid etch alone. |
| Databáze: | OpenAIRE |
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